LMC660

CMOS Quad Operational Amplifier

General Description

The LMC660 CMOS Quad operational amplifier is ideal for

operation from a single supply. It operates from +5V to

+15.5V and features rail-to-rail output swing in addition to an

input common-mode range that includes ground. Perfor-

mance limitations that have plagued CMOS amplifiers in the

past are not a problem with this design. Input V

broadband noise as well as voltage gain into realistic loads

(2 k

Ω and 600Ω) are all equal to or better than widely

accepted bipolar equivalents.

This chip is built with National’s advanced Double-Poly

Silicon-Gate CMOS process.

See the LMC662 datasheet for a dual CMOS operational

amplifier with these same features.

Features

n

Rail-to-rail output swing

n

Specified for 2 k

Ω and 600Ω loads

n

High voltage gain:

126 dB

n

Low input offset voltage:

3 mV

n

Low offset voltage drift:

1.3 µV/˚C

n

Ultra low input bias current:

2 fA

n

Input common-mode range includes V

−

n

Operating range from +5V to +15.5V supply

n

I

+

n

Low distortion:

0.01% at 10 kHz

n

Slew rate:

1.1 V/µs

Applications

n

High-impedance buffer or preamplifier

n

Precision current-to-voltage converter

n

Long-term integrator

n

Sample-and-Hold circuit

n

Peak detector

n

Medical instrumentation

n

Industrial controls

n

Automotive sensors

Connection Diagram

14-Pin SOIC/MDIP

00876701

LMC660 Circuit Topology (Each Amplifier)

00876704

June 2006

© 2006 National Semiconductor Corporation

DS008767

www.national.com