OP

A2320

OP

A2320S

OP

A320

OP

A2320

OPA320, OPA2320

OPA320S, OPA2320S

www.ti.com

SBOS513E – AUGUST 2010 – REVISED JUNE 2013

Precision, 20MHz, 0.9pA, Low-Noise, RRIO,

CMOS Operational Amplifier with Shutdown

Check for Samples: OPA320, OPA2320, OPA320S, OPA2320S

1

FEATURES

DESCRIPTION

The OPA320 (single) and OPA2320 (dual) are a new

23

•

Precision with Zero-Crossover Distortion:

generation

of

precision,

low-voltage

CMOS

–

Low Offset Voltage: 150

μV (max)

operational amplifiers optimized for very low noise

–

High CMRR: 114dB

and wide bandwidth while operating on a low

quiescent current of only 1.45mA.

–

Rail-to-Rail I/O

•

Low Input Bias Current: 0.9pA (max)

The OPA320 series is ideal for low-power, single-

supply applications. Low-noise (7nV/

√Hz) and high-

•

Low Noise: 7nV/

√Hz at 10kHz

speed operation also make them well-suited for

•

Wide Bandwidth: 20MHz

driving sampling analog-to-digital converters (ADCs).

•

Slew Rate: 10V/

μs

Other applications include signal conditioning and

sensor amplification.

•

Quiescent Current: 1.45mA/ch

•

Single-Supply Voltage Range: 1.8V to 5.5V

The OPA320 features a linear input stage with zero-

crossover distortion that delivers excellent common-

•

OPA320S, OPA2320S:

mode rejection ratio (CMRR) of typically 114dB over

–

the full input range. The input common-mode range

•

Unity-Gain Stable

extends 100mV beyond the negative and positive

supply rails. The output voltage typically swings within

•

Small Packages:

10mV of the rails.

–

SOT23, MSOP, DFN

In addition, the OPAx320 have a wide supply voltage

range from 1.8V to 5.5V with excellent PSRR (106dB)

APPLICATIONS

over the entire supply range, making them suitable

•

High-Z Sensor Signal Conditioning

for precision, low-power applications that run directly

•

Transimpedance Amplifiers

from batteries without regulation.

•

Test and Measurement Equipment

The OPA320 (single version) is available in a SOT23-

•

Programmable Logic Controllers (PLCs)

5 package; the OPA320S shut-down single version is

available in an SOT23-6 package. The dual OPA2320

•

Motor Control Loops

is offered in SO-8, MSOP-8, and DFN-8 packages,

•

Communications

and the OPA2320S (dual with shut-down) in an

•

Input/Output ADC/DAC Buffers

MSOP-10 package.

•

Active Filters

1

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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 © 2010–2013, 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.