OP

A1642

OP

A1641

OP

A1644

Burr-BrownAudio

IN-

Pre-OutputDriver

OUT

IN+

V+

V-

OPA1641

OPA1642

OPA1644

www.ti.com

SBOS484A – DECEMBER 2009 – REVISED APRIL 2010

™ High-Performance, JFET-Input

AUDIO OPERATIONAL AMPLIFIERS

Check for Samples: OPA1641, OPA1642, OPA1644

1

FEATURES

DESCRIPTION

234

•

SUPERIOR SOUND QUALITY

The

OPA1641

(single),

OPA1642

(dual),

and

OPA1644 (quad) series are JFET-input, ultralow

•

TRUE JFET INPUT OP AMP

distortion,

low-noise

operational

amplifiers

fully

WITH LOW INPUT BIAS CURRENT

specified for audio applications.

•

LOW NOISE: 5.1nV/

√Hz at 1kHz

The OPA1641, OPA1642, and OPA1644 rail-to-rail

•

ULTRALOW DISTORTION: 0.00005% at 1kHz

output swing allows increased headroom, making

•

HIGH SLEW RATE: 20V/ms

these devices ideal for use in any audio circuit.

•

UNITY GAIN STABLE

Features

include

5.1nV/

√Hz noise, low THD+N

(0.00005%), a low input bias current of 2pA, and low

•

NO PHASE REVERSAL

quiescent current of 1.8mA per channel.

•

LOW QUIESCENT CURRENT:

These devices operate over a very wide supply

1.8mA per Channel

voltage range of ±2.25V to ±18V. The OPA1641,

•

RAIL-TO-RAIL OUTPUT

OPA1642, and OPA1644 series of op amps are

•

WIDE SUPPLY RANGE: ±2.25V to ±18V

unity-gain stable and provide excellent dynamic

•

SINGLE, DUAL, AND QUAD VERSIONS

behavior over a wide range of load conditions.

AVAILABLE

The dual and quad versions feature completely

independent

circuitry

for

lowest

crosstalk

and

APPLICATIONS

freedom from interactions between channels, even

•

PROFESSIONAL AUDIO EQUIPMENT

when overdriven or overloaded.

•

ANALOG AND DIGITAL MIXING CONSOLES

The

OPA1641,

OPA1642,

and

OPA1644

are

•

BROADCAST STUDIO EQUIPMENT

•

HIGH-END A/V RECEIVERS

•

HIGH-END BLU-RAY™ PLAYERS

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

SoundPlus is a trademark of Texas Instruments Incorporated.

3

BLU-RAY is a trademark of Blu-Ray Disc Assocation.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009–2010, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.