REV. C

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a

PM1012

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

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1998

Low Power Precision

Operational Amplifier

FEATURES

Low Supply Current: 600

A Max

Very Low Offset: 35

V Max

Low Drift: 1.5

V/ C Max

Very Low Bias Current

25 C: 100 pA Max

Low Noise: 0.5

V p-p Typ

High Common-Mode Rejection: 114 dB Min

GENERAL DESCRIPTION

The PM1012 is a general purpose, precision operational ampli-

fier. Offering several performance enhancements over industry-

standard precision op amps such as the OP07, the PM1012

requires less than 1/6 the supply current. These enhancements

include exceptionally low bias currents of only

±80 pA, typical,

over the full military temperature range, and 132 dB of com-

mon-mode rejection and power-supply rejection. The PM1012’s

low offset voltage of 35

µV maximum frees the user from exter-

nal nulling in most circuits.

An open-loop gain of two million into a 10 k

Ω load ensures that

excellent linearity is maintained even in high gain configura-

tions, and 5 mA of output current allows 2 k

Ω loads to be

driven with an open-loop gain of one million. The PM1012

offers low noise, especially for a low power amplifier—only

17 nV/

√Hz at 10 Hz. Exceptionally low current noise minimizes

PIN CONNECTIONS

Plastic Mini-DIP (P Suffix)

8-Lead SO (S Suffix)

8

7

6

5

1

2

3

4

NULL

–IN

+IN

NULL

V+

OUT

OVER

COMP

V–

PM1012

noise contributions when high source impedances are used. The

PM1012 may be overcompensated, using Pin 5 to limit the

amplifier’s bandwidth, further reducing system noise and in-

creasing stability with large capacitive loads.

The PM1012 conforms to the OP07 pinout with nulling through

Pins 1 and 8 to the positive supply. It offers an upgrade to the

OP07 in sockets where reduced power dissipation or low bias

currents are attractive. It may also be used as an upgrade from

the OP12, OP05 and 725 type op amps. The PM1012 may

replace 741 type op amps by removing the nulling potentiom-

eter, if used.