TEXAS INSTRUMENTS TLV2731, TLV2731Y Technical data

T

VIOmax AT 25°C

SYMBOL

FORM

‡

TLV2731Y

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

D

Output Swing Includes Both Supply Rails

D

Low Noise . . . 15 nV/√Hz Typ at f = 1 kHz

D

Low Input Bias Current ...1 pA Typ

D

Fully Specified for Single-Supply 3-V and
5-V Operation

D

Common-Mode Input Voltage Range
Includes Negative Rail

D

High Gain Bandwidth ...2 MHz at
V

= 5 V with 600 Ω Load

DD

D

High Slew Rate . . . 1.6 V/µs at VDD = 5 V

D

Wide Supply Voltage Range

DBV PACKAGE

(TOP VIEW)

OUT V

V

DD+

IN+

1

5

2

43

IN–

DD–

/GND

2.7 V to 10 V

D

Macromodel Included

description

The TL V2731 is a single low-voltage operational amplifier available in the SOT-23 package. It offers 2 MHz of
bandwidth and 1.6 V/µs of slew rate for applications requiring good ac performance. The device exhibits
rail-to-rail output performance for increased dynamic range in single or split supply applications. The TL V2731
is fully characterized at 3 V and 5 V and is optimized for low-voltage applications.

The TLV2731, exhibiting high input impedance and low noise, is excellent for small-signal conditioning of
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). The device can also drive 600-Ω loads for
telecom applications.

With a total area of 5.6mm
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.

2

, the SOT-23 package only requires one-third the board space of the standard 8-pin

A

0°C to 70°C 3 mV TLV2731CDBV VALC

–40°C to 85°C 3 mV TLV2731IDBV VALI

†

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.

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.

AVAILABLE OPTIONS

PACKAGED DEVICES

°

SOT-23 (DBV)

CHIP

†

Copyright  2001, Texas Instruments Incorporated

(Y)

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

1

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TLV2731Y chip information

This chip, when properly assembled, displays characteristics similar to the TL V2731C. 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

46

(5)

(2)

(1)

V

DD+

V

+

–

DD–

(2)

(5)
/GND

(1)

OUT

(3)

IN+

(4)

IN–

CHIP THICKNESS: 10 MILS TYPICAL
BONDING PADS: 4 × 4 MILS MINIMUM
TJmax = 150°C
TOLERANCES ARE ±10%.
ALL DIMENSIONS ARE IN MILS.
PIN (2) IS INTERNALLY CONNECTED

TO BACKSIDE OF CHIP.

(4)

31

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

(3)

equivalent schematic

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

V

DD+

Q3 Q6 Q9 Q12 Q14 Q16

IN+

IN–

R7

Q4Q1

Q2 Q5 Q7 Q8 Q10 Q11

R3

R4

COMPONENT COUNT

Transistors
Diodes
Resistors
Capacitors

†

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

C2

R6

R5

V

†

23
5
11
2

C1

DD–/GND

R1

R2

OUT

Q17Q15Q13

D1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

TLV2731, TLV2731Y

PACKAGE

A

UNIT

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage, V
Differential input voltage, V
Input voltage range, V
Input current, I
Output current, I
Total current into V
Total current out of V

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, T
Storage temperature range, T

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 V

2. Differential voltages are at the noninverting input with respect to the inverting input. Excessive current flows when input is brought
below V

3. The output may be shorted to either supply. Temperature and /or supply voltages must be limited to ensure that the maximum

DD–

dissipation rating is not exceeded.

DBV 150 mW 1.2 mW/°C 96 mW 78 mW

(see Note 1) 12 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DD

I

(each input) ±5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

DD+

DD–

(see Note 2) ±V

ID

(any input, see Note 1) –0.3 V to V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

: TLV2731C 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A

TLV2731I –40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

.

DD –

– 0.3 V.

DISSIPATION RATING TABLE

T

≤ 25°C DERATING FACTOR T

POWER RATING ABOVE TA = 25°CAPOWER RATINGAPOWER RATING

= 70°C T

= 85°C

†

DD
DD

recommended operating conditions

Supply voltage, VDD(see Note 1)
Input voltage range, V
Common-mode input voltage, V
Operating free-air temperature, T

NOTE 1: All voltage values, except differential voltages, are with respect to V

I

IC

A

DD –

TLV2731C TLV2731I

MIN MAX MIN MAX

2.7 10 2.7 10 V

V

DD–VDD+

V

DD–VDD+

0 70 –40 85 °C

.

–1.3 V
–1.3 V

DD–VDD+
DD–VDD+

–1.3 V
–1.3 V

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PARAMETER

TEST CONDITIONS

T

†

UNIT

fficient of i

t

0.5

0.5µV/°C

V

V

V
IIOInput offset current

pA

IIBInput bias current

pA

3

3

25 C

0 to 2

to 2.2

0 to 2

to 2.2

V

R

50 Ω

|VIO| ≤5 mV

V

voltage range

0 to

0 to

Full range

1.7

1.7

voltage

I

2 mA

voltage

V

1.5 V

I

500 µA

Large signal

R

600 Ω

‡

VD

V

O

V

CMRR

IC

,

dB

k

DD

,

dB

IDDSupply current

V

1.5 V

No load

A

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

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

TLV2731C TLV2731I

MIN TYP MAX MIN TYP MAX

0.7 3 0.7 3 mV

0.003 0.003 µV/mo

–0.

0 to 2

–0.

p

p

V

α

Input offset voltage

IO

Temperature
coe

VIO

offset voltage
Input offset voltage

long-term drift
(see Note 4)

p

p

Common-mode input

ICR

voltage range

p

npu

DD±

VO = 0,

=

S

= ±1.5

,

,

IC

RS = 50 Ω

= 0,

A

Full range

25°C

25°C 0.5 60 0.5 60

Full range 150 150

25°C 1 60 1 60

Full range 150 150

25°C 0 to 2

Full range

V

V

A

r

r

c

z

†
‡

NOTE 4: T ypical values are based on the input of fset voltage shift observed through 500 hours of operating life test at TA = 150°C extrapolated

High-level output

OH

Low-level output

OL

-

differential voltage

VD

amplification
Differential input

id

resistance
Common-mode input

ic

resistance
Common-mode input

ic

capacitance
Closed-loop output

o

impedance
Common-mode V

rejection ratio
Supply voltage

rejection ratio

SVR

(∆VDD /∆VIO)

pp

Full range for the TLV2731C is 0°C to 70°C. Full range for the TLV2731I is – 40°C to 85°C.
Referenced to 1.5 V

to TA = 25°C using the Arrhenius equation and assuming an activation energy of 0.96 eV .

IOH = –1 mA 25°C 2.87 2.87

= –

OH

VIC = 1.5 V, IOL = 50 µA 25°C 10 10

,

=

IC

VIC = 1.5 V,

= 1 V to 2

f = 10 kHz 25°C 6 6 pF

f = 1 MHz, AV = 1 25°C 156 156

= 0 to 1.7 V,

VO = 1.5 V, RS = 50 Ω

V

= 2.7 V to 8 V,

VIC = VDD/2, No load

,

=

O

=

OL

=

L

RL = 1 MΩ

25°C 2.74 2.74

Full range 2.3 2.3

25°C 100 100

Full range 300 300

25°C 1 1.6 1 1.6

Full range 0.3 0.3

‡

25°C 250 250
25°C 10

25°C 10

25°C 60 70 60 70

Full range 55 55

25°C 70 96 70 96

Full range 70 70

25°C 750 1200 750 1200

Full range 1500 1500

12

12

10

10

mV

V/mV

12

12

µ

V

Ω

Ω

Ω

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

5

TLV2731, TLV2731Y

PARAMETER

TEST CONDITIONS

T

†

UNIT

Slew rate at unity
V

q
V/√H

V

t

V

f

25°C

noise

V

O

§

tsSettling time

,

25°C

s

‡

L,L

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

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

TLV2731C TLV2731I

MIN TYP MAX MIN TYP MAX

0.75 1.25 0.75 1.25

0.5 0.5

0.285% 0.285%

7.2% 7.2%

0.098% 0.098%

0.9 0.9

1.5 1.5

SR

n

N(PP)

I

n

THD+N

B

OM

φ

m

†

Full range is –40°C to 85°C.

‡

Referenced to 1.5 V

§

Referenced to 0 V

gain

Equivalent input
noise voltage

Peak-to-peak
equivalent inpu
noise voltage

Equivalent input
noise current

Total harmonic
distortion plus

Gain-bandwidth
product

Maximum output­swing bandwidth

Phase margin at
unity gain

Gain margin

p

A

VO = 1.1 V to 1.9 V,
CL = 100 pF

f = 10 Hz 25°C 105 105
f = 1 kHz

f = 0.1 Hz to 1 Hz 25°C 1.4 1.4
f = 0.1 Hz to 10 Hz

VO = 1 V to 2 V,

= 20 kHz,

RL = 600 Ω

=

= 1 V to 2 V,
f = 20 kHz,
RL = 600 Ω

f = 10 kHz,
CL = 100 pF

V

O(PP)

RL = 600 Ω‡,
AV = –1,

Step = 1 V to 2 V,
RL = 600 Ω‡,
CL = 100 pF

R

= 600 Ω‡, C

‡

‡

‡

= 1 V,

‡

RL = 600 Ω‡,

AV = 1
AV = 10

AV = 1 0.014% 0.014%
AV = 10
AV = 100 0.13% 0.13%
RL = 600 Ω‡,

AV = 1,
CL = 100 pF

To 0.1%

To 0.01%

= 100 pF

25°C

Full

range

25°C 16 16

25°C 1.5 1.5

25°C 0.6 0.6

25°C

25°C 1.9 1.9 MHz

25°C 60 60 kHz

‡

°

25°C 50° 50°
25°C 8 8 dB

V/µs

n

µ

fA/√Hz

µ

z

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PARAMETER

TEST CONDITIONS

T

†

UNIT

fficient of i

t

0.5

0.5µV/°C

V

V

V
IIOInput offset current

pA

IIBInput bias current

pA

3

3

25 C

0 to 4

to 4.2

0 to 4

to 4.2

V

R

50 Ω

|VIO| ≤5 mV

V

voltage range

0 to

0 to

Full range

3.7

3.7

voltage

I

4 mA

voltage

V

2.5 V

I

1 mA

Large signal

R

600 Ω

‡

VD

V

O

V

CMRR

IC

,

dB

k

DD

,

dB

IDDSupply current

V

2.5 V

No load

A

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

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

TLV2731C TLV2731I

MIN TYP MAX MIN TYP MAX

0.7 3 0.7 3 mV

0.003 0.003 µV/mo

–0.

0 to 4

–0.

p

p

V

α

Input offset voltage

IO

Temperature
coe

VIO

offset voltage
Input offset voltage

long-term drift
(see Note 4)

p

p

Common-mode input

ICR

voltage range

p

npu

DD±

VO = 0,

=

S

= ±2.5

,

,

IC

RS = 50 Ω

= 0,

A

Full range

25°C

25°C 0.5 60 0.5 60

Full range 150 150

25°C 1 60 1 60

Full range 150 150

25°C 0 to 4

Full range

V

V

A

r

r

c

z

†
‡

NOTE 5: T ypical values are based on the input of fset voltage shift observed through 500 hours of operating life test at TA = 150°C extrapolated

High-level output

OH

Low-level output

OL

-

differential voltage

VD

amplification
Differential input

id

resistance
Common-mode input

ic

resistance
Common-mode input

ic

capacitance
Closed-loop output

o

impedance
Common-mode V

rejection ratio
Supply voltage

rejection ratio

SVR

(∆VDD /∆VIO)

pp

Full range for the TLV2731C is 0°C to 70°C. Full range for the TLV2731I is – 40°C to 85°C.
Referenced to 2.5 V

to TA = 25°C using the Arrhenius equation and assuming an activation energy of 0.96 eV .

IOH = –1 mA 25°C 4.9 4.9

= –

OH

VIC = 2.5 V, IOL = 500 µA 25°C 80 80

,

=

IC

VIC = 2.5 V,

= 1 V to 4

f = 10 kHz 25°C 6 6 pF

f = 1 MHz, AV = 1 25°C 138 138

= 0 to 2.7 V,

VO = 2.5 V, RS = 50 Ω

V

= 4.4 V to 8 V,

VIC = VDD/2, No load

,

=

O

=

OL

=

L

RL = 1 MΩ

25°C 4.6 4.6

Full range 4.3 4.3

25°C 160 160

Full range 500 500

25°C 1 1.5 1 1.5

Full range 0.3 0.3

‡

25°C 400 400
25°C 10

25°C 10

25°C 60 70 60 70

Full range 55 55

25°C 70 96 70 96

Full range 70 70

25°C 850 1300 850 1300

Full range 1600 1600

12

12

10

10

mV

V/mV

12

12

µ

V

Ω

Ω

Ω

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

7

TLV2731, TLV2731Y

PARAMETER

TEST CONDITIONS

T

†

UNIT

Slew rate at unity

V

1.5 V to 3.5 V

R

600 Ω

‡

V

q
V/√H

V

t

V

f

25°C

noise

V

O

§

tsSettling time

,

25°C

s

‡

L,L

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

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

TLV2731C TLV2731I

MIN TYP MAX MIN TYP MAX

1 1.6 1 1.6

0.7 0.7

0.409% 0.409%

3.68% 3.68%

0.045% 0.045%

0.95 0.95

2.4 2.4

SR

n

N(PP)

I

n

THD+N

B

OM

φ

m

†

Full range is –40°C to 85°C.

‡

Referenced to 2.5 V

§

Referenced to 0 V

gain

Equivalent input
noise voltage

Peak-to-peak
equivalent inpu
noise voltage

Equivalent input
noise current

Total harmonic
distortion plus

Gain-bandwidth
product

Maximum
output-swing
bandwidth

Phase margin at
unity gain

Gain margin

p

A

=

O

CL = 100 pF

f = 10 Hz 25°C 100 100
f = 1 kHz

f = 0.1 Hz to 1 Hz 25°C 1.4 1.4
f = 0.1 Hz to 10 Hz

VO = 1.5 V to 3.5 V,

= 20 kHz,

RL = 600 Ω

=

= 1.5 V to 3.5 V,
f = 20 kHz,
RL = 600 Ω

f = 10 kHz,
CL = 100 pF

V

= 1 V,

O(PP)

RL = 600 Ω‡,

AV = –1,
Step = 1.5 V to 3.5 V,
RL = 600 Ω‡,
CL = 100 pF

R

= 600 Ω‡, C

,

=

‡

‡

‡

‡

L

AV = 1
AV = 10

AV = 1 0.018% 0.018%
AV = 10
AV = 100 0.116% 0.116%
RL = 600 Ω‡,

AV = 1,
CL = 100 pF

To 0.1%

To 0.01%

= 100 pF

25°C

,

Full

range

25°C 15 15

25°C 1.5 1.5

25°C 0.6 0.6

25°C

25°C 2 2 MHz

25°C 300 300 kHz

‡

°

25°C 48° 48°
25°C 8 8 dB

V/µs

n

µ

fA/√Hz

µ

z

8

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PARAMETER

TEST CONDITIONS

UNIT

R

S

Ω

ICR

gg

IO

S

VOLLow-level output voltage

mV

AVDLarge-signal differential voltage amplification

V

1 V to 2 V

V/mV

k

Suppl

oltage rejection ratio (∆VDD/∆VIO)

V

2.7 V to 8 V

V

0

No load96dB

PARAMETER

TEST CONDITIONS

UNIT

R

S

Ω

ICR

gg

IO

S

VOLLow-level output voltage

mV

AVDLarge-signal differential voltage amplification

V

1 V to 2 V

V/mV

k

Suppl

oltage rejection ratio (∆VDD/∆VIO)

V

2.7 V to 8 V

V

0

No load96dB

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

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

TLV2731Y

MIN TYP MAX

V

IO

I

IO

I

IB

V

ICR

V

OH

r

id

r

ic

c

ic

z

o

CMRR Common-mode rejection ratio VIC = 0 to 1.7 V, VO = 0, RS = 50 Ω 70 dB

SVR

I

DD

†

Referenced to 1.5 V

Input offset voltage
Input offset current
Input bias current

Common-mode input voltage range |VIO| ≤5 mV, RS = 50 Ω

High-level output voltage IOH = –1 mA 2.87 V

p

p

Differential input resistance 10
Common-mode input resistance 10
Common-mode input capacitance f = 10 kHz 6 pF
Closed-loop output impedance f = 1 MHz, AV = 1 156 Ω

pp

y v

Supply current VO = 0, No load 750 µA

VDD± = ±1.5 V,

= 50

VIC = 1.5 V, IOL = 50 µA 10
VIC = 1.5 V, IOL = 500 µA 100

=

O

=

DD

VIC = 0, VO = 0,

RL = 600 Ω
RL = 1 MΩ

,

,

=

IC

†

†

750 µV

0.5 60 pA
1 60 pA

–0.3

to

2.2

1.6

250

12
12

V

Ω
Ω

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

TLV2731Y

MIN TYP MAX

V

IO

I

IO

I

IB

V

ICR

V

OH

r

id

r

ic

c

ic

z

o

CMRR Common-mode rejection ratio VIC = 0 to 1.7 V, VO = 0, RS = 50 Ω 70 dB

SVR

I

DD

†

Referenced to 2.5 V

Input offset voltage
Input offset current
Input bias current

Common-mode input voltage range |VIO| ≤5 mV, RS = 50 Ω

High-level output voltage IOH = –1 mA 4.9 V

p

p

Differential input resistance 10
Common-mode input resistance 10
Common-mode input capacitance f = 10 kHz 6 pF
Closed-loop output impedance f = 1 MHz, AV = 1 138 Ω

pp

y v

Supply current VO = 0, No load 850 µA

VDD± = ±1.5 V,

= 50

VIC = 2.5 V, IOL = 500 µA 80
VIC = 2.5 V, IOL = 1 mA 160

=

O

=

DD

VIC = 0, VO = 0,

RL = 600 Ω
RL = 1 MΩ

,

,

=

IC

†

†

710 µV

0.5 60 pA
1 60 pA

–0.3

to

4.2

15

400

12
12

V

Ω
Ω

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

9

TLV2731, TLV2731Y

VIOInput offset voltage

,

VIInput voltage

yg

IOSShort-circuit output current

yg

AVDLarge-signal differential voltage amplification

qy

,

y

CMRR

Common-mode rejection ratio

qy

y

k

Supply-voltage rejection ratio

qy

,

SR

Slew rate

Gain-bandwidth product

φmPhase margin

qy

,

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

Table of Graphs

p

α

VIO

IIB/I

IO

V

OH

V

OL

V

O(PP)

V

O

A

VD

z

o

SVR

I

DD

V

O

V

O

V

O

V

O

V

n

THD + N Total harmonic distortion plus noise vs Frequency 46

B

1

Input offset voltage temperature coefficient Distribution 5, 6
Input bias and input offset currents vs Free-air temperature 7

p

High-level output voltage vs High-level output current 10, 13
Low-level output voltage vs Low-level output current 11, 12, 14
Maximum peak-to-peak output voltage vs Frequency 15

p

Output voltage vs Differential input voltage 18, 19
Differential voltage amplification vs Load resistance 20

p

Output impedance vs Frequency 25, 26

pp

Supply current vs Supply voltage 32

Inverting large-signal pulse response 35, 36
Voltage-follower large-signal pulse response 37, 38
Inverting small-signal pulse response 39, 40
Voltage-follower small-signal pulse response 41, 42
Equivalent input noise voltage vs Frequency 43, 44
Noise voltage (referred to input) Over a 10-second period 45

p

Gain margin vs Load capacitance 49, 50

Unity-gain bandwidth vs Load capacitance 53, 54

FIGURE

Distribution 1, 2
vs Common-mode input voltage

vs Supply voltage 8
vs Free-air temperature 9

vs Supply voltage 16
vs Free-air temperature 17

vs Frequency 21, 22
vs Free-air temperature

vs Frequenc
vs Free-air temperature 28

vs Frequenc
vs Free-air temperature

vs Load capacitance 33
vs Free-air temperature 34

vs Free-air temperature 47
vs Supply voltage 48

vs Frequency 21, 22
vs Load capacitance

3, 4

23, 24

27

29, 30

31

51, 52

10

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

†

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

Precentage of Amplifiers – %

DISTRIBUTION OF TLV2731

INPUT OFFSET VOLTAGE

20

537 Amplifiers From 1 Wafer Lot

VDD = ±1.5 V

18

TA = 25°C

16
14

12

10

8

6

4

2
0

–3

–2.6

–2.2

–1.8

–1.4–1–0.6

VIO – Input Offset Voltage – mV

Figure 1

INPUT OFFSET VOLTAGE

COMMON-MODE INPUT VOLTAGE

1

0.8

0.6

VDD = 3 V
RS = 50 Ω
TA = 25°C

vs

–0.2

0.2

0.611.4

DISTRIBUTION OF TLV2731

INPUT OFFSET VOLTAGE

1.8

2.2

2.6

16

14

12

10

8

6

4

Precentage of Amplifiers – %

2

3

0

–3

–2.6

–2.2

–1.8

–1.4–1–0.6

VIO – Input Offset Voltage – mV

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

0.2

0.611.4

–0.2

1.8

2.2

2.6

3

Figure 2

†

1

0.8

0.6

INPUT OFFSET VOLTAGE

vs

COMMON-MODE INPUT VOLTAGE

VDD = 5 V
RS = 50 Ω
TA = 25°C

0.4

0.2

0

–0.2
–0.4

– Input Offset Voltage – mV

–0.6

IO

V

–0.8

–1

–101 2

VIC – Common-Mode Input Voltage – V

3

Figure 3

†

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

0.4

0.2

0

–0.2
–0.4

– Input Offset Voltage – mV

IO

–0.6

V

–0.8

–1

–1012345

VIC – Common-Mode Input Voltage – V

Figure 4

11

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

DISTRIBUTION OF TLV2731 INPUT OFFSET

VOLTAGE TEMPERATURE COEFFICIENT

30

32 Amplifiers From
1 Wafer Lots
V

= ±1.5 V

DD±

25

P Package
TA = 25°C to 125°C

20

15

10

Percentage of Amplifiers – %

5

0

–4 –3 –2 –101234

α

– Input Offset Voltage

VIO

Temperature Coefficient – µV/°C

Figure 5

INPUT BIAS AND INPUT OFFSET CURRENTS

vs

FREE-AIR TEMPERATURE

100

V

= ±2.5 V

DD±

VIC = 0

90

VO = 0
RS = 50 Ω

80
70

†

Percentage of Amplifiers – %

VOLTAGE TEMPERATURE COEFFICIENT

30

32 Amplifiers From
1 Wafer Lots
V

= ±2.5 V

DD±

25

P Package
TA = 25°C to 125°C

20

15

10

5

0

–4 –3 –2 –101234

α

– Input Offset Voltage

VIO

Temperature Coefficient – µV/°C

†

Figure 6

DISTRIBUTION OF TLV2731 INPUT OFFSET

†

5

RS = 50 Ω

4

TA = 25°C

3

2

INPUT VOLTAGE

vs

SUPPLY VOLTAGE

60

50
40
30

20

IO

I

10

0

IB

IIB and IIO – Input Bias and Input Offset Currents – pA

I

25 45 65 85 105 125

TA – Free-Air Temperature – °C

I

IB

I

IO

Figure 7

†

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

1
0

–1

– Input Voltage – V

–2

I

V

–3
–4

–5

1 1.5 2 2.5

|V

| – Supply Voltage – V

DD±

Figure 8

|VIO| ≤5 mV

3 3.5 4

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

INPUT VOLTAGE

vs

FREE-AIR TEMPERATURE

5

VDD = 5 V

4

3

2

1

– Input Voltage – V

I

V

0

–1

–55 –35 –15 5 25 45 65 85

TA – Free-Air Temperature – °C

|VIO| ≤5 mV

Figure 9

LOW-LEVEL OUTPUT VOLTAGE

vs

LOW-LEVEL OUTPUT CURRENT

1.2
VDD = 3 V

TA = 25°C

1

VIC = 0

0.8

VIC = 0.75 V

0.6

0.4

– Low-Level Output Voltage – V

0.2

OL

V

†

VIC = 1.5 V

105 125

‡

– High-Level Output Voltage – V

V

– Low-Level Output Voltage – V
V

OH

OL

2.5

1.5

0.5

1.4

1.2

0.8

0.6

0.4

0.2

HIGH-LEVEL OUTPUT VOLTAGE

vs

HIGH-LEVEL OUTPUT CURRENT

3

2

1

TA = 125°C

0

0

|IOH| – High-Level Output Current – mA

51015

Figure 10

LOW-LEVEL OUTPUT VOLTAGE

vs

LOW-LEVEL OUTPUT CURRENT

VDD = 3 V
VIC = 1.5 V

TA = 125°C

1

TA = 85°C

TA = 25°C

†‡

VDD = 3 V

TA = –40°C

TA = 25°C

TA = 85°C

†‡

TA = – 40°C

0

0123

IOL – Low-Level Output Current – mA

45

Figure 11

†

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

0

0123

IOL – Low-Level Output Current – mA

Figure 12

45

13

TLV2731, TLV2731Y

ÁÁ

ÁÁ

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

HIGH-LEVEL OUTPUT VOLTAGE

vs

HIGH-LEVEL OUTPUT CURRENT

5

4.5

– High-Level Output Voltage – V

V

OH

3.5

2.5

1.5

0.5

4

3

TA = 25°C

TA = 85°C

2

TA = 125°C

1

0

0

51015202530

|IOH| – High-Level Output Current – mA

TA = –40°C

Figure 13

MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE

vs

FREQUENCY

5

RI = 600 Ω
TA = 25°C

– Maximum Peak-to-Peak Output Voltage – V

O(PP)

V

4

3

2

1

0

2

10

VDD = 5 V

VDD = 3 V

3

10

f – Frequency – Hz

10

4

†‡

VDD = 5 V

5

10

10

LOW-LEVEL OUTPUT VOLTAGE

†‡

vs

LOW-LEVEL OUTPUT CURRENT

1.4
VDD = 5 V

VIC = 2.5 V

1.2

TA = 125°C

1

TA = 85°C

0.8

TA = 25°C

0.6

TA = –40°C

456

– Low-Level Output Voltage – V
V

0.4

0.2

OL

0

01 2 3

IOL – Low-Level Output Current – mA

Figure 14

‡

–10
–15

– Short-Circuit Output Current – mA

–20

OS

I

–25

6

–30

SHORT-CIRCUIT OUTPUT CURRENT

vs

SUPPLY VOLTAGE

30

VO = VDD/2

25

VIC = VDD/2
TA = 25°C

20
15

10

5
0

–5

2345678

VDD – Supply Voltage – V

VID = –100 mV

VID = 100 mV

Figure 15

†

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

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Figure 16

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

– Short-Circuit Output Current – mA

OS

I

SHORT-CIRCUIT OUTPUT CURRENT

vs

FREE-AIR TEMPERATURE

30
25
20
15
10

–5

–10
–15
–20
–25
–30

5
0

–50 –25 0 25 50 75 100 125

–75

TA – Free-Air Temperature – °C

VID = –100 mV

VID = 100 mV

Figure 17

OUTPUT VOLTAGE

vs

DIFFERENTIAL INPUT VOLTAGE

5

VDD = 5 V
VIC = 2.5 V
RL = 600 Ω

4

TA = 25°C

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

‡

†‡

OUTPUT VOLTAGE

‡

vs

3

2.5

2

1.5

– Output Voltage – V

1

O

V

0.5

0

DIFFERENTIAL INPUT VOLTAGE

VDD = 3 V
VIC = 1.5 V
RI = 600 Ω
TA = 25°C

VID – Differential Input Voltage – mV

10

86420–2–4–6–8–10

Figure 18

DIFFERENTIAL VOLTAGE AMPLIFICATION

vs

LOAD RESISTANCE

4

10

V

= 2 V

O(PP)

TA = 25°C

3

10

‡

3

2

10

2

– Output Voltage – V

O

V

1

0

10

86420– 2–4–6–8–10

VID – Differential Input Voltage – mV

1

10

– Differential Voltage Amplification – V/mV

VD

A

1

0.1 10

Figure 19

†

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

VDD = 5 V

VDD = 3 V

1

RL – Load Resistance – kΩ

1

10

Figure 20

2

10

3

15

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

LARGE-SIGNAL DIFFERENTIAL VOLTAGE

AMPLIFICATION AND PHASE MARGIN

80

VDD = 3 V
RL = 600 Ω
CL= 100 pF

60

TA = 25°C

40

20

0

Voltage Amplification – dB

VD

AVD – Large-Signal Differential

A

–20

–40

4

10

LARGE-SIGNAL DIFFERENTIAL VOLTAGE

AMPLIFICATION AND PHASE MARGIN

80

VDD = 5 V
RL= 600 Ω
CL= 100 pF

60

TA = 25°C

vs

FREQUENCY

Phase Margin

Gain

5

10

f – Frequency – Hz

Figure 21

vs

FREQUENCY

10

†

180°

135°

90°

45°

0°

–45°

6

10

–90°

7

m

om – Phase Margin

φ

†

180°

135°

40

20

0

Voltage Amplification – dB

VD

AVD – Large-Signal Differential

A

–20

–40

4

10

Gain

5

10

f – Frequency – Hz

Phase Margin

6

10

10

90°

45°

0°

–45°

–90°

7

m

om – Phase Margin

φ

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

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

LARGE-SIGNAL DIFFERENTIAL

VOLTAGE AMPLIFICATION

vs

FREE-AIR TEMPERATURE

3

10

RL = 1 MΩ

2

10

1

10

RL = 600 Ω

1

Amplification – V/mV

– Large-Signal Differential Voltage

VD

A

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

0.1

–75 125

–50 –25 0 25 50 75 100

TA – Free-Air Temperature – °C

Figure 23

†‡

– Large-Signal Differential Voltage A

VD

10

10

10

Amplification – V/mV

0.1

LARGE-SIGNAL DIFFERENTIAL

VOLTAGE AMPLIFICATION

vs

FREE-AIR TEMPERATURE

3

RL = 1 MΩ

2

1

RL = 600 Ω

1

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

–50 –25 0 25 50 75 100 125

–75

TA – Free-Air Temperature – °C

Figure 24

†‡

10

‡

OUTPUT IMPEDANCE

‡

vs

FREQUENCY

1000

Ω

– Output Impedance –

o

z

5

10

6

100

10

0.1

1

10

VDD = 5 V
TA = 25°C

AV = 100

AV = 10

AV = 1

2

3

10

f– Frequency – Hz

10

4

10

5

Figure 26

OUTPUT IMPEDANCE

vs

FREQUENCY

Ω

– Output Impedance –

o

z

1000

100

0.1

10

1

10

VDD = 3 V
TA = 25°C

AV = 100

AV = 10

AV = 1

2

3

10

f– Frequency – Hz

10

4

Figure 25

†

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.

10

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

17

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

CMRR – Common-Mode Rejection Ratio – dB

COMMON-MODE REJECTION RATIO

vs

FREQUENCY

100

VDD = 5 V
VIC = 2.5 V

80

VDD = 3 V

60

VIC = 1.5 V

40

20

0

10

2

10

3

4

10

f – Frequency – Hz

10

Figure 27

SUPPLY-VOLTAGE REJECTION RATIO

vs

FREQUENCY

100

VDD = 3 V
TA = 25°C

80

k

SVR+

5

†

TA = 25°C

6

10

COMMON-MODE REJECTION RATIO

†‡

vs

FREE-AIR TEMPERATURE

84

82

VDD = 5 V

VDD = 3 V

– 50 – 25 0 25 50 75 100– 75 125

TA – Free-Air Temperature – °C

10

80

78

76

74

72

CMMR – Common-Mode Rejection Ratio – dB

70

7

Figure 28

†

SUPPLY-VOLTAGE REJECTION RATIO

vs

FREQUENCY

100

VDD = 5 V
TA = 25°C

80

k

SVR+

†

60

k

SVR–

3

10

f – Frequency – Hz

10

4

10

5

10

6

10

7

– Supply-Voltage Rejection Ratio – dB

k

SVR

40

20

0

2

10

Figure 29

†

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

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

– Supply-Voltage Rejection Ratio – dB

SVR

k

60

40

20

0
10

k

SVR–

2

3

10

f – Frequency – Hz

10

4

10

5

10

Figure 30

10

7

6

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

– Supply-Voltage Rejection Ratio – dB

SVR

k

sµ

V/

SR – Slew Rate –

SUPPLY-VOLTAGE REJECTION RATIO

vs

FREE-AIR TEMPERATURE

100

VDD = 2.7 V to 8 V
VIC = VO = VDD /2

98

96

94

92

90

–50 –25 0 25 50 75 100 125–75

TA – Free-Air Temperature – °C

Figure 31

SLEW RATE

vs

LOAD CAPACITANCE

3.5

3

2.5

2

1.5

1

SR+

SR–

‡

VDD = 5 V
AV = –1
TA = 25°C

†

SUPPLY CURRENT

†

vs

SUPPLY VOLTAGE

1000

VO = 0
No Load

Aµ

750

500

– Supply Current –

DD

250

I

0

012345678

VDD – Supply Voltage – V

TA = –40°C

TA = 85°C

TA = 25°C

Figure 32

SLEW RATE

FREE-AIR TEMPERATURE

4

VDD = 5 V
RL = 600 Ω
CL = 100 pF
AV = 1

3

sµ
V/

2

SR+

SR – Slew Rate –

1

†‡

vs

SR–

0.5

0
10

1

2

10

CL – Load Capacitance – pF

10

3

10

4

10

5

Figure 33

†

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

0

–50 –25 0 25 50 75 100–75 125

TA – Free-Air Temperature – °C

Figure 34

19

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

INVERTING LARGE-SIGNAL PULSE

RESPONSE

3

VDD = 3 V
RL = 600 Ω
CL = 100 pF

2.5
AV = –1

TA = 25°C

2

1.5

1

– Output Voltage – V

O

V

0.5

0

0

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

t – Time – µs

†

– Output Voltage – V

O

V

Figure 35

VOLTAGE-FOLLOWER LARGE-SIGNAL

PULSE RESPONSE

3

VDD = 3 V
RL = 600 Ω
CL = 100 pF

2.5
AV = 1

TA = 25°C

2

†

INVERTING LARGE-SIGNAL PULSE

RESPONSE

5

VDD = 5 V
RL = 600 Ω
CL = 100 pF

4

AV = –1
TA = 25°C

3

2

1

0

0

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

t – Time – µs

†

Figure 36

VOLTAGE-FOLLOWER LARGE-SIGNAL

PULSE RESPONSE

5

VDD = 5 V
RL = 600 Ω
CL = 100 pF

4

AV = 1
TA = 25°C

3

†

1.5

– Output Voltage – V

1

O

V

0.5

0

0123456

t – Time – µs

78910

Figure 37

†

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

2

– Output Voltage – V

O

V

1

0

01 23456

t – Time – µs

Figure 38

78910

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

INVERTING SMALL-SIGNAL

PULSE RESPONSE

1.56

1.54

1.52

– Output Voltage – V

O

V

1.48

1.46

VDD = 3 V
RL = 600 Ω
CL = 100 pF
AV = –1
TA = 25°C

1.5

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

0

t – Time – µs

†

2.56

2.54

2.52

2.5

O

V

VO – Output Voltage – V

2.48

2.46
0

Figure 39

VOLTAGE-FOLLOWER SMALL-SIGNAL

PULSE RESPONSE

1.56
VDD = 3 V

RL = 600 Ω
CL = 100 pF

1.54

AV = 1
TA = 25°C

†

2.56

2.54

INVERTING SMALL-SIGNAL

PULSE RESPONSE

VDD = 5 V
RL = 600 Ω
CL = 100 pF
AV = –1
TA = 25°C

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

t – Time – µs

†

Figure 40

VOLTAGE-FOLLOWER SMALL-SIGNAL

PULSE RESPONSE

VDD = 5 V
RL = 600 Ω
CL = 100 pF
AV = 1
TA = 25°C

†

1.52

1.5

O

V

VO – Output Voltage – V

1.481.48

1.48

0

0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.50

t – Time – µs

Figure 41

†

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

2.52

2.5

O

V

VO – Output Voltage – V

2.48

2.46
0

0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5

t – Time – µs

Figure 42

21

TLV2731, TLV2731Y

†

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

Hz

nV/

– Equivalent Input Noise Voltage –

n

V

EQUIVALENT INPUT NOISE VOLTAGE

vs

FREQUENCY

120

100

80

60

40

20

0

10

1

2

10
f – Frequency – Hz

Figure 43

10

VDD = 3 V
RS = 20 Ω
TA = 25°C

3

†

EQUIVALENT INPUT NOISE VOLTAGE

†

vs

FREQUENCY

10

120

100

nV/ Hz

80

60

40

20

– Equivalent Input Noise Voltage –

n

V

0

4

10

1

2

10

f – Frequency – Hz

10

3

VDD = 5 V
RS = 20 Ω
TA = 25°C

10

4

Figure 44

INPUT NOISE VOLTAGE OVER

A 10-SECOND PERIOD

1000

–250

Noise Voltage – nV

–500

–750

–1000

VDD = 5 V
f = 0.1 Hz to 10 Hz

750

TA = 25°C

500

250

0

0246

t – Time – s

Figure 45

†

810

TOTAL HARMONIC DISTORTION PLUS NOISE

vs

FREQUENCY

AV = 100

RL = 600 Ω to 2.5 V
RL = 600 Ω to 0 V

2

10

f – Frequency – Hz

10

3

AV = 100

AV = 10

THD + N – Total Harmonic Distortion Plus Noise – %

10

0.1

0.01

1

10

1

VDD = 5 V
TA = 25°C

Figure 46

10

AV = 10

AV = 1

AV = 1

4

10

5

†

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

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

Gain-Bandwidth Product – kHz

4

3.5

3

2.5

2

1.5

1

20

GAIN-BANDWIDTH PRODUCT

vs

FREE-AIR TEMPERATURE

VDD = 5 V
f = 10 kHz
RL = 600 Ω
CL = 100 pF

–50 –25 0 25 50 10075 125–75

TA – Free-Air Temperature – °C

Figure 47

GAIN MARGIN

vs

LOAD CAPACITANCE

TA = 25°
RL =

∞

†‡

GAIN-BANDWIDTH PRODUCT

‡

vs

SUPPLY VOLTAGE

2.5
RL = 600 Ω
CL = 100 pF
TA = 25°C

2.25

2

1.75

Gain-Bandwidth Product – kHz

1.5

0235

VDD – Supply Voltage – V

78146

Figure 48

‡

GAIN MARGIN

vs

LOAD CAPACITANCE

20

TA = 25°
RL =

600 Ω

‡

R

= 100 Ω

null

R

null

R

= 0

null

2

10

CL – Load Capacitance – pF

10

3

R

R

null

= 50 Ω

10

= 500 Ω

null

= 1000 Ω

4

10

15

10

Gain Margin – dB

5

5

0
10

1

Gain Margin – dB

15

10

5

0
10

1

Figure 49

†

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.

R

= 100 Ω

null

R

= 0

null

2

10

CL – Load Capacitance – pF

10

R

null

R

= 50 Ω

null

3

Figure 50

= 500 Ω

4

10

10

5

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23

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

TYPICAL CHARACTERISTICS

75°

TA = 25°C
RL =

60°

45°

30°

m

om – Phase Margin

φ

15°

0°

1

10

10

TA = 25°C
RL =

PHASE MARGIN

vs

LOAD CAPACITANCE

∞

R

null

R

= 500 Ω

null

R

R

= 0

null

2

10

CL – Load Capacitance – pF

10

3

Figure 51

UNITY-GAIN BANDWIDTH

vs

LOAD CAPACITANCE

∞

†

= 1000 Ω

R

null

= 50 Ω

null

4

10

= 100 Ω

†

10

PHASE MARGIN

†

vs

LOAD CAPACITANCE

75°

TA = 25°C
RL = 600 Ω

R

= 500 Ω

60°

R

= 100 Ω

= 0 Ω

2

null

10

45°

30°

m

om – Phase Margin

φ

15°

5

0°

10

R

null

1

10

CL – Load Capacitance – pF

null

R

= 50 Ω

null

3

10

4

10

5

Figure 52

UNITY-GAIN BANDWIDTH

vs

LOAD CAPACITANCE

10

TA = 25°C
RL = 600 Ω

†

1

– Unity-Gain Bandwidth – kHz

1

B

0.1
10

2

3

10

CL – Load Capacitance – pF

10

4

10

5

Figure 53

†

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.

24

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

– Unity-Gain Bandwidth – kHz

1

B

0.1

1

10

2

3

10

CL – Load Capacitance – pF

10

4

Figure 54

10

5

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

APPLICATION INFORMATION

driving large capacitive loads

The TLV2731 is designed to drive larger capacitive loads than most CMOS operational amplifiers. Figure 49
through Figure 54 illustrate its ability to drive loads greater than 100 pF while maintaining good gain and phase
margins (R

A small series resistor (R
when driving large capacitive loads. Figure 49 through Figure 52 show the effects of adding series resistances
of 50 Ω, 100 Ω, 500 Ω, and 1000 Ω. 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.

null

= 0).

) at the output of the device (see Figure 55) improves the gain and phase margins

null

∆φ

m1

+

tan

–1

ǒ

2 ×π×UGBW × R

null

× C

Ǔ

L

(1)

Where :

∆φm1+

UGBW

R

null

C

Improvement in phase margin

+

Unity-gain bandwidth frequency

+

Output series resistance

+

Load capacitance

L

The unity-gain bandwidth (UGBW) frequency decreases as the capacitive load increases (see Figure 53 and
Figure 54). To use equation 1, UGBW must be approximated from Figure 53 and Figure 54.

V

DD+

R

V

I

–

+

V

DD–

/GND

null

C

R

L

L

Figure 55. Series-Resistance Circuit

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25

TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

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 56 are generated using
the TLV2731 typical electrical and operating characteristics at T
simulations of the following key parameters can be generated to a tolerance of 20% (in most cases):

D

Maximum positive output voltage swing

D

Maximum negative output voltage swing

D

Slew rate

D

Quiescent power dissipation

D

Input bias current

D

Open-loop voltage amplification

D
D
D
D
D
D

= 25°C. Using this information, output

A

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).

V

DD+

RSS ISS

RP

2

IN –

DP

IN+

1

V

DD–

.SUBCKT TLV2731 1 2 3 4 5

C1 11 12 13.51E–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 90.83E3 –10E3 10E3 10E3 –10E3
GA 6 0 11 12 314.2E–6
GCM 0 6 10 99 242.35E–9
ISS 3 10 DC 87.00E–6
HLIM 90 0 VLIM 1K
J1 11 2 10 JX
J2 12 1 10 JX
R2 6 9 100.0E3

11

RD1

VAD

J1 J2

+

–

10

99

3

+

VC

12

C1

RD2

60

4

VE

DC

DE

54

+–

R2

–

53

6

9

GCM

EGND

+

–

+

FB

–

VB

C2

GA

RD1 60 11 3.183E3
RD2 60 12 3.183E3
R01 8 5 25
R02 7 99 25
RP 3 4 6.553E3
RSS 10 99 2.500E6
VAD 60 4 –.5
VB 9 0 DC 0
VC 3 53 DC .795
VE 54 4 DC .795
VLIM 7 8 DC 0
VLP 91 0 DC 12.4
VLN 0 92 DC 17.4
.MODEL DX D (IS=800.0E–18)
.MODEL JX PJF (IS=500.0E–15 BETA=2.939E–3
+ VTO=–.065)
.ENDS

7

VLIM

RO2

HLIM

8

5

OUT

+

–

RO1

90

+

DLP

–

91

+

–

DLN

92

–

VLNVLP

+

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

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TLV2731, TLV2731Y

Advanced LinCMOS RAIL-TO-RAIL

LOW-POWER SINGLE OPERATIONAL AMPLIFIERS

SLOS198A – AUGUST 1997 – REVISED MARCH 2001

MECHANICAL INFORMATION

DBV (R-PDSO-G5) PLASTIC SMALL-OUTLINE PACKAGE

0,95

1,30
1,00

0,40
0,20

45

1,80
1,50

1

3,10

2,70

3

0,05 MIN

M

0,25

3,00
2,50

Seating Plane

0,10

0,15 NOM

0°–8°

Gage Plane

0,25

0,55
0,35

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.

4073253-4/A 12/96

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

27

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Copyright  2001, Texas Instruments Incorporated

statements different from or beyond the parameters

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