PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

APPLICATIONS

q TRANSDUCER APPLICATIONS

q TEMPERATURE MEASUREMENT

q ELECTRONIC SCALES

q MEDICAL INSTRUMENTATION

q BATTERY-POWERED INSTRUMENTS

q HANDHELD TEST EQUIPMENT

0.05

CMOS OPERATIONAL AMPLIFIERS

Zerø-Drift Series

FEATURES

q LOW OFFSET VOLTAGE: 5

µV (max)

q ZERO DRIFT: 0.05

q QUIESCENT CURRENT: 285

q SINGLE-SUPPLY OPERATION

q SINGLE AND DUAL VERSIONS

q SHUTDOWN

DESCRIPTION

The OPA334 and OPA335 series of CMOS operational

amplifiers use auto-zeroing techniques to simultaneously

provide very low offset voltage (5

µV max), and near-zero drift

over time and temperature. These miniature, high-precision,

low quiescent current amplifiers offer high input impedance

and rail-to-rail output swing. Single or dual supplies as low as

+2.7V (

±1.35V) and up to +5.5V (±2.75V) may be used.

These op amps are optimized for low-voltage, single-supply

operation.

The OPA334 family includes a shutdown mode. Under logic

control, the amplifiers can be switched from normal operation

to a standby current of 2

µA. When the Enable pin is con-

nected high, the amplifier is active. Connecting Enable low

disables the amplifier, and places the output in a high-

impedance state.

The OPA334 (single version with shutdown) comes in

MicroSIZE SOT23-6. The OPA335 (single version without

shutdown) is available in SOT23-5, and SO-8. The OPA2334

(dual version with shutdown) comes in

MicroSIZE MSOP-10.

The OPA2335 (dual version without shutdown) is offered in

the MSOP-8 and SO-8 packages. All versions are specified

for operation from –40

°C to +125°C.

OPA334

OPA2334

OPA335

OPA2335

SBOS245D – JUNE 2002 – REVISED JULY 2003

Copyright © 2002-2003, Texas Instruments Incorporated

OFFSET VOLTAGE PRODUCTION DISTRIBUTION

Offset Voltage (

µV)

OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION

Offset Voltage Drift (

µV/°C)

Absolute Value;

Centered Around Zero

OPA2

334

OPA3

35

OPA2

335

OPA2

335

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