Analog Devices OP271 a Datasheet

8

7

6

5

1

2

3

4

OUT A

–IN A

V+

OUT B

–IN B+IN A

+IN B

V–

+–+

–

B

A

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

NC = NO CONNECT

NC

–IN A

NC

+IN A

NC

NC

OUT B

NC

–IN B

NC

OUT A

V+

V–

NC

+IN B

NC

High-Speed, Dual

a

FEATURES

m

Excellent Speed: 8.5 V/
Fast Settling (0.01%): 2
Unity-Gain Stable
High-Gain Bandwidth: 5 MHz Typ
Low Input Offset Voltage: 200
Low Offset Voltage Drift: 21
High Gain: 400 V/mV Min
Outstanding CMR: 106 dB Min
Industry Standard 8-Pin Dual Pinout
Available in Die Form

GENERAL DESCRIPTION

The OP271 is a unity-gain stable monolithic dual op amp
featuring excellent speed, 8.5 V/ms typical, and fast settling
time, 2 ms typical to 0. 01%. The OP271 has a gain bandwidth
of 5 MHz with a high phase margin of 62∞.

Input offset voltage of the OP271 is under 200 mV with input
offset voltage drift below 2 mV/∞C, guaranteed over the full
military temperature range. Open-loop gain exceeds 400,000
into a 10 kW load ensuring outstanding gain accuracy and
linearity. The input bias current is under 20 nA limiting
errors due to source resistance. The OP271’s outstanding
CMR, over 106 dB, and low PSRR, under 5.6 mV/V, reduce
errors caused by ground noise and power supply fluctuations.
In addition, the OP27l exhibits high CMR and PSRR over a
wide frequency range, further improving system accuracy.

s Typ

m

s Typ

m

mV/∞

V Max

C Max

Operational Amplifier

OP271

PIN CONNECTIONS

16-Pin SOL

(S-Suffix)

Epoxy Mini-DIP

(P-Suffix)

8-Pin Hermetic DIP

(Z-Suffix)

+IN–IN

REV. A

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.

Figure 1. Simplified Schematic

(One of the two amplifiers is shown.)

V+

BIAS

OUT

V–

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © Analog Devices, Inc., 2002

OP271–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

(VS = ±15 V, TA = 25∞C, unless otherwise noted.)

OP271A/E OP271F OP271G

Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit

INPUT OFFSET
VOLTAGE V

OS

75 200 150 300 200 400 mV

INPUT OFFSET
CURRENT I

OS

VCM = 0 V 1 10 4 15 7 20 nA

INPUT BIAS
CURRENT I

B

VCM = 0 V 4 20 6 40 12 60 nA

INPUT NOISE
VOLTAGE
DENSITY e

n

LARGE-SIGNAL V
VOLTAGE A

VO

fO = 1 kHz 7.6 7.6 7.6 nV/Hz

= ± 10 V

O

RL = 10 kW 400 650 300 500 250 400 V/mV

GAIN RL = 2 kW 300 500 200 300 175 250 V/mV

INPUT VOLTAGE
RANGE IVR ± 12 ±12.5 ± 12 ±12.5 ± 12 ±12.5 V

OUTPUT
VOLTAGE SWING V

O

R

2 kW±12 ±13 ±12 ±13 ±12 ± 13 V

L ≥

COMMON-MODE
REJECTION CMR V

= ± 12 V 106 120 100 115 90 105 dB

CM

POWER SUPPLY
REJECTION PSRR VS = ± 4.5 V 0.6 3.2 1.8 5.6 2.4 7.0 mV/V
RATIO to ± 18 V

SLEW RATE SR 5.5 8.5 5.5 8.5 5.5 8.5 V/ms

PHASE MARGIN u

m

AV = +1 62 62 62 degrees

SUPPLY CURRENT
(ALL AMPLIFIERS) I

SY

No Load 4 5 6.5 4.5 6.5 4.5 6.5 mA

GAIN
BANDWIDTH
PRODUCT GBW 5 5 5 MHz

CHANNEL CS V

= 20 V

O

125 175 125 175 175 dB

p-p

SEPARATION fO = 10 Hz 125 175 125 175 175 dB

INPUT
CAPACITANCE C

IN

333pF

INPUT
RESISTANCE
DIFFERENTIAL­ MODE R

IN

0.4 0.4 0.4 MW

INPUT
RESISTANCE
COMMON
MODE R

SETTLING TIME t

INCM

S

AV = +1,

20 20 20 GW

10 V Step
to 0.01% 2 2 2 ms

NOTES

1

Guaranteed by CMR test.

2

Guaranteed but not 100% tested.

–2–

REV. A

OP271

ELECTRICAL CHARACTERISTICS

(VS = ±15 V, –55∞C £ TA £ 125∞C for OP271A, unless otherwise noted.)

OP271A

Parameter Symbol Conditions Min Typ Max Unit

INPUT OFFSET VOLTAGE V

OS

115 400 mV

AVERAGE INPUT OFFSET
VOLTAGE DRIFT TCV

INPUT OFFSET CURRENT I

OS

OS

VCM = 0 V 1.5 30 nA

0.4 2 mV/∞C

INPUT BIAS CURRENT IB VCM = 0 V 7 60 nA

LARGE-SIGNAL VOLTAGE A

VO

GAIN R

VO = ± 10 V

= 10 kW 300 600 V/mV

L

RL = 2 kW 200 500 V/mV

INPUT VOLTAGE RANGE

OUTPUT VOLTAGE SWING V

1

IVR ± 12 ±12.5 V

O

RL ≥ 2 kW±12 ±13 V

COMMON-MODE REJECTION CMR VCM = ± 12 V 100 120 dB

POWER SUPPLY REJECTION
RATIO PSRR VS = ± 4.5 V to ±18 V 1.0 5.6 mV/V

SUPPLY CURRENT
(ALL AMPLIFIERS) I

NOTE

1

Guaranteed by CMR test.

SY

No Load 5.3 75 mA

ELECTRICAL CHARACTERISTICS

(VS = ±15 V, –40∞C £ TA £ +85∞C, unless otherwise noted.)

OP271A/E OP271F OP271G

Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit

INPUT OFFSET
VOLTAGE V

OS

100 330 215 560 300 700 mV

AVERAGE INPUT
OFFSET
VOLTAGE DRIFT TCV

OS

0.4 2 1 4 2.0 5 mV/∞C

INPUT OFFSET
CURRENT I

OS

VCM = 0 V 1 30 5 40 15 50 nA

INPUT BIAS
CURRENT I

LARGE-SIGNAL A

B

VO

VOLTAGE GAIN R

VCM = 0 V 6 60 10 70 15 80 nA

VO = ± 10 V

= 10 kW 300 600 200 500 150 400 V/mV

L

RL = 2 kW 200 500 100 400 90 300 V/mV

INPUT VOLTAGE
RANGE

1

IVR ±12 ±12.5 ± 12 ± 12.5 ± 12 ± 12.5 V

OUTPUT
VOLTAGE SWING V

O

RL ≥ 2 kW±12 ± 13 ± 12 ±13 ±12 ± 13 V

COMMON-MODE
REJECTION CMR VCM = ± 12 V 100 120 94 115 90 100 dB

POWER SUPPLY
REJECTION PSRR VS = ± 4.5 V 0.7 5.6 51.8 10 2.0 15 mV/V

RATIO to ± 18 V

SUPPLY CURRENT
(ALL AMPLIFIERS) I

NOTE

1

Guaranteed by CMR test.

SY

No Load 5.2 7.2 5.2 7.2 5.2 7.2 mA

REV. A

–3–

OP271

WARNING!

ESD SENSITIVE DEVICE

(Continued from Page 1)

The OP271 offers outstanding dc and ac matching between chan­nels. This is especially valuable for applications such as multiple
gain blocks, high-speed instrumentation and amplifiers, buffers
and active filters.

The OP271 conforms to the industry standard, 8-pin dual op amp
pinout. It is pin compatible with the TL072, TL082, LF412,
and 1458/1558 dual op amps and can be used to significantly
improve systems using these devices.

For applications requiring lower voltage noise, see the OP270.
For a quad version of the OP271, see the OP471.

ABSOLUTE MAXIMUM RATINGS

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V

Differential Input Voltage
Differential Input Current

2

. . . . . . . . . . . . . . . . . . . . . . ± 1.0 V

2

. . . . . . . . . . . . . . . . . . . . ± 25 mA

1

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . Supply Voltage

Output Short-Circuit Duration . . . . . . . . . . . . . . Continuous

Storage Temperature Range . . . . . . . . . . . . –65∞C to +150∞C

Lead Temperature (Soldering, 60 sec) . . . . . . . . . . . . 300∞C

Junction Temperature (Tj) . . . . . . . . . . . . . –65∞C to +150∞C

Operating Temperature Range

OP271A . . . . . . . . . . . . . . . . . . . . . . . . . . . –55∞C to +125∞C

OP271E, OP271F, OP271G . . . . . . . . . . . –40∞C to +85∞C

Package Type ␪

3

jA

␪

jC

Unit

8-Pin Hermetic DIP (Z) 134 12 ∞C/W
8-Pin Plastic DIP (P) 96 37 ∞C/W
8-Pin SOIC (S) 92 27 ∞C/W

NOTES

1

Absolute maximum ratings apply to packaged parts, unless otherwise noted.

2

The OP271’s inputs are protected by back-to-back diodes. Current limiting

resistors are not used in order to achieve low-noise performance. If differential
voltage exceeds ± 1.0 V, the input current should be limited to ± 25 mA.

3

␪jA is specified for worst case mounting conditions, i.e., ␪

device in socket for CERDIP and P-DIP packages; ␪jA is specified for device
soldered to printed circuit board for SOIC package.

is specified for

jA

ORDERING GUIDE

Package

= 25∞C Operating

T

A

V

Max CERDIP Temperature

OS

(mV) 8-Pin Plastic Range

200 *OP271AZ MIL
200 *OP271EZ XND
300 *OP271FZ XND
400 OP271GP XND
400 *OP271GS XND

*Not for new design, obsolete April 2002.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the OP271 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.

–4–

REV. A