REV. A

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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.

a

OP471

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2002

14-Lead

Hermetic Dip

(Y-Suffix)

14

13

12

11

10

9

8

1

2

3

4

5

6

7

OUT A

–IN A

+IN A

V+

+IN B

–IN B

OUT B

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

OP471

16-Lead SOIC

(S-Suffix)

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

NC = NO CONNECT

OUT A

OUT D

OP471

–IN A

–IN D

+IN A

+IN D

V+

V–

+IN B

+IN C

–IN B

–IN C

OUT B

OUT C

NC

NC

High Speed, Low Noise Quad

Operational Amplifier

–IN

+IN

BIAS

V–

V+

OUT

Figure 1. Simplified Schematic

FEATURES

Excellent Speed: 8 V/ s Typ

Low Noise: 11 nV/

÷Hz @ 1 kHz Max

Unity-Gain Stable

High Gain Bandwidth: 6.5 MHz Typ

Low Input Offset Voltage: 0.8 mV Max

Low Offset Voltage Drift: 4

V/ C Max

High Gain: 500 V/mV Min

Outstanding CMR: 105 dB Min

Industry Standard Quad Pinouts

GENERAL DESCRIPTION

The OP471 is a monolithic quad op amp featuring low noise,

11 nV/

÷Hz Max @ 1 kHz, excellent speed, 8 V/ms typical, a

gain bandwidth of 6.5 MHz, and unity-gain stability.

The OP471 has an input offset voltage under 0.8 mV and an

input offset voltage drift below 4

mV/∞C, guaranteed over the full

military temperature range. Open-loop gain of the OP471 is over

500,000 into a 10 k

W load ensuring outstanding gain accuracy

and linearity. The input bias current is under 25 nA limiting

errors due to signal source resistance. The OP471’s CMR of

over 105 dB and PSRR of under 5.6

mV/V significantly reduce

errors caused by ground noise and power supply fluctuations.

The OP471 offers excellent amplifier matching which is important

for applications such as multiple gain blocks, low-noise instru-

mentation amplifiers, quad buffers and low-noise active filters.

The OP471 conforms to the industry standard 14-lead DIP

pinout. It is pin-compatible with the LM148/LM149, HA4741,

RM4156, MC33074, TL084 and TL074 quad op amps and can

be used to upgrade systems using these devices.

For applications requiring even lower voltage noise the OP470

with a voltage density of 5 nV/

÷Hz Max @ 1 kHz is recommended.

PIN CONFIGURATIONS

14-Lead

Plastic Dip

(P-Suffix)

14

13

12

11

10

9

8

1

2

3

4

5

6

7

OUT A

–IN A

+IN A

V+

+IN B

–IN B

OUT B

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

OP471