192kHz Stereo Asynchronous

Sample Rate Converters

DESCRIPTION

The SRC4192 and SRC4193 are asynchronous sample rate

converters designed for professional and broadcast audio

applications. The SRC4192 and SRC4193 combine a wide

input-to-output sampling ratio with outstanding dynamic range

and ultra low distortion. Input and output serial ports support

standard audio formats, as well as a Time Division Multi-

plexed (TDM) mode. Flexible audio interfaces allow the

SRC4192 and SRC4193 to connect to a wide range of audio

data converters, digital audio receivers and transmitters, and

digital signal processors.

The SRC4192 is a standalone pin programmed device, with

control pins for mode, data format, mute, bypass, and low

group delay functions. The SRC4193 is a software-controlled

device featuring a serial peripheral interface (SPI) port, which

is utilized to program all functions via internal control registers.

The SRC4192 and SRC4193 may be operated from a single

operates over the +1.65V to +3.6V supply range, allowing

greater flexibility when interfacing to current and future gen-

eration signal processors and logic devices. Both the

SRC4192 and SRC4193 are available in a 28-lead SSOP

package.

FEATURES

q AUTOMATIC SENSING OF THE INPUT-TO-

OUTPUT SAMPLING RATIO

q WIDE INPUT-TO-OUTPUT SAMPLING RANGE:

16:1 to 1:16

q SUPPORTS INPUT & OUTPUT SAMPLING

RATES UP TO 212kHz

q DYNAMIC RANGE: 144dB (-60dbFS input,

q THD+N: -140dB (0dbFS input, BW = 20Hz to

q ATTENUATES SAMPLING AND REFERENCE

CLOCK JITTER

q HIGH PERFORMANCE, LINEAR PHASE

DIGITAL FILTERING WITH BETTER THAN

140dB OF STOP BAND ATTENUATION

q FLEXIBLE AUDIO SERIAL PORTS:

Master or Slave Mode Operation

TDM Data Formats

Supports 16, 18, 20, or 24-Bit Audio Data

TDM Mode allows daisy chaining of up to eight

devices

q SUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND

OUTPUT DATA

All output data is dithered from the internal

28-Bit data path

q LOW GROUP DELAY OPTION FOR INTERPO-

LATION FILTER

q DIRECT DOWNSAMPLING OPTION FOR

DECIMATION FILTER (SRC4193 ONLY)

q SPI PORT PROVIDES ACCESS TO INTERNAL

CONTROL REGISTERS (SRC4193 ONLY)

q SOFT MUTE FUNCTION

q BYPASS MODE

q PROGRAMMABLE DIGITAL OUTPUT

ATTENUATION (SRC4193 ONLY)

256 steps: 0dB to –127.5dB, 0.5dB/step

APPLICATIONS

q DIGITAL MIXING CONSOLES

q DIGITAL AUDIO WORKSTATIONS

q AUDIO DISTRIBUTION SYSTEMS

q BROADCAST STUDIO EQUIPMENT

q HIGH-END A/V RECEIVERS

q GENERAL DIGITAL AUDIO PROCESSING

www.ti.com

PRODUCTION DATA information is 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.

Copyright © 2003, Texas Instruments Incorporated

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.

SBFS022A – JULY 2003

All trademarks are the property of their respective owners.

q POWER DOWN MODE

q OPERATES FROM A SINGLE +3.3 VOLT

POWER SUPPLY

q SMALL 28-LEAD SSOP PACKAGE

q PIN COMPATIBLE WITH THE AD1896

(1) Patents Pending.

(2) Refer to the Applications Information section of this data sheet for details.

SRC4

192

SRC4

193