General Description

Maxim’s ICL7650/ICL7653 are chopper-stabilized

amplifiers, ideal for low-level signal processing applica-

tions. Featuring high performance and versatility, these

devices combine low input offset voltage, low input bias

current, wide bandwidth, and exceptionally low drift

over time and temperature. Low offset is achieved

through a nulling scheme that provides continuous

error correction. A nulling amplifier alternately nulls

itself and the main amplifier. The result is an input offset

voltage that is held to a minimum over the entire operat-

ing temperature range.

The ICL7650B/ICL7653B are exact replacements for

Intersil’s ICL7650B/ICL7653B. These devices have a

10µV max offset voltage, a 0.1µV/°C max input offset

voltage temperature coefficient, and a 20pA max bias

current—all specified over the commercial temperature

range.

A 14-pin version is available that can be used with

either an internal or external clock. The 14-pin version

has an output voltage clamp circuit to minimize over-

load recovery time.

Applications

Condition Amplifier

Precision Amplifier

Instrumentation Amplifier

Thermocouples

Thermistors

Strain Gauges

Features

o ICL7650/53 are Improved Second Sources to

ICL7650B/53B

o Lower Supply Current: 2mA

o Low Offset Voltage: 1µV

o No Offset Voltage Trimming Needed

o High-Gain CMRR and PSRR: 120dB min

o Lower Offset Drift with Time and Temperature

o Extended Common-Mode Voltage Range

o Low DC Input Bias Current: 10pA

o Monolithic, Low-Power CMOS Design

Chopper-Stabilized Op Amps

________________________________________________________________ Maxim Integrated Products

1

ICL7650

ICL7653

OUTPUT

INVERTING AMPLIFIER

WITH OPTIONAL CLAMP

INPUT

C

R

C

CLAMP

Typical Operating Circuit

19-0960; Rev 2; 1/00

Pin Configurations appear at end of data sheet.

Ordering Information

PART

ICL7650CSA

ICL7650CSD

ICL7650CPA

0°C to +70°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

8 SO

14 SO

8 Plastic DIP

ICL7650CPD

ICL7650CTV

ICL7650C/D

0°C to +70°C

0°C to +70°C

0°C to +70°C

14 Plastic DIP

8 TO-99

Dice

ICL7650IJA

ICL7650IJD

-20°C to +85°C

-20°C to +85°C

8 CERDIP

14 CERDIP

ICL7650MTV

ICL7650MJD

-55°C to +125°C

-55°C to +125°C

8 CERDIP

14 CERDIP

ICL7650BCSA

ICL7650BCSD

0°C to +70°C

0°C to +70°C

8 SO

14 SO

ICL7650BCPA

ICL7650BCPD

0°C to +70°C

0°C to +70°C

8 Plastic DIP

14 Plastic DIP

ICL7650BCTV

ICL7650BC/D

0°C to +70°C

0°C to +70°C

8 TO-99

Dice

ICL7653CSA

ICL7653CPA

ICL7653CTV

0°C to +70°C

8 SO

ICL7653BCSA

ICL7653BCPA

0°C to +70°C

0°C to +70°C

8 Plastic DIP

8 TO-99

0°C to +70°C

ICL7653IJA

ICL7653MTV

-55°C to +125°C

-20°C to +85°C

8 CERDIP

8 CERDIP

0°C to +70°C

8 SO

8 Plastic DIP

ICL7653BCTV

0°C to +70°C

8 TO-99

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.