REV. B

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a

OP470

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

Very Low Noise Quad

Operational Amplifier

FEATURES

Very Low-Noise, 5 nV/

÷Hz @ 1 kHz Max

Excellent Input Offset Voltage, 0.4 mV Max

Low Offset Voltage Drift, 2

V/ C Max

Very High Gain, 1000 V/mV Min

Outstanding CMR, 110 dB Min

Slew Rate, 2 V/ s Typ

Gain-Bandwidth Product, 6 MHz Typ

Industry Standard Quad Pinouts

Available in Die Form

GENERAL DESCRIPTION

The OP470 is a high-performance monolithic quad operational

amplifier with exceptionally low voltage noise, 5 nV/

÷Hz at

1 kHz max, offering comparable performance to ADI’s industry

standard OP27.

The OP470 features an input offset voltage below 0.4 mV,

excellent for a quad op amp, and an offset drift under 2

mV/∞C,

guaranteed over the full military temperature range. Open loop

gain of the OP470 is over 1,000,000 into a 10 k

W load ensuring

excellent gain accuracy and linearity, even in high gain applica-

tions. Input bias current is under 25 nA, which reduces errors

due to signal source resistance. The OP470’s CMR of over 110

dB and PSRR of less than 1.8

mV/V significantly reduce errors

due to ground noise and power supply fluctuations. Power

consumption of the quad OP470 is half that of four OP27s, a

significant advantage for power conscious applications. The

OP470 is unity-gain stable with a gain bandwidth product of

6 MHz and a slew rate of 2 V/

ms.

PIN CONNECTIONS

14-Lead Hermetic DIP

(Y-Suffix)

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

OP470

16-Lead SOIC Package

(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

OP470

–IN A

–IN D

+IN A

+IN D

V+

V–

+IN B

+IN C

–IN B

–IN C

OUT B

OUT C

NC

NC

SIMPLIFIED SCHEMATIC

–IN

+IN

BIAS

V–

V+

The OP470 offers excellent amplifier matching which is impor-

tant for applications such as multiple gain blocks, low noise

instrumentation amplifiers, quad buffers, and low noise active

filters.

The OP470 conforms to the industry standard 14-lead DIP

pinout. It is pin compatible with the LM148/149, HA4741,

HA5104, and RM4156 quad op amps and can be used to up-

grade systems using these devices.

For higher speed applications, the OP471, with a slew rate of 8

V/

ms, is recommended.