TI TLV2721

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST1997

D D D D D D D D

DBV PACKAGE (TOP VIEW)

Output Swing Includes Both Supply Rails Low Noise . . . 19 nV/√Hz Typ at f = 1 kHz Low Input Bias Current . . . 1 pA Typ Fully Specified for Single-Supply 3-V and 5-V Operation Very Low Power . . . 110 µA Typ Common-Mode Input Voltage Range Includes Negative Rail Wide Supply Voltage Range 2.7 V to 10 V Macromodel Included

OUT

1

VDD+

2

IN +

3

5

VDD– /GND

4

IN–

description The TLV2721 is a single low-voltage operational amplifier available in the SOT-23 package. It offers a compromise between the ac performance and output drive of the TLV2731 and the micropower TLV2711. It consumes only 150 µA (max) of supply current and is ideal for battery-powered applications. The device exhibits rail-to-rail output performance for increased dynamic range in single- or split-supply applications. The TLV2721 is fully characterized at 3 V and 5 V and is optimized for low-voltage applications. The TLV2721, exhibiting high input impedance and low noise, is excellent for small-signal conditioning for high-impedance sources, such as piezoelectric transducers. Because of the micropower dissipation levels combined with 3-V operation, these devices work well in hand-held monitoring and remote-sensing applications. In addition, the rail-to-rail output feature with single or split supplies makes this family a great choice when interfacing with analog-to-digital converters (ADCs). With a total area of 5.6mm2, the SOT-23 package only requires one third the board space of the standard 8-pin SOIC package. This ultra-small package allows designers to place single amplifiers very close to the signal source, minimizing noise pick-up from long PCB traces. AVAILABLE OPTIONS PACKAGED DEVICES TA

VIOmax AT 25°C

0°C to 70°C

3 mV

TLV2721CDBV

VAKC

– 40°C to 85°C

3 mV

TLV2721IDBV

VAKI

SOT-23 (DBV)†

SYMBOL

CHIP FORM‡ (Y) TLV2721Y

† The DBV package available in tape and reel only. ‡ Chip forms are tested at TA = 25°C only.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Advanced LinCMOS is a trademark of Texas Instruments Incorporated. Copyright  1997, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

POST OFFICE BOX 655303

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1

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST1997

TLV2721Y chip information This chip, when properly assembled, displays characteristics similar to the TLV2721C. Thermal compression or ultrasonic bonding may be used on the doped-aluminum bonding pads. This chip may be mounted with conductive epoxy or a gold-silicon preform. BONDING PAD ASSIGNMENTS

(5)

VDD + (2)

(1) (3)

+

IN + (4)

(1)

OUT

–

IN –

(5) VDD – / GND

CHIP THICKNESS: 10 MILS TYPICAL BONDING PADS: 4 × 4 MILS MINIMUM

46

(2)

TJmax = 150°C TOLERANCES ARE ± 10%. ALL DIMENSIONS ARE IN MILS. PIN (2) IS INTERNALLY CONNECTED TO BACKSIDE OF CHIP.

(4)

(3)

31

2

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

equivalent schematic VDD +

Q3

Q6

Q9

R7

IN +

Q12

Q14

Q16

C2

R6 OUT

IN –

R5 Q1

Q4 Q13

Q15

R2 Q2 R3

Q5

Q7

Q8

Q10

Q11 R1

R4

VDD – / GND COMPONENT COUNT† 23 5 11 2

† Includes both amplifiers and all ESD, bias, and trim circuitry

D1

3

SLOS197 – AUGUST 1997

Transistors Diodes Resistors Capacitors

Q17

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

C1

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 V Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± VDD Input voltage range, VI (any input, see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to VDD Input current, II (each input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 5 mA Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 50 mA Total current into VDD + . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 50 mA Total current out of VDD – . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 50 mA Duration of short-circuit current (at or below) 25°C (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA: TLV2721C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C TLV2721I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: DBV package . . . . . . . . . . . . . . . . . . 260°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values, except differential voltages, are with respect to VDD – . 2. Differential voltages are at the noninverting input with respect to the inverting input. Excessive current flows when input is brought below VDD – – 0.3 V. 3. The output can be shorted to either supply. Temperature and /or supply voltages must be limited to ensure that the maximum dissipation rating is not exceeded. DISSIPATION RATING TABLE PACKAGE

TA ≤ 25°C POWER RATING

DERATING FACTOR ABOVE TA = 25°C

TA = 70°C POWER RATING

TA = 85°C POWER RATING

DBV

150 mW

1.2 mW/°C

96 mW

78 mW

recommended operating conditions TLV2721C Supply voltage, VDD (see Note 1) Input voltage range, VI Operating free-air temperature, TA NOTE 1: All voltage values, except differential voltages, are with respect to VDD – .

4

MAX

MIN

MAX

2.7

10

2.7

10

VDD – VDD –

Common-mode input voltage, VIC

POST OFFICE BOX 655303

TLV2721I

MIN

0

• DALLAS, TEXAS 75265

VDD + – 1.3 VDD + – 1.3 70

VDD – VDD – – 40

VDD + – 1.3 VDD + – 1.3 85

UNIT V V V °C

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

electrical characteristics at specified free-air temperature, VDD = 3 V (unless otherwise noted) PARAMETER VIO

Input offset voltage

αVIO

Temperature coefficient of input offset voltage Input offset voltage long-term drift (see Note 4)

IIO

Input offset current

IIB

Input bias current

VICR

VOH

VOL

AVD

Common-mode input voltage range

High-level Hi hl l output t t voltage

Low-level L l l output t t voltage Large signal Large-signal differential voltage amplification

TA†

TEST CONDITIONS

TLV2721C MIN

Full range

VDD ± = ± 1 1.5 V V, VO = 0,

VIC = 0 0, RS = 50 Ω

MAX

0.5

3

3

mV

0.003

0.003

µV/mo

25°C

0.5

150

1

1 150

0 to 2

Full range g

0 to 1.7

– 0.3 to 2.2

150 0 to 2

– 0.3 to 2.2

2.97

25°C

2.88 15

15

150

150

RL = 2 kه

25°C

2

Full range

1

RL = 1 Mه

V

2.88

25°C

VIC = 1.5 1 5 V, V VO = 1 V to 2 V

V

2.6

25°C

IOL = 500 µA

pA

2.97

2.6

5V VIC = 1 1.5 V,

pA

0 to 1.7

25°C Full range

0.5 150

25°C

IOL = 50 µA

0.5

UNIT

25°C

|VIO| ≤ 5 mV

VIC = 1.5 V,

MAX

µV/°C

25°C

IOH = – 400 µA

TYP

1

Full range

IOH = – 100 µA

MIN

1

Full range

RS = 50 Ω Ω,

TLV2721I

TYP

Full range

500 3

mV 500

2

3

1

V/mV

25°C

250

250

rid

Differential input resistance

25°C

1012

1012

Ω

ric

Common-mode input resistance

25°C

1012

1012

Ω

cic

Common-mode input capacitance

f = 10 kHz

25°C

6

6

pF

zo

Closed-loop output impedance

f = 10 kHz,

25°C

90

90

Ω

CMRR

Common-mode rejection ratio

VIC = 0 to 1.7 V,, VO = 1.5 V, RS = 50 Ω

kSVR

Supply voltage rejection ratio (∆VDD /∆VIO)

VDD = 2.7 V to 8 V,, VIC = VDD /2, No load

IDD

Supply current

VO = 1 1.5 5V V,

AV = 10

No load

25°C

70

Full range

65

25°C

80

Full range

80

82

70

82

dB

65 95

80

95 dB

25°C Full range

80 100

150 200

100

150 200

µA

† Full range for the TLV2721C is 0°C to 70°C. Full range for the TLV2721I is – 40°C to 85°C. ‡ Referenced to 1.5 V NOTE 4: Typical values are based on the input offset voltage shift observed through 500 hours of operating life test at TA = 150°C extrapolated to TA = 25°C using the Arrhenius equation and assuming an activation energy of 0.96 eV.

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5

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

operating characteristics at specified free-air temperature, VDD = 3 V PARAMETER

TA†

TEST CONDITIONS RL = 2 kه,

TLV2721C MIN

TYP

25°C

0.1

0.25

Full range

0.05

TLV2721I MAX

MIN

TYP

0.1

0.25

SR

Slew rate at unity gain

VO = 1.1 1 1 V to 1 1.9 9V V, CL = 100 pF‡

Vn

Equivalent input q noise voltage

f = 10 Hz

25°C

120

120

f = 1 kHz

25°C

20

20

Peak-to-peak equivalent input noise voltage

f = 0.1 Hz to 1 Hz

25°C

680

680

VN(PP)

f = 0.1 Hz to 10 Hz

25°C

860

860

In

Equivalent input noise current

25°C

0.6

0.6

2.52%

2.52%

7.01%

7.01%

0.076%

0.076%

0.147%

0.147%

AV = 1

VO = 1 V to 2 V, f = 20 kHz, kHz RL = 2 k٧

AV = 1

Gain-bandwidth product

f = 1 kHz, CL = 100 pF‡

RL = 2 kه,

BOM

Maximum output-swing bandwidth

VO(PP) = 1 V, RL = 2 kه,

ts

Settling time

φm

Total harmonic distortion plus noise

Phase margin at unity gain

V/µs

0.05

nV/√Hz

fA /√Hz

25°C

AV = 10 25°C

AV = 10 25°C

480

480

kHz

AV = 1, CL = 100 pF‡

25°C

30

30

kHz

AV = –1, Step = 1 V to 2 V,, RL = 2 kΩ‡, CL = 100 pF‡

To 0.1%

25°C

4.5

4.5

µs

To 0.01%

25°C

6.8

6.8

µs

RL = 2 kه,

CL = 100 pF‡

25°C

53°

53°

25°C

12

12

Gain margin † Full range is – 40°C to 85°C. ‡ Referenced to 1.5 V § Referenced to 0 V

6

UNIT

mV

VO = 1 V to 2 V, f = 20 kHz, kHz RL = 2 kه

THD+N

MAX

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

dB

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

electrical characteristics at specified free-air temperature, VDD = 5 V (unless otherwise noted) PARAMETER VIO

Input offset voltage

αVIO

Temperature coefficient of input offset voltage Input offset voltage long-term drift (see Note 4)

IIO

Input offset current

IIB

Input bias current

VICR

Common-mode input voltage range

VOH

High-level g output voltage

VOL

Low-level L l l output t t voltage

AVD

Large signal Large-signal differential voltage amplification

TA†

TEST CONDITIONS

TLV2721C MIN

Full range

VDD ± = ± 2 2.5 V V, VO = 0,

VIC = 0 0, RS = 50 Ω

MAX

0.5

3

VIC = 2.5 2 5 V, V VO = 1 V to 4 V

mV

0.003

µV/mo

25°C

0.5

0.5 150

150

1

1 150

0 to 4

Full range

0 to 3.5

25°C

IOL = 500 µA

3

0.003

|VIO| ≤ 5 mV

5V VIC = 2 2.5 V,

0.5

UNIT

25°C

25°C

IOL = 50 µA

MAX

µV/°C

25°C

VIC = 2.5 V,

TYP

1

Full range

IOH = – 500 µA IOH = – 1 mA

MIN

1

Full range

RS = 50 Ω Ω,

TLV2721I

TYP

– 0.3 to 4.2

150 0 to 4

– 0.3 to 4.2

4.88

4.75

4.88

4.6

4.76

4.6

4.76

25°C

12

12

25°C

120

120

Full range

500 5

pA

V

0 to 3.5

4.75

pA

V

mV 500

RL = 2 kه

25°C

3

3

5

Full range

1

RL = 1 Mه

25°C

800

800

1

V/mV

rid

Differential input resistance

25°C

1012

1012

Ω

ric

Common-mode input resistance

25°C

1012

1012

Ω

cic

Common-mode input capacitance

f = 10 kHz

25°C

6

6

pF

zo

Closed-loop output impedance

f = 10 kHz,

AV = 10

25°C

70

70

Ω

CMRR

Common-mode rejection ratio

VIC = 0 to 2.7 V,, RS = 50 Ω

VO = 1.5 V,,

25°C

70

Full range

65

Supply voltage rejection ratio (∆VDD /∆VIO)

VDD = 4.4 V to 8 V,, VIC = VDD /2, No load

25°C

80

kSVR

Full range

80

IDD

Supply current

VO = 2 2.5 5V V,

No load

85

70

85

dB

65 95

80

95 dB

25°C Full range

80 110

150 200

110

150 200

µA

† Full range for the TLV2721C is 0°C to 70°C. Full range for the TLV2721I is – 40°C to 85°C. ‡ Referenced to 2.5 V NOTE 5: Typical values are based on the input offset voltage shift observed through 500 hours of operating life test at TA = 150°C extrapolated to TA = 25°C using the Arrhenius equation and assuming an activation energy of 0.96 eV.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

7

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

operating characteristics at specified free-air temperature, VDD = 5 V PARAMETER

TA†

TEST CONDITIONS RL = 2 kه,

TLV2721C MIN

TYP

25°C

0.1

0.25

Full range

0.05

TLV2721I MAX

MIN

TYP

0.1

0.25

SR

Slew rate at unity gain

VO = 1.5 1 5 V to 3 3.5 5V V, CL = 100 pF‡

Vn

Equivalent input q noise voltage

f = 10 Hz

25°C

90

90

f = 1 kHz

25°C

19

19

Peak-to-peak equivalent input noise voltage

f = 0.1 Hz to 1 Hz

25°C

800

800

VN(PP)

f = 0.1 Hz to 10 Hz

25°C

960

960

In

Equivalent input noise current

25°C

0.6

0.6

2.45%

2.45%

5.54%

5.54%

0.142%

0.142%

0.257%

0.257%

THD+N

BOM

ts

φm

AV = 1

VO = 1.5 V to 3.5 V, f = 20 kHz, kHz RL = 2 k٧

AV = 1

Gain-bandwidth product

f = 1 kHz, CL = 100 pF‡

RL = 2 kه,

Maximum outputswing bandwidth

VO(PP) = 1 V, RL = 2 kه,

Settling time

Phase margin at unity gain

V/µs

0.05

nV/√Hz

fA /√Hz

25°C

AV = 10 25°C

AV = 10 25°C

510

510

kHz

AV = 1, CL = 100 pF‡

25°C

40

40

kHz

AV = –1, Step = 1.5 V to 3.5 V,, RL = 2 kΩ‡, CL = 100 pF‡

To 0.1%

25°C

6.8

6.8

To 0.01%

25°C

9.2

9.2

RL = 2 kه,

CL = 100 pF‡

25°C

53°

53°

25°C

12

12

µs

Gain margin † Full range is – 40°C to 85°C. ‡ Referenced to 2.5 V § Referenced to 0 V

8

UNIT

mV

VO = 1.5 V to 3.5 V, f = 20 kHz, kHz RL = 2 kه

Total harmonic distortion plus noise

MAX

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

dB

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

electrical characteristics at VDD = 3 V, TA = 25°C (unless otherwise noted) PARAMETER VIO IIO

Input offset voltage

IIB

Input bias current

VICR

TLV2721Y

TEST CONDITIONS VDD ± = ± 1.5 1 5 V, V RS = 50 Ω

VIC = 0, 0

Common-mode input voltage g range g

| VIO| ≤ 5 mV,

RS = 50 Ω

VOH

High-level output voltage

VOL

Low level output voltage Low-level

IOH = – 100 µA VIC = 1.5 V,

AVD

Large-signal g g differential voltage amplification

rid

Differential input resistance

ric

Common-mode input resistance

cic

Common-mode input capacitance

f = 10 kHz

zo

Closed-loop output impedance

f = 10 kHz,

CMRR

Common-mode rejection ratio

kSVR

Supply voltage rejection ratio (∆VDD /∆VIO)

VIC = 0 to 1.7 V, VDD = 2.7 V to 8 V,

Input offset current

VIC = 1.5 V, VO = 1 V to 2 V

IDD Supply current † Referenced to 1.5 V

VO = 0,

MIN VO = 0, 0

IOL = 50 µA IOL = 500 µA

TYP

MAX

620

µV

0.5

pA

1

pA

– 0.3 to 2.2

V

2.97

V

15

mV

150

RL = 2 kن

3

RL = 1 Mن

V/mV

250

AV = 10 VO = 0,

RS = 50 Ω

VIC = 0,

No load

No load

UNIT

1012 1012

Ω

6

pF

Ω

90

Ω

82

dB

95

dB

100

µA

electrical characteristics at VDD = 5 V, TA = 25°C (unless otherwise noted) PARAMETER VIO IIO

Input offset voltage

IIB

Input bias current

VDD ± = ± 1.5 1 5 V, V RS = 50 Ω

Input offset current

VICR

Common-mode input voltage g range g

| VIO| ≤ 5 mV,

VOH

High-level output voltage

IOH = – 500 µA VIC = 2.5 V,

VOL

Low level output voltage Low-level

AVD

Large-signal g g differential voltage amplification

rid

Differential input resistance

ric

Common-mode input resistance

cic

Common-mode input capacitance

f = 10 kHz

zo

Closed-loop output impedance

f = 10 kHz,

CMRR

Common-mode rejection ratio

kSVR

Supply voltage rejection ratio (∆VDD /∆VIO)

VIC = 0 to 1.7 V, VDD = 2.7 V to 8 V,

IDD Supply current † Referenced to 2.5 V

TLV2721Y

TEST CONDITIONS

VIC = 2.5 V, VO = 1 V to 4 V

VO = 0,

POST OFFICE BOX 655303

VIC = 0, 0

MIN VO = 0, 0

RS = 50 Ω

IOL = 50 µA IOL = 500 µA RL = 2 kΩ†

TYP

UNIT

610

µV

0.5

pA

1

pA

– 0.3 to 4.2

V

4.88

V

12 120 5

RL = 1 Mن

MAX

800

mV

V/mV

1012 1012

Ω

6

pF

70

Ω

Ω

AV = 10 VO = 0,

RS = 50 Ω

85

dB

VIC = 0,

No load

95

dB

110

µA

No load

• DALLAS, TEXAS 75265

9

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS Table of Graphs FIGURE VIO

Input offset voltage

Distribution vs Common-mode input voltage

1, 2 3, 4

αVIO

Input offset voltage temperature coefficient

Distribution

5, 6

IIB/IIO

Input bias and input offset currents

vs Free-air temperature

7

VI

Input voltage

vs Supply voltage vs Free-air temperature

8 9

VOH VOL

High-level output voltage

vs High-level output current

10, 13

Low-level output voltage

vs Low-level output current

11, 12, 14

VO(PP)

Maximum peak-to-peak output voltage

vs Frequency

15

IOS

Short-circuit output current

vs Supply voltage vs Free-air temperature

16 17

VO AVD

Output voltage

vs Differential input voltage

Differential voltage amplification

vs Load resistance

AVD

Large signal differential voltage amplification

vs Frequency vs Free-air temperature

21, 22 23, 24

zo

Output impedance

vs Frequency

25, 26

CMRR

Common-mode rejection ratio

vs Frequency vs Free-air temperature

27 28

kSVR

Supply-voltage rejection ratio

vs Frequency vs Free-air temperature

29, 30 31

IDD

Supply current

vs Supply voltage

32

SR

Slew rate

vs Load capacitance vs Free-air temperature

33 34

VO VO

Inverting large-signal pulse response

vs Time

35, 36

Voltage-follower large-signal pulse response

vs Time

37, 38

VO VO

Inverting small-signal pulse response

vs Time

39, 40

Voltage-follower small-signal pulse response

vs Time

41, 42

Vn

Equivalent input noise voltage

vs Frequency

43, 44

Input noise voltage (referred to input)

Over a 10-second period

45

Total harmonic distortion plus noise

vs Frequency

46

Gain-bandwidth product

vs Free-air temperature vs Supply voltage

47 48

Phase margin

vs Frequency vs Load capacitance

21, 22 51, 52

Gain margin

vs Load capacitance

49, 50

Unity-gain bandwidth

vs Load capacitance

53, 54

THD + N

φm

B1

10

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

18, 19 20

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS DISTRIBUTION OF TLV2721 INPUT OFFSET VOLTAGE

DISTRIBUTION OF TLV2721 INPUT OFFSET VOLTAGE 20

16

Precentage of Amplifiers – %

18 Precentage of Amplifiers – %

25

545 Amplifiers From 1 Wafer Lot VDD = ± 1.5 V TA = 25°C

14 12 10 8 6 4

545 Amplifiers From 1 Wafer Lot VDD = ± 2.5 V TA = 25°C

20

15

10

5

2 0

0 –1.5

–1.1

–0.7

–0.3

0.1

0.5

0.9

–1.5

1.3

VIO – Input Offset Voltage – mV

0.1 0.5 0.9 –1.1 –0.7 –0.3 VIO – Input Offset Voltage – mV

Figure 1

Figure 2

INPUT OFFSET VOLTAGE† vs COMMON-MODE INPUT VOLTAGE

INPUT OFFSET VOLTAGE† vs COMMON-MODE INPUT VOLTAGE

1

1

VDD = 3 V RS = 50 Ω TA = 25°C

0.8

VIO – Input Offset Voltage – mV

VIO – Input Offset Voltage – mV

VDD = 5 V RS = 50 Ω TA = 25°C

0.8

0.6 0.4 0.2 0 – 0.2

ÁÁ ÁÁ ÁÁ

1.3

0.6 0.4 0.2 0 – 0.2

ÁÁ ÁÁ

– 0.4 – 0.6 – 0.8

– 0.4 – 0.6 – 0.8

–1 –1

0

1

2

3

VIC – Common-Mode Input Voltage – V

–1 –1

0 1 2 3 4 VIC – Common-Mode Input Voltage – V

Figure 3

5

Figure 4

† For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

11

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS DISTRIBUTION OF TLV2721 INPUT OFFSET VOLTAGE TEMPERATURE COEFFICIENT†

DISTRIBUTION OF TLV2721 INPUT OFFSET VOLTAGE TEMPERATURE COEFFICIENT† 25

32 Amplifiers From 1 Wafer Lot VDD = ± 1.5 V P Package TA = 25°C to 125°C

20

Percentage of Amplifiers – %

Percentage of Amplifiers – %

25

15

10

5

0

–4

–3

–2

–1

0

1

2

20

15

10

5

0

4

3

32 Amplifiers From 1 Wafer Lot VDD = ± 2.5 V P Package TA = 25°C to 125°C

–4

–3

α VIO – Input Offset Voltage Temperature Coefficient – µV/°C

3

4

3 3.5 2 2.5 |VDD ±| – Supply Voltage – V

4

–2

INPUT BIAS AND INPUT OFFSET CURRENTS vs FREE-AIR TEMPERATURE 5 VDD± = ± 2.5 V VIC = 0 VO = 0 RS = 50 Ω

2

RS = 50 Ω TA = 25°C

4 3

70 60 50

ÁÁ ÁÁ

40 30 IIB 20

2 1 0

|VIO| ≤ 5 mV

–1 –2 –3 –4

10 0 25

1

INPUT VOLTAGE vs SUPPLY VOLTAGE

100

80

0

Figure 6

VI – Input Voltage – V

IIIB IB and IIIO IO – Input Bias and Input Offset Currents – pA

Figure 5

90

–1

α VIO – Input Offset Voltage Temperature Coefficient – µV/°C

IIO –5 105 45 65 85 TA – Free-Air Temperature – °C

125

1

Figure 7

1.5

Figure 8

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.

12

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS INPUT VOLTAGE†‡ vs FREE-AIR TEMPERATURE

HIGH-LEVEL OUTPUT VOLTAGE†‡ vs HIGH-LEVEL OUTPUT CURRENT 3

5

VDD = 3 V

VDD = 5 V 2.5 VOH – High-Level Output Voltage – V

4

VI – Input Voltage – V

3

|VIO| ≤ 5 mV

2

ÁÁ

1

0

–1 – 55 – 35 – 15 5 25 45 65 85 105 TA – Free-Air Temperature – °C

125

TA = – 40°C 2 TA = 25°C 1.5 TA = 85°C 1

ÁÁ ÁÁ ÁÁ

TA = 125°C

0.5

0

0

0.5 1 1.5 2 2.5 3 3.5 4 4.5 |IOH| – High-Level Output Current – mA

Figure 9

Figure 10

LOW-LEVEL OUTPUT VOLTAGE‡ vs LOW-LEVEL OUTPUT CURRENT

LOW-LEVEL OUTPUT VOLTAGE†‡ vs LOW-LEVEL OUTPUT CURRENT 1.4

VDD = 3 V TA = 25°C

1

VOL – Low-Level Output Voltage – V

VOL – Low-Level Output Voltage – V

1.2

VIC = 0 0.8

VIC = 1.5 V

VIC = 0.75 V

0.6

0.4

ÁÁ ÁÁ

0.2

0 1

2 3 4 IOL – Low-Level Output Current – mA

5

VDD = 3 V VIC = 1.5 V

1.2 TA = 125°C 1 TA = 85°C 0.8 0.6

ÁÁ ÁÁ ÁÁ 0

5

TA = 25°C

0.4 TA = – 40°C

0.2 0 0

1

2

3

4

5

IOL – Low-Level Output Current – mA

Figure 11

Figure 12

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. ‡ For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

13

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS LOW-LEVEL OUTPUT VOLTAGE†‡ vs LOW-LEVEL OUTPUT CURRENT

HIGH-LEVEL OUTPUT VOLTAGE†‡ vs HIGH-LEVEL OUTPUT CURRENT 1.4

5

ÁÁ ÁÁ

4

TA = – 40°C TA = 25°C

3 TA = 85°C 2 TA = 125°C

ÁÁ ÁÁ

1

0 0

1

2

3

4

5

6

7

VDD = 5 V VIC = 2.5 V

1.2 VOL – Low-Level Output Voltage – V

VOH – High-Level Output Voltage – V

VDD = 5 V VIC = 2.5 V

TA = 125°C 1 TA = 85°C

0.8

0.6 TA = 25°C 0.4 TA = – 40°C 0.2 0 0

8

1

2

|IOH| – High-Level Output Current – mA

Figure 13

5

20

5 VDD = 5 V 4

3 VDD = 3 V 2

1 RL = 2 kΩ TA = 25°C 0 10 2

VO = VDD/2 TA = 25°C VIC = VDD/2

16

VID = – 100 mV

12

8

4

0 VID = 100 mV –4 –8

10 3 10 4 f – Frequency – Hz

10 5

2

Figure 15

3

4 5 6 VDD – Supply Voltage – V

7

Figure 16

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. ‡ For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

14

6

SHORT-CIRCUIT OUTPUT CURRENT vs SUPPLY VOLTAGE

I OS – Short-Circuit Output Current – mA

VO(PP) – Maximum Peak-to-Peak Output Voltage – V

4

Figure 14

MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE‡ vs FREQUENCY

ÁÁ ÁÁ ÁÁ

3

IOL – Low-Level Output Current – mA

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

8

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS SHORT-CIRCUIT OUTPUT CURRENT †‡ vs FREE-AIR TEMPERATURE

OUTPUT VOLTAGE‡ vs DIFFERENTIAL INPUT VOLTAGE 3

VDD = 5 V VIC = 2.5 V VO = 2.5 V

16

12 VID = – 100 mV 8 4

0 VID = 100 mV

2

1.5

1

0.5

–4 –8 – 75

VDD = 3 V RI = 2 kΩ VIC = 1.5 V TA = 25°C

2.5 V O – Output Voltage – V

I OS – Short-Circuit Output Current – mA

20

0 – 50

– 25 0 25 50 75 100 TA – Free-Air Temperature – °C

–5

125

–4

–3 –2 –1 0 1 2 3 VID – Differential Input Voltage – V

Figure 17

DIFFERENTIAL VOLTAGE AMPLIFICATION‡ vs LOAD RESISTANCE AVD – Differential Voltage Amplification – V/mV

V O – Output Voltage – V

4

VDD = 5 V VIC = 2.5 V RL = 2 kΩ TA = 25°C

3

2

1

0

10 3 VO(PP) = 2 V TA = 25°C

–3

–2

–1

0

1

2

3

4

5

VID – Differential Input Voltage – V

VDD = 5 V

10 2

VDD = 3 V

10 1

ÁÁ ÁÁ ÁÁ

1

–5 –4

5

Figure 18

OUTPUT VOLTAGE‡ vs DIFFERENTIAL INPUT VOLTAGE

5

4

1

Figure 19

101

10 2

10 3

RL – Load Resistance – kΩ

Figure 20

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. ‡ For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

15

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS LARGE-SIGNAL DIFFERENTIAL VOLTAGE† AMPLIFICATION AND PHASE MARGIN vs FREQUENCY

ÁÁ ÁÁ

60

180°

VDD = 5 V RL = 2 kΩ CL= 100 pF TA = 25°C

135°

90°

40 Phase Margin

45°

20 Gain 0

0°

φom m – Phase Margin

AVD A VD – Large-Signal Differential Voltage Amplification – dB

80

– 45°

– 20

– 40 104

105 106 f – Frequency – Hz

– 90° 107

Figure 21 LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION AND PHASE MARGIN† vs FREQUENCY

ÁÁ ÁÁ

60

180°

VDD = 3 V RL = 2 kΩ CL= 100 pF TA = 25°C

135°

90°

40 Phase Margin

45°

20

0

Gain

0°

– 45°

– 20

– 40 104

φom m – Phase Margin

AVD A VD – Large-Signal Differential Voltage Amplification – dB

80

105 106 f – Frequency – Hz

– 90° 107

Figure 22 † For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

16

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION†‡ vs FREE-AIR TEMPERATURE

LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION†‡ vs FREE-AIR TEMPERATURE 10 4

VDD = 3 V VIC = 1.5 V VO = 0.5 V to 2.5 V

AVD – Large-Signal Differential Voltage Amplification – V/mV

AVD – Large-Signal Differential Voltage Amplification – V/mV

10 3

RL = 1 MΩ 10 2

10 1 RL = 2 kΩ

1 – 75

– 50

– 25 0 25 50 75 100 TA – Free-Air Temperature – °C

VDD = 5 V VIC = 2.5 V VO = 1 V to 4 V

10 2

10 1

1 – 75

125

RL = 2 kΩ

– 50

– 25 0 25 50 75 100 TA – Free-Air Temperature – °C

Figure 23

OUTPUT IMPEDANCE‡ vs FREQUENCY

1000

1000 VDD = 5 V TA = 25°C

z o – Output Impedance – Ω

z o – Output Impedance – Ω

VDD = 3 V TA = 25°C

100 AV = 100

1 101

125

Figure 24

OUTPUT IMPEDANCE‡ vs FREQUENCY

10

RL = 1 MΩ

10 3

AV = 10

100 AV = 100

10 AV = 10

1

AV = 1

AV = 1 10 2

10 3 f– Frequency – Hz

10 4

10 5

0.1 10 1

Figure 25

10 2

10 3 f– Frequency – Hz

10 4

10 5

Figure 26

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. ‡ For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

17

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS COMMON-MODE REJECTION RATIO†‡ vs FREE-AIR TEMPERATURE

COMMON-MODE REJECTION RATIO† vs FREQUENCY 88 CMMR – Common-Mode Rejection Ratio – dB

CMRR – Common-Mode Rejection Ratio – dB

100 TA = 25°C

VDD = 5 V VIC = 2.5 V 80

VDD = 3 V 60 VIC = 1.5 V

40

20

0 10 1

10 2

10 4 10 3 f – Frequency – Hz

10 5

VDD = 5 V 86

84

80

78 – 75

10 6

VDD = 3 V

82

– 50

– 25 0 25 50 75 100 TA – Free-Air Temperature – °C

Figure 27

Figure 28

SUPPLY-VOLTAGE REJECTION RATIO† vs FREQUENCY

SUPPLY-VOLTAGE REJECTION RATIO† vs FREQUENCY 100

VDD = 3 V TA = 25°C

k SVR – Supply-Voltage Rejection Ratio – dB

k SVR – Supply-Voltage Rejection Ratio – dB

100

80 kSVR +

60 kSVR –

40

20

ÁÁ ÁÁ ÁÁ

0

– 20 10 1

10 2

10 3 10 4 f – Frequency – Hz

10 5

10 6

ÁÁ ÁÁ ÁÁ

VDD = 5 V TA = 25°C 80 kSVR + 60 kSVR – 40

20

0

– 20 101

Figure 29

10 2

10 3

10 4

10 5

f – Frequency – Hz

Figure 30

† For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V. ‡ Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.

18

125

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

10 6

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS SUPPLY CURRENT † vs SUPPLY VOLTAGE

SUPPLY-VOLTAGE REJECTION RATIO† vs FREE-AIR TEMPERATURE 200 VDD = 2.7 V to 8 V VIC = VO = VDD / 2 98

96

150 TA = – 40°C 125 100

TA = 85°C

ÁÁ ÁÁ ÁÁ

94

ÁÁ ÁÁ ÁÁ

VO = 0 No Load

175 I DD – Supply Current – µ A

k SVR – Supply-Voltage Rejection Ratio – dB

100

92

TA = 25°C

75 50 25

90 – 75

0 – 50

– 25 0 25 50 75 TA – Free-Air Temperature – °C

100

0

125

2

Figure 31

10

0.5

VDD = 5 V AV = – 1 TA = 25°C

0.4 SR – Slew Rate – V/ µ s

SR – Slew Rate – V/ µ s

8

SLEW RATE†‡ vs FREE-AIR TEMPERATURE

0.4

0.3 SR – 0.2 SR + 0.1

0 101

6

Figure 32

SLEW RATE‡ vs LOAD CAPACITANCE 0.5

4

VDD – Supply Voltage – V

VDD = 5 V RL = 2 kΩ CL = 100 pF AV = 1

SR –

0.3

0.2 SR + 0.1

102 103 104 CL – Load Capacitance – pF

105

0 – 75

– 50

– 25

0

25

50

75

100

125

TA – Free-Air Temperature – °C

Figure 33

Figure 34

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. ‡ For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

19

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS INVERTING LARGE-SIGNAL PULSE RESPONSE†

INVERTING LARGE-SIGNAL PULSE RESPONSE† 5

3 VDD = 3 V RL = 2 kΩ CL = 100 pF AV = –1 TA = 25°C

4 VO – Output Voltage – V

VO – Output Voltage – V

2.5

VDD = 5 V RL = 2 kΩ CL = 100 pF AV = – 1 TA = 25°C

2

1.5

1

3

2

1

0.5

0

0 0

5

10

15

20 25 30 t – Time – µs

35

40

45

0

50

5

10

15

30

35

40

45 50

Figure 36

VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE†

VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE† 5

5

VDD = 5 V RL = 2 kΩ CL = 100 pF AV = 1 TA = 25°C

VDD = 5 V CL = 100 pF AV = 1 TA = 25°C

4 VO – Output Voltage – V

4 VO – Output Voltage – V

25

t – Time – µs

Figure 35

3

2

RL = 100 kΩ Tied to 2.5 V

3

2

RL = 2 kΩ Tied to 2.5 V

1

1

0

20

RL = 2 kΩ Tied to 0 V

0 0

5

10

15

20

25

30

35

40

45

50

0

5

t – Time – µs

10

15

20

25

30

35

40

45

t – Time – µs

Figure 37

Figure 38

† For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

20

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

50

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS INVERTING SMALL-SIGNAL PULSE RESPONSE†

INVERTING SMALL-SIGNAL PULSE RESPONSE†

0.82

2.58 VDD = 3 V RL = 2 kΩ CL = 100 pF AV = – 1 TA = 25°C

2.56 VO VO – Output Voltage – V

VO – Output Voltage – V

0.8

VDD = 5 V RL = 2 kΩ CL = 100 pF AV = – 1 TA = 25°C

0.78

0.76

0.74

0.72

2.54 2.52 2.5 2.48

2.46

0.7 0

2.44 0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0

0.5

1

1.5

VOLTAGE-FOLLOWER SMALL-SIGNAL PULSE RESPONSE†

3

3.5

4

4.5

5

VOLTAGE-FOLLOWER SMALL-SIGNAL PULSE RESPONSE†

0.82

2.58

VDD = 3 V RL = 2 kΩ CL = 100 pF AV = 1 TA = 25°C

VDD = 5 V RL = 2 kΩ CL = 100 pF AV = 1 TA = 25°C

2.56

VO VO – Output Voltage – V

VO VO – Output Voltage – V

2.5

Figure 40

Figure 39

0.8

2

t – Time – µs

t – Time – µs

0.78

0.76

0.74

2.54 2.52 2.5 2.48

0.72 2.46 0.7 0

1

2

3

4

5

6

7

8

9

10

t – Time – µs

2.44 0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

t – Time – µs

Figure 41

Figure 42

† For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

21

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS EQUIVALENT INPUT NOISE VOLTAGE† vs FREQUENCY

EQUIVALENT INPUT NOISE VOLTAGE† vs FREQUENCY 120 V n – Equivalent Input Noise Voltage – nV/ Hz

V n – Equivalent Input Noise Voltage – nV/ Hz

120 VDD = 3 V RS = 20 Ω TA = 25°C

100

80

60

40

20

0 10 1

10 2

10 3

VDD = 5 V RS = 20 Ω TA = 25°C

100

80

60

40

20

0 101

10 4

10 2

Figure 43

Figure 44 TOTAL HARMONIC DISTORTION PLUS NOISE† vs FREQUENCY

Input Noise Voltage – nV

THD + N – Total Harmonic Distortion Plus Noise – %

INPUT NOISE VOLTAGE OVER A 10-SECOND PERIOD† VDD = 5 V f = 0.1 Hz to 10 Hz TA = 25°C

750 500 250 0 – 250 – 500 – 750 – 1000

0

2

4 6 t – Time – s

10 4

f – Frequency – Hz

f – Frequency – Hz

1000

10 3

8

10

10 VDD = 5 V TA = 25°C RL = 2 kΩ Tied to 2.5 V RL = 2 kΩ Tied to 0 V

AV = 10

AV = 1

1

0.1 AV = 10 AV = 1 0.01 101

10 2

10 3

10 4

f – Frequency – Hz

Figure 46

Figure 45

† For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

22

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

10 5

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS GAIN-BANDWIDTH PRODUCT †‡ vs FREE-AIR TEMPERATURE

GAIN-BANDWIDTH PRODUCT vs SUPPLY VOLTAGE 600

VDD = 5 V f = 10 kHz RL = 2 kHz CL = 100 pF

700

RL = 2k CL = 100 pF TA = 25°C

575 Gain-Bandwidth Product – kHz

Gain-Bandwidth Product – kHz

800

600

500

400

300

550 525 500 475 450 425

200 – 75

– 50

– 25 0 25 50 75 100 TA – Free-Air Temperature – °C

400

125

0

1

2 3 4 5 6 VDD – Supply Voltage – V

Figure 47

7

8

Figure 48

GAIN MARGIN vs LOAD CAPACITANCE

GAIN MARGIN vs LOAD CAPACITANCE

20

20 Rnull = 1 kΩ Rnull = 500 Ω

Rnull = 1 kΩ 15 Gain Margin – dB

Gain Margin – dB

15

Rnull = 500 Ω

10

Rnull = 0

Rnull = 200 Ω

5

Rnull = 100 Ω 10 Rnull = 0 5 TA = 25°C RL = 2 kΩ

TA = 25°C RL = ∞

0 101

10 2 10 3 CL – Load Capacitance – pF

10 4

0 101

Figure 49

10 2 10 3 CL – Load Capacitance – pF

10 4

Figure 50

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. ‡ For all curves where VDD = 5 V, all loads are referenced to 2.5 V. For all curves where VDD = 3 V, all loads are referenced to 1.5 V.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

23

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

TYPICAL CHARACTERISTICS PHASE MARGIN vs LOAD CAPACITANCE

PHASE MARGIN vs LOAD CAPACITANCE

75°

75° TA = 25°C RL = ∞

TA = 25°C RL = 2 kΩ Rnull = 500 Ω

Rnull = 1 kΩ

60° φom m – Phase Margin

φom m – Phase Margin

60°

45°

30°

Rnull = 1 kΩ

45° Rnull = 500 Ω 30°

Rnull = 0

Rnull = 0

Rnull = 200 Ω

15°

15° Rnull = 100 Ω

0° 101

10 2 10 3 10 4 CL – Load Capacitance – pF

0° 101

10 5

10 2 10 3 10 4 CL – Load Capacitance – pF

Figure 51

Figure 52

UNITY-GAIN BANDWIDTH vs LOAD CAPACITANCE

UNITY-GAIN BANDWIDTH vs LOAD CAPACITANCE

600

600 TA = 25°C RL = 2 kΩ

500

B1 – Unity-Gain Bandwidth – kHz

B1 – Unity-Gain Bandwidth – kHz

TA = 25°C RL = ∞

ÁÁ ÁÁ

400

300

200

100

0 101

10 2 10 3 10 4 CL – Load Capacitance – pF

10 5

500

400

300

ÁÁ ÁÁ ÁÁ

200

100

0 101

Figure 53

24

10 5

10 2 10 3 10 4 CL – Load Capacitance – pF

Figure 54

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

10 5

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

APPLICATION INFORMATION driving large capacitive loads The TLV2721 is designed to drive larger capacitive loads than most CMOS operational amplifiers. Figure 50 through Figure 55 illustrate its ability to drive loads greater than 100 pF while maintaining good gain and phase margins (Rnull = 0). A small series resistor (Rnull) at the output of the device (Figure 55) improves the gain and phase margins when driving large capacitive loads. Figure 50 through Figure 53 show the effects of adding series resistances of 100 Ω, 200 Ω, 500 Ω, and 1 kΩ. The addition of this series resistor has two effects: the first effect is that it adds a zero to the transfer function and the second effect is that it reduces the frequency of the pole associated with the output load in the transfer function. The zero introduced to the transfer function is equal to the series resistance times the load capacitance. To calculate the approximate improvement in phase margin, equation 1 can be used.

ǒ

Ǔ

+ tan–1 2 × π × UGBW × Rnull × CL where : ∆φ m1 + improvement in phase margin UGBW + unity-gain bandwidth frequency R null + output series resistance C L + load capacitance ∆φ m1

(1)

The unity-gain bandwidth (UGBW) frequency decreases as the capacitive load increases (Figure 54 and Figure 55). To use equation 1, UGBW must be approximated from Figure 54 and Figure 55.

VDD + VI

Rnull

– + VDD – / GND

RL

CL

Figure 55. Series-Resistance Circuit The TLV2721 is designed to provide better sinking and sourcing output currents than earlier CMOS rail-to-rail output devices. This device is specified to sink 500 µA and source 1 mA at VDD = 5 V at a maximum quiescent IDD of 200 µA. This provides a greater than 80% power efficiency. When driving heavy dc loads, such as 2 kΩ, the positive edge under slewing conditions can experience some distortion. This condition can be seen in Figure 38. This condition is affected by three factors:

D D D

Where the load is referenced. When the load is referenced to either rail, this condition does not occur. The distortion occurs only when the output signal swings through the point where the load is referenced. Figure 39 illustrates two 2-kΩ load conditions. The first load condition shows the distortion seen for a 2-kΩ load tied to 2.5 V. The third load condition in Figure 39 shows no distortion for a 2-kΩ load tied to 0 V. Load resistance. As the load resistance increases, the distortion seen on the output decreases. Figure 39 illustrates the difference seen on the output for a 2-kΩ load and a 100-kΩ load with both tied to 2.5 V. Input signal edge rate. Faster input edge rates for a step input result in more distortion than with slower input edge rates.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

25

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

APPLICATION INFORMATION macromodel information Macromodel information provided was derived using Microsim Parts , the model generation software used with Microsim PSpice . The Boyle macromodel (see Note 6) and subcircuit in Figure 57 are generated using the TLV2721 typical electrical and operating characteristics at TA = 25°C. Using this information, output simulations of the following key parameters can be generated to a tolerance of 20% (in most cases):

D D D D D D

D D D D D D

Maximum positive output voltage swing Maximum negative output voltage swing Slew rate Quiescent power dissipation Input bias current Open-loop voltage amplification

Unity-gain frequency Common-mode rejection ratio Phase margin DC output resistance AC output resistance Short-circuit output current limit

NOTE 6: G. R. Boyle, B. M. Cohn, D. O. Pederson, and J. E. Solomon, “Macromodeling of Integrated Circuit Operational Amplifiers”, IEEE Journal of Solid-State Circuits, SC-9, 353 (1974). 99 3

VDD +

9 RSS 10 J1

DP

VC J2

IN + 11 RD1 VAD

DC

12 C1

R2 – 53

HLIM

–

+

C2

6

–

–

+

+ GCM

GA

–

RD2

–

RO1

DE

5

+ VE

.SUBCKT TLV2721 1 2 3 4 5 C1 11 12 12.53E–12 C2 6 7 50.00E–12 DC 5 53 DX DE 54 5 DX DLP 90 91 DX DLN 92 90 DX DP 4 3 DX EGND 99 0 POLY (2) (3,0) (4,0) 0 .5 .5 FB 7 99 POLY (5) VB VC VE VLP + VLN 0 893.6E3 –90E3 90E3 90E3 –90E3 GA 6 0 11 12 94.25E–6 GCM 0 6 10 99 9.300E–9 ISS 3 10 DC 9.000E–6 HLIM 90 0 VLIM 1K J1 11 2 10 JX J2 12 1 10 JX R2 6 9 100.0E3

OUT RD1 60 11 10.61E3 RD2 60 12 10.61E3 R01 8 5 35 R02 7 99 35 RP 3 4 49.50E3 RSS 10 99 22.22E6 VAD 60 4 –.5 VB 9 0 DC 0 VC 3 53 DC .666 VE 54 4 DC .666 VLIM 7 8 DC 0 VLP 91 0 DC 3.4 VLN 0 92 DC 11.4 .MODEL DX D (IS=800.0E–18) .MODEL JX PJF (IS=500.0E–15 BETA=1.527E–3 + VTO=–.001) .ENDS

Figure 56. Boyle Macromodel and Subcircuit

PSpice and Parts are trademark of MicroSim Corporation. Macromodels, simulation models, or other models provided by TI, directly or indirectly, are not warranted by TI as fully representing all of the specification and operating characteristics of the semiconductor product to which the model relates.

26

–

VLIM 8

54 4

91 + VLP

7

60

+ –

+ DLP

90

RO2

VB

IN –

VDD –

92

FB

–

+

ISS

RP 2

1

DLN

EGND +

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

VLN

TLV2721, TLV2721Y Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER SINGLE OPERATIONAL AMPLIFIERS SLOS197 – AUGUST 1997

MECHANICAL INFORMATION DBV (R-PDSO-G5)

PLASTIC SMALL-OUTLINE PACKAGE 0,40 0,20

0,95 5

0,25 M

4

1,80 1,50

0,15 NOM

3,00 2,50

3

1

Gage Plane

3,10 2,70 0,25 0°– 8°

0,55 0,35

Seating Plane 1,30 1,00

0,10

0,05 MIN

4073253-4/A 12/96 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions include mold flash or protrusion.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

27

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