Sample Rate Converter 28-Pin SSOP T/R

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 Multiplexed (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 +3.3V power supply. A separate digital I/O supply (VIO) operates over the +1.65V to +3.6V supply range, allowing greater flexibility when interfacing to current and future generation signal processors and logic devices. Both the SRC4192 and SRC4193 are available in a 28-lead SSOP package.

AUTOMATIC SENSING OF THE INPUT-TO-OUTPUT SAMPLING RATIO

WIDE INPUT-TO-OUTPUT SAMPLING RANGE: 16:1 to 1:16

SUPPORTS INPUT & OUTPUT SAMPLING RATES UP TO 212kHz

DYNAMIC RANGE: 144dB (–60dbFS input, BW = 20Hz to f_s/2, A-Weighted)

THD+N: –140dB (0dbFS input, BW =20Hz to f_s/2)

ATTENUATES SAMPLING AND REFERENCE CLOCK JITTER

HIGH PERFORMANCE, LINEAR PHASE DIGITAL FILTERING WITH BETTER THAN 140dB OF STOP BAND ATTENUATION

FLEXIBLE AUDIO SERIAL PORTS:
Master or Slave Mode Operation
Supports I²S, Left Justified, Right Justified, and TDM Data Formats
Supports 16, 18, 20, or 24-Bit Audio Data
TDM Mode allows daisy chaining of up to eight devices

SUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND OUTPUT DATA
All output data is dithered from the internal 28-Bit data path

LOW GROUP DELAY OPTION FOR INTERPOLATION FILTER

DIRECT DOWNSAMPLING OPTION FOR DECIMATION FILTER (SRC4193 ONLY)

SPI PORT PROVIDES ACCESS TO INTERNAL CONTROL REGISTERS (SRC4193 ONLY)

SOFT MUTE FUNCTION

BYPASS MODE

PROGRAMMABLE DIGITAL OUTPUT ATTENUATION (SRC4193 ONLY)
256 steps:0dB to –127.5dB,0.5dB/step

POWER DOWN MODE

OPERATES FROM A SINGLE +3.3 VOLT POWER SUPPLY

SMALL 28-LEAD SSOP PACKAGE

PIN COMPATIBLE WITH THE AD1896 (SRC4192 ONLY)⁽²⁾

APPLICATIONS

• DIGITAL MIXING CONSOLES
• DIGITAL AUDIO WORKSTATIONS
• AUDIO DISTRIBUTION SYSTEMS
• BROADCAST STUDIO EQUIPMENT
• HIGH-END A/V RECEIVERS
• GENERAL DIGITAL AUDIO PROCESSING