Datasheet OPA234P, OPA234PA, OPA234UA-2K5, OPA4234UA, OPA4234UA-2K5 Datasheet (Burr Brown)

1

®

OPA234, 2234, 4234

1
2
3
4
5
6
7

14
13
12
11
10

9
8

Out D
–In D
+In D
V–
+In C
–In C
Out C

Out A

–In A
+In A

V+
+In B
–In B

Out B

OPA4234

14-Pin DIP

SO-14

AD

BC

®

OPA234
OPA2234
OPA4234

Low Power, Precision

SINGLE-SUPPLY OPERATIONAL AMPLIFIERS

FEATURES

● WIDE SUPPLY RANGE:

Single Supply: VS = +2.7V to +36V
Dual Supply: VS = ±1.35V to ±18V

● GUARANTEED PERFORMANCE:

+2.7V, +5V, and ±15V

● LOW QUIESCENT CURRENT: 250µA/amp

● LOW INPUT BIAS CURRENT: 25nA max

● LOW OFFSET VOLTAGE: 100µV max

● HIGH CMRR, PSRR, and A

OL

● SINGLE, DUAL, and QUAD VERSIONS

DESCRIPTION

The OPA234 series low cost op amps are ideal for
single supply, low voltage, low power applications. The
series provides lower quiescent current than older
“1013”-type products and comes in current industry­standard packages and pinouts. The combination of low
offset voltage, high common-mode rejection, high power
supply rejection, and a wide supply range provides
excellent accuracy and versatility. Single, dual, and
quad versions have identical specifications for maxi­mum design flexibility. These general purpose op amps
are ideal for portable and battery powered applications.

OPA234 series op amps operate from either single or
dual supplies. In single supply operation, the input com­mon-mode range extends below ground and the output
can swing to within 50mV of ground. Excellent phase
margin makes the OPA234 series ideal for demanding
applications, including high load capacitance. Dual and
quad designs feature completely independent circuitry
for lowest crosstalk and freedom from interaction.

Single version packages are DIP-8, SO-8 surface-mount,
and a space-saving MSOP-8 surface-mount. Dual pack­ages are DIP-8 and SO-8 surface-mount. Quad pack­ages are DIP-14 and SO-14 surface-mount. All are
specified for –40°C to +85°C operation.

1
2
3
4

8
7
6
5

V+
Out B
–In B
+In B

Out A

–In A
+In A

V–

OPA2234

8-Pin DIP, SO-8

A

B

1
2
3
4

8
7
6
5

NC
V+
Output
Offset Trim

Offset Trim

–In

+In

V–

OPA234

8-Pin DIP, SO-8, MSOP-8

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

OPA234

OPA234

OPA2234

OPA2234

OPA4234

OPA234

OPA4234

© 1996 Burr-Brown Corporation PDS-1318B Printed in U.S.A., May, 2000

For most current data sheet and other product

information, visit www.burr-brown.com

2

®

OPA234, 2234, 4234

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

SPECIFICATIONS: VS = +5V

At TA = 25°C, VS = +5V, RL = 10kΩ connected to VS/2 and V

OUT

= VS/2, unless otherwise noted.

OPA234P, U, E

OPA2234P, U

OPA234PA, UA, EA

OPA2234PA, UA

OPA4234PA, UA, U
PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE

Input Offset Voltage V

OS

V

CM

= 2.5V ±40 ±100 ✻ ±250 µV

OPA234E, EA ±100 ±150 ✻ ±350 µV

vs Temperature

(1)

dVOS/dT Operating Temperature Range ±0.5 ±3 ✻✻µV/°C

vs Power Supply PSRR V

S

= +2.7V to +30V, V

CM

= 1.7V 3 10 ✻ 20 µV/V

vs Time 0.2 ✻ µV/mo

Channel Separation (Dual, Quad) 0.3 ✻ µV/V

INPUT BIAS CURRENT

Input Bias Current

(2)

I

B

V

CM

= 2.5V –15 –30 ✻ –50 nA

Input Offset Current I

OS

V

CM

= 2.5V ±1 ±5 ✻✻nA

NOISE f = 1kHz
Input Voltage Noise Density v

n

25 ✻ nV/√Hz

Current Noise Density i

n

80 ✻ fA/√Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range –0.1 (V+) –1 ✻✻V
Common-Mode Rejection CMRR V

CM

= –0.1V to 4V 91 106 86 ✻ dB

INPUT IMPEDANCE

Differential 10

7

|| 5 ✻ Ω || pF

Common-Mode V

CM

= 2.5V 10

10

|| 6 ✻ Ω || pF

OPEN-LOOP GAIN V

O

= 0.25V to 4V

Open-Loop Voltage Gain A

OL

RL = 10kΩ 108 120 100 ✻ dB

R

L

= 2kΩ 86 96 86 ✻ dB

FREQUENCY RESPONSE

Gain-Bandwidth Product GBW C

L

= 100pF 0.35 ✻ MHz
Slew Rate SR 0.2 ✻ V/µs
Settling Time: 0.1% G = 1, 3V Step, C

L

= 100pF 15 ✻ µs

0.01% G = 1, 3V Step, C

L

= 100pF 25 ✻ µs

Overload Recovery Time (V

IN

) (Gain) = V

S

16 ✻ µs

OUTPUT

Voltage Output: Positive R

L

= 10kΩ to VS/2 (V+) –1

(V+) –0.65

✻✻ V

Negative R

L

= 10kΩ to VS/2 0.25 0.05 ✻✻ V

Positive R

L

= 10kΩ to Ground (V+) –1

(V+) –0.65

✻✻ V

Negative R

L

= 10kΩ to Ground 0.1 0.05 ✻✻ V

Short-Circuit Current I

SC

±11 ✻ mA

Capacitive Load Drive (Stable Operation)

(3)

G = +1 1000 ✻ pF

POWER SUPPLY

Specified Operating Voltage +5 ✻ V
Operating Voltage Range +2.7 +36 ✻✻V
Quiescent Current (per amplifier) I

Q

IO = 0 250 300 ✻✻µA

TEMPERATURE RANGE

Specified Range –40 +85 ✻✻°C
Operating Range –40 +125 ✻✻°C
Storage –55 +125 ✻✻°C
Thermal Resistance

θ

JA

8-Pin DIP 100 ✻ °C/W
SO-8 Surface-Mount 150 ✻ °C/W
MSOP-8 Surface-Mount 220 ✻ °C/W
14-Pin DIP 80 ✻ °C/W

SO-14 Surface-Mount 110 ✻ °C/W
✻ Specifications same as OPA234P,U,E.
NOTES: (1) Guaranteed by wafer-level test to 95% confidence level. (2) Positive conventional current flows into the input terminals. (3) See “Small-Signal Overshoot

vs Load Capacitance” typical curve.

3

®

OPA234, 2234, 4234

SPECIFICATIONS: VS = +2.7V

At TA = 25°C, VS = +2.7V, RL = 10kΩ connected to VS/2 and V

OUT

= VS/2, unless otherwise noted.

OPA234P, U, E

OPA2234P, U

OPA234PA, UA, EA

OPA2234PA, UA

OPA4234PA, UA, U
PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE

Input Offset Voltage V

OS

V

CM

= 1.35V ±40 ±100 ✻ ±250 µV

OPA234E, EA ±100 ±150 ✻ ±350 µV

vs Temperature

(1)

dVOS/dT Operating Temperature Range ±0.5 ±3 ✻✻µV/°C

vs Power Supply PSRR V

S

= +2.7V to +30V, V

CM

= 1.7V 3 10 ✻ 20 µV/V

vs Time 0.2 ✻ µV/mo

Channel Separation (Dual, Quad) 0.3 ✻ µV/V

INPUT BIAS CURRENT

Input Bias Current

(2)

I

B

V

CM

= 1.35V –15 –30 ✻ –50 nA

Input Offset Current I

OS

V

CM

= 1.35V ±1 ±5 ✻✻ n

NOISE f = 1kHz
Input Voltage Noise Density v

n

25 ✻ nV/√Hz

Current Noise Density i

n

80 ✻ fA/√Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range –0.1 (V+) –1 ✻✻V
Common-Mode Rejection CMRR V

CM

= –0.1V to 1.7V 91 106 86 ✻ dB

INPUT IMPEDANCE

Differential 10

7

|| 5 ✻ Ω || pF

Common-Mode V

CM

= 1.35V 10

10

|| 6 ✻ Ω || pF

OPEN-LOOP GAIN V

O

= 0.25V to 1.7V

Open-Loop Voltage Gain A

OL

RL = 10kΩ 108 125 100 ✻ dB

R

L

= 2kΩ 86 96 86 ✻ dB

FREQUENCY RESPONSE

Gain-Bandwidth Product GBW C

L

= 100pF 0.35 ✻ MHz
Slew Rate SR 0.2 ✻ V/µs
Settling Time: 0.1% G = 1, 1V Step, C

L

= 100pF 6 ✻ µs

0.01% G = 1, 1V Step, C

L

= 100pF 16 ✻ µs

Overload Recovery Time (V

IN)

(Gain) = V

S

8 ✻ µs

OUTPUT

Voltage Output: Positive R

L

= 10kΩ to VS/2 (V+) –1 (V+) –0.6 ✻✻ V

Negative R

L

= 10kΩ to VS/2 0.25 0.05 ✻✻ V

Positive R

L

= 10kΩ to Ground (V+) –1

(V+) –0.65

✻✻ V

Negative R

L

= 10kΩ to Ground 0.1 0.05 ✻✻ V

Short-Circuit Current I

SC

±8 ✻ mA

Capacitive Load Drive (Stable Operation)

(3)

G = +1 1000 ✻ pF

POWER SUPPLY

Specified Operating Voltage +2.7 ✻ V
Operating Voltage Range +2.7 +36 ✻✻V
Quiescent Current (per amplifier) I

Q

IO = 0 250 300 ✻✻µA

TEMPERATURE RANGE

Specified Range –40 +85 ✻✻°C
Operating Range –40 +125 ✻✻°C
Storage –55 +125 ✻✻°C
Thermal Resistance

θ

JA

8-Pin DIP 100 ✻ °C/W
SO-8 Surface-Mount 150 ✻ °C/W
MSOP-8 Surface-Mount 220 ✻ °C/W
14-Pin DIP 80 ✻ °C/W

SO-14 Surface-Mount 110 ✻ °C/W
✻ Specifications same as OPA234P,U,E.
NOTES: (1) Guaranteed by wafer-level test to 95% confidence level. (2) Positive conventional current flows into the input terminals. (3) See “Small-Signal Overshoot

vs Load Capacitance” typical curve.

4

®

OPA234, 2234, 4234

PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE

Input Offset Voltage V

OS

V

CM

= 0V ±70 ±250 ✻ ±500 µV

OPA4234U Model ±70 ±250 µV

vs Temperature

(1)

dVOS/dT Operating Temperature Range ±0.5 ±5 ✻✻µV/°C

vs Power Supply PSRR V

S

= ±1.35V to ±18V, V

CM

= 0V 3 10 ✻ 20 µV/V

vs Time 0.2 ✻ µV/mo

Channel Separation (Dual, Quad) 0.3 ✻ µV/V

INPUT BIAS CURRENT

Input Bias Current

(2)

I

B

V

CM

= 0V –12 –25 ✻ –50 nA

Input Offset Current I

OS

V

CM

= 0V ±1 ±5 ✻✻nA

NOISE f = 1kHz
Input Voltage Noise Density v

n

25 ✻ nV/√Hz

Current Noise Density i

n

80 ✻ fA/√Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range (V–) (V+) –1 ✻✻V
Common-Mode Rejection CMRR V

CM

= –15V to 14V 91 106 86 ✻ dB

INPUT IMPEDANCE

Differential 10

7

|| 5 ✻ Ω || pF

Common-Mode V

CM

= 0V 10

10

|| 6 ✻ Ω || pF

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

OL

VO = –14.5V to 14V 110 120 100 ✻ dB

FREQUENCY RESPONSE

Gain-Bandwidth Product GBW C

L

= 100pF 0.35 ✻ MHz
Slew Rate SR 0.2 ✻ V/µs
Settling Time: 0.1% G = 1, 10V Step, C

L

= 100pF 41 ✻ µs

0.01% G = 1, 10V Step, C

L

= 100pF 47 ✻ µs

Overload Recovery Time (V

IN

) (Gain) = V

S

22 ✻ µs

OUTPUT

Voltage Output: Positive (V+) –1 (V+) –0.7 ✻✻ V

Negative (V–) +0.5

(V–) +0.15

✻✻ V

Short-Circuit Current I

SC

±22 ✻ mA

Capacitive Load Drive (Stable Operation)

(3)

G = +1 1000 ✻ pF

POWER SUPPLY

Specified Operating Voltage ±15 ✻ V
Operating Voltage Range ±1.35 ±18 ✻✻V
Quiescent Current (per amplifier) I

Q

IO = 0 ±275 ±350 ✻✻µA

TEMPERATURE RANGE

Specified Range –40 +85 ✻✻°C
Operating Range –40 +125 ✻✻°C
Storage –55 +125 ✻✻°C
Thermal Resistance

θ

JA

8-Pin DIP 100 ✻ °C/W
SO-8 Surface-Mount 150 ✻ °C/W
MSOP-8 Surface-Mount 220 ✻ °C/W
14-Pin DIP 80 ✻ °C/W
SO-14 Surface-Mount 110 ✻ °C/W

✻ Specifications same as OPA234P,U,E.
NOTES: (1) Guaranteed by wafer-level test to 95% confidence level. (2) Positive conventional current flows into the input terminals. (3) See “Small-Signal Overshoot

vs Load Capacitance” typical curve.

SPECIFICATIONS: VS = ±15V

At TA = 25°C, VS = ±15V, RL = 10kΩ connected to ground, unless otherwise noted.

OPA234P, U, E

OPA2234P, U

OPA234PA, UA, EA

OPA2234PA, UA

OPA4234PA, UA, U

5

®

OPA234, 2234, 4234

ELECTROSTATIC
DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degrada­tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, V+ to V– .................................................................... 36V

Input Voltage ..................................................... (V–) –0.7V to (V+) +0.7V

Output Short-Circuit

(1)

.............................................................. Continuous

Operating Temperature .................................................. –40°C to +125°C

Storage Temperature .....................................................–55 °C to +125°C

Junction Temperature ...................................................................... 150°C

Lead Temperature (soldering, 10s) ................................................. 300°C

NOTE: (1) Short-circuit to ground, one amplifier per package.

PACKAGE SPECIFIED

DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER

(1)

MEDIA

Single

OPA234EA MSOP-8 Surface-Mount 337 –40°C to +85°C A34

(2)

OPA234EA/250 Tape and Reel

"""""OPA234EA/2K5 Tape and Reel

OPA234E MSOP-8 Surface-Mount 337 –40°C to +85°C A34

(2)

OPA234E/250 Tape and Reel

"""""OPA234E/2K5 Tape and Reel

OPA234PA Plastic DIP-8 006 –40°C to +85°C OPA234PA OPA234PA Rails
OPA234P

"""OPA234P OPA234P Rails

OPA234UA SO-8 Surface-Mount 182 –40°C to +85°C OPA234UA OPA234UA Rails
OPA234U

"""OPA234U OPA234U Rails

Dual

OPA2234PA Plastic DIP-8 006 –40°C to +85°C OPA2234PA OPA2234PA Rails
OPA2234P

"""OPA2234P OPA2234P Rails

OPA2234UA SO-8 Surface-Mount 182 –40°C to +85°C OPA2234UA OPA2234UA Rails
OPA2234U

"""OPA2234U OPA2234U Rails

Quad

OPA4234PA Plastic DIP-8 006 –40°C to +85°C OPA4234PA OPA4234PA Rails
OPA4234P

"""OPA4234P OPA4234P Rails

OPA4234UA SO-8 Surface-Mount 182 –40°C to +85°C OPA4234UA OPA4234UA Rails
OPA4234U

"""OPA4234U OPA4234U Rails

NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces
of “OPA234E//2K5” will get a single 2500-piece Tape and Reel. (2) The grade will be marked on the Reel.

PACKAGE/ORDERING INFORMATION

6

®

OPA234, 2234, 4234

INPUT NOISE AND CURRENT NOISE

SPECTRAL DENSITY vs FREQUENCY

1

1k

100

10

Voltage Noise (nV/√Hz)

Current Noise (fA/√Hz)

Frequency (Hz)

10 100 1k 10k 100k

Current Noise

Voltage Noise

TYPICAL PERFORMANCE CURVES

At TA = +25°C and RL = 10kΩ unless otherwise noted.

INPUT BIAS CURRENT

vs INPUT COMMON-MODE VOLTAGE

Common-Mode Voltage (V)

Input Bias Current (nA)

–17

–16

–15

–14

–13

–12

–11

–10

–15 –10 –5 0 5 10 15

VS = +5V

V

S

= +2.7V

VS = ±15V

INPUT BIAS AND INPUT OFFSET CURRENT

vs TEMPERATURE

Ambient Temperature (°C)

Input Bias, Input Offset Current (nA)

–20

–15

–10

–5

0

+5

–75 –50 –25 0 25 50 75 100 125

VS = +2.7V, +5V

I

OS

VS = ±15V

I

B

OPEN-LOOP GAIN/PHASE vs FREQUENCY

0.1

140
120
100

80
60
40
20

0

–20

0
–30
–60
–90
–120
–150
–180

Voltage Gain (dB)

Phase (°)

Frequency (Hz)

1 10 100 1k 10k 100k 1M

CL = 100pF

G

φ

VO = 0.25V

VS = +5V

±15V

VO =

V

S

2

VS = +2.7V

CMR

+PSR

POWER SUPPLY AND COMMON-MODE REJECTION

vs FREQUENCY

Frequency (Hz)

PSR, CMR (dB)

120
110
100

90
80
70
60
50
40
30
20
10

0

10 100 1k 10k 100k 1M

–PSR

VS = +2.7V, +5V
or ±15V
V

S

= +2.7V or +5V

V

S

= ±15V

CHANNEL SEPARATION vs FREQUENCY

Frequency (Hz)

Channel Separation (dB)

160

140

120

100

80

10 100 1k 10k 100k

Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.

RL = 10kΩ

7

®

OPA234, 2234, 4234

TYPICAL PERFORMANCE CURVES (Cont.)

At TA = +25°C and RL = 10kΩ unless otherwise noted.

OFFSET VOLTAGE

PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage (µV)

0

25

255075

125

100

150

175

0.3%

0.1%

200

200

175

150

125

100

75

50

25

20

15

10

5

0

V

S

= +2.7V, +5V

Typical production
distribution of packaged
units. Single, dual, and
quad units included.

0.1%

OFFSET VOLTAGE

PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage (µV)

0

100

200

300

400

500

–500

–400

–300

–200

–100

30

25

20

15

10

5

0

VS = ±15V

Typical production
distribution of packaged
units. Single, dual,
and quad units included.

0.2%

0.3%

0.7%

0.1%

0.5%

OFFSET VOLTAGE DRIFT

PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage Drift (µV/°C)

3

3.5

4

4.5

5

0.5

1

1.5

2

2.5

35

30

25

20

15

10

5

0

0.1%

0.1%

0.2%

0.5%

0.3%

VS = +5V

Typical production
distribution of packaged
units. Single, dual,
and quad units included.

OFFSET VOLTAGE DRIFT

PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage Drift (µV/°C)

30

25

20

15

10

5

0

0.5

1.5

213

3.5

2.5

4

4.555.566.5

7

8

7.5

VS = ±15V

Typical production
distribution of packaged
units. Single, dual,
and quad units included.

0.1% 0.1%0.1%

0.1%

0.2%

0.4%

0.3%

OFFSET VOLTAGE DRIFT

PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage Drift (µV/°C)

3

3.5

4

4.5

5

0.5

1

1.5

2

2.5

35

30

25

20

15

10

5

0

0.1% 0.1%0.2% 0.1%

0.3%

VS = +2.7V

Typical production
distribution of packaged
units. Single, dual,
and quad units included.

AOL, CMR, PSR vs TEMPERATURE

Ambient Temperature (°C)

A

OL

, CMR, PSR (dB)

140
130
120
110
100

90
80
70
60

–75 –50 –25 0 25 50 75 100 125

CMR

PSR

VCM = (V–) –0.02V to (V+) –1V

A

OL

VS = +2.7V
V

S

= +5V

V

S

= ±15V

8

®

OPA234, 2234, 4234

TYPICAL PERFORMANCE CURVES (Cont.)

At TA = +25°C and RL = 10kΩ unless otherwise noted.

LARGE-SIGNAL STEP RESPONSE

G = 1, C

L

= 100pF, VS = +5V

1V/div

10µs/div

SMALL-SIGNAL STEP RESPONSE

G = 1, C

L

= 10,000pF, VS = +5V

20mV/div

20µs/div

OUTPUT VOLTAGE SWING vs OUTPUT CURRENT

V+

(V+) –0.5

(V+) –1

(V+) –1.5

(V+) –2

(V+) –2.5

(V+) –3
(V–) +3

(V–) +2.5

(V–) +2

(V–) +1.5

(V–) +1

(V–) +0.5

V–

0 ±5 ±10

125°C

85°C

25°C

±15

Output Current (mA)

Output Voltage Swing (V)

–55°C

–55°C

–40°C

25°C

85°C

125°C

–40°C

High output current may
not be available at low
supply voltages due to
output swing limitations.

SMALL-SIGNAL OVERSHOOT

vs LOAD CAPACITANCE

70

60

50

40

30

20

10

0

10pF 100pF 1nF 10nF 100nF

Load Capacitance

Overshoot (%)

G = –1,

G = +2

G = +1,

V

S

= +2.7, +5V

G = +1,

V

S

= ±15V

G = ±10

G = –2

VO = 100mVp-p

SMALL-SIGNAL STEP RESPONSE

G = 1, C

L

= 100pF, VS = +5V

2µs/div

20mV/div

SETTLING TIME vs CLOSED-LOOP GAIN

Gain (V/V)

Settling Time (µs)

1000

100

10

1

±1 ±10 ±100

VS = ±15V,

10V Step

VS = +2.7V,

1V Step

CL = 100pF

0.1%

0.01%

VS = +5V,

3V Step

9

®

OPA234, 2234, 4234

QUIESCENT CURRENT AND SHORT-CIRCUIT CURRENT

vs TEMPERATURE

Temperature (°C)

Quiescent Current (µA)

525

450

375

300

225

150

75

0

Short-Circuit Current (mA)

70

60

50

40

30

20

10

0

–75 –50 –25 0 25 50 75 100 125

±I

SC

±I

Q

VS = +2.7V
V

S

= +5V

V

S

= +2.7V or +5V

V

S

= ±15V

APPLICATIONS INFORMATION

OPA234 series op amps are unity-gain stable and suitable
for a wide range of general-purpose applications. Power
supply pins should be bypassed with 10nF ceramic capaci­tors.

OPERATING VOLTAGE

OPA234 series op amps operate from single (+2.7V to
+36V) or dual (±1.35V to ±18V) supplies with excellent
performance. Specifications are production tested with
+2.7V, +5V, and ±15V supplies. Most behavior remains
unchanged throughout the full operating voltage range.
Parameters which vary significantly with operating volt­age are shown in typical performance curves.

OFFSET VOLTAGE TRIM

Offset voltage of OPA234 series amplifiers is laser trimmed
and usually requires no user adjustment. The OPA234
(single op amp version) provides offset voltage trim con­nections on pins 1 and 5. Offset voltage can be adjusted by
connecting a potentiometer as shown in Figure 1. This
adjustment should be used only to null the offset of the op
amp, not to adjust system offset or offset produced by the
signal source. Nulling offset could degrade the offset drift
behavior of the op amp. While it is not possible to predict
the exact change in drift, the effect is usually small.

FIGURE 1. OPA234 Offset Voltage Trim Circuit.

V+

V–

100kΩ

OPA234 single op amp only.
Use offset adjust pins only to null
offset voltage of op amp—see text.

Trim Range: ±4mV typ
(V–) = 0V for single supply operation.

OPA234

6

7

5

4

3

2

1

10nF

10nF

TYPICAL PERFORMANCE CURVES (Cont.)

At TA = +25°C and RL = 10kΩ unless otherwise noted.

MAXIMUM OUTPUT VOLTAGE

vs FREQUENCY

100k

Frequency (Hz)

1k

10k

30

25

20

15

10

5

0

Output Voltage (Vp-p)

VS = ±2.7V

VS = +5V

Maximum output voltage
without slew-rate induced
distortion

VS = ±15V