OP

A2320

OP

A2320S

OP

A320

OP

A2320

OPA320, OPA2320

OPA320S, OPA2320S

www.ti.com

SBOS513D

– AUGUST 2010 – REVISED NOVEMBER 2011

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: 150μV (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

•

Low Noise: 7nV/

√Hz at 10kHz

high-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

•

OPA320S, OPA2320S:

common-mode rejection ratio (CMRR) of typically

114dB

over

the

full

input

range.

The

input

•

Unity-Gain Stable

common-mode range extends 100mV beyond the

negative and positive supply rails. The output voltage

•

Small Packages:

typically swings within 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

•

Programmable Logic Controllers (PLCs)

SOT23-5 package; the OPA320S shut-down single

version is available in an SOT23-6 package. The dual

•

Motor Control Loops

OPA2320 is offered in SO-8, MSOP-8, and DFN-8

•

Communications

packages, and the OPA2320S (dual with shut-down)

•

Input/Output ADC/DAC Buffers

in an MSOP-10 package.

•

Active Filters

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

© 2010–2011, 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.