DRV632

www.ti.com

SLOS681A – JANUARY 2011 – REVISED JULY 2013

DirectPath™, 2-VRMS Audio Line Driver With Adjustable Gain

Check for Samples: DRV632

1

FEATURES

DESCRIPTION

23

•

Stereo DirectPath™ Audio Line Driver

designed to allow the removal of the output dc-

–

2 Vrms Into 10 k

Ω With 3.3-V Supply

blocking capacitors for reduced component count and

•

Low THD+N < 0.01% at 2 Vrms Into 10 k

Ω

cost. The device is ideal for single-supply electronics

where size and cost are critical design parameters.

•

High SNR, >90 dB

•

600-

Ω Output Load Compliant

Designed

using

TI’s

patented

DirectPath™

•

Differential Input and Single-Ended Output

into a 10-k

Ω load with 3.3-V supply voltage. The

•

Adjustable Gain by External Gain-Setting

device has differential inputs and uses external gain-

Resistors

setting resistors to support a gain range of ±1 V/V to

•

Low DC Offset, <1 mV

±10 V/V, and gain can be configured individually for

each channel. Line outputs have ±8-kV IEC ESD

•

Ground-Referenced Outputs Eliminate DC-

protection, requiring just a simple resistor-capacitor

Blocking Capacitors

ESD protection circuit. The DRV632 has built-in

–

Reduce Board Area

active-mute control for pop-free audio on/off control.

–

Reduce Component Cost

The DRV632 has an external undervoltage detector

that mutes the output when the power supply is

–

Improve THD+N Performance

removed, ensuring a pop-free shutdown.

–

No Degradation of Low-Frequency

Using the DRV632 in audio products can reduce

Response Due to Output Capacitors

component

count

considerably

compared

to

•

Short-Circuit Protection

•

Click- and Pop-Reduction Circuitry

The DRV632 does not require a power supply greater

•

External Undervoltage Mute

require a split-rail power supply. The DRV632

•

Active Mute Control for Pop-Free Audio On/Off

integrates its own charge pump to generate a

Control

negative supply rail that provides a clean, pop-free

•

Space-Saving TSSOP Package

The DRV632 is available in a 14-pin TSSOP.

APPLICATIONS

•

Set-Top Boxes

•

Blu-ray Disc™, DVD Players

•

LCD and PDP TV

•

Mini/Micro Combo Systems

•

Sound Cards

•

Laptops

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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

DirectPath, FilterPro are trademarks of Texas Instruments.

3

Blu-ray Disc is a trademark of Blu-ray Disc Association.

PRODUCTION DATA information is current as of publication date.

Copyright © 2011–2013, 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.