OPA322, OPA322S

OPA2322, OPA2322S

OPA4322, OPA4322S

www.ti.com

SBOS538A

– JANUARY 2011 – REVISED MAY 2011

20-MHz, Low-Noise, 1.8-V, RRI/O, CMOS Operational Amplifier with Shutdown

Check for Samples: OPA322, OPA322S, OPA2322, OPA2322S, OPA4322, OPA4322S

1

FEATURES

DESCRIPTION

The OPA322 series consists of single, dual, and

23

•

Gain Bandwidth: 20 MHz

quad-channel CMOS operational amplifiers featuring

•

Low Noise: 8.5 nV/

√Hz at 1 kHz

low noise and rail-to-rail inputs/outputs optimized for

•

Slew Rate: 10 V/

μs

low-power, single-supply applications. Specified over

a wide supply range of 1.8 V to 5.5 V, the low

•

Low THD+N: 0.0005%

quiescent current of only 1.5 mA per channel make

•

Rail-to-Rail I/O

these

devices

well-suited

for

power-sensitive

•

Offset Voltage: 2 mV (max)

applications.

•

Supply Voltage: 1.8 V to 5.5 V

The combination of very low noise (8.5 nV/

√Hz at

•

Supply Current: 1.5 mA/ch

1 kHz), high gain-bandwidth (20 MHz), and fast slew

rate (10 V/

μs) make the OPA322 family ideal for a

– Shutdown: 0.1 μA/ch

wide

range

of

applications,

including

signal

•

Unity-Gain Stable

conditioning and sensor amplification requiring high

•

Small Packages:

gains. Featuring low THD+N, the OPA322 series is

also

excellent

for

consumer

audio

applications,

– SOT23, DFN, MSOP, TSSOP

particularly for single-supply systems.

APPLICATIONS

The OPAx322S models include a shutdown mode

allowing the amplifiers to be switched from normal

•

Sensor Signal Conditioning

operation to a standby current that is typically less

•

Consumer Audio

than 0.1

μA.

•

Multi-Pole Active Filters

The OPA322 (single version) is available in SOT23-5

•

Control-Loop Amplifiers

and SOT23-6, while the OPA2322 (dual version) is

•

Communications

offered in MSOP-8, MSOP-10, SO-8, and DFN-8

packages. The quad versions OPA4322 come in

•

Security

TSSOP-14 and TSSOP-16 packages. All versions are

•

Scanners

specified for operation from

–40°C to +125°C.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

FilterPro is a trademark of Texas Instruments Incorporated.

3

All other trademarks are the property of their respective owners.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright

© 2011, Texas Instruments Incorporated

PRODUCTION DATA information 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.