1 Features

1• Automatic Sensing of the Input-to-Output

Sampling Ratio

• Wide Input-to-Output Sampling Range:

16:1 to 1:16

• Supports Input and Output Sampling Rates

up to 212 kHz

• Dynamic Range: 128 dB (–60-dB fS Input,

BW = 20 Hz to fS / 2, A-Weighted)

• THD+N: –125 dB (0-dB fS Input,

BW = 20 Hz to fS / 2)

• Attenuates Sampling and Reference Clock Jitter

• High-Performance, Linear Phase Digital Filtering

• 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

– All Output Data is Dithered from the Internal

28-Bit Data Path

• Low Group Delay Option for Interpolation Filter

• Soft Mute Function

• Bypass Mode

• Power-Down Mode

• Operates from a Single 3.3-V Power Supply

• Small 28-Pin SSOP Package

• Pin Compatible With the SRC4192, AD1895, and

AD1896

2 Applications

• Digital Mixing Consoles

• Digital Audio Workstations

• Audio Distribution Systems

• Broadcast Studio Equipment

• High-End A/V Receivers

• General Digital Audio Processing

3 Description

The SRC4190 device is an asynchronous sample

rate converter designed for professional and

broadcast audio applications. The SRC4190

combines a wide input-to-output sampling ratio with

outstanding dynamic range and 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

SRC4190 to connect to a wide range of audio data

converters, digital audio receivers and transmitters,

and digital signal processors.

The SRC4190 is a standalone pin-programmed

device, with control pins for mode, data format, mute,

bypass, and low group delay functions.

The SRC4190 may be operated from a single 3.3-V

power supply. A separate digital I/O supply (VIO)

operates with a 1.65-V to 3.6-V supply, allowing

greater flexibility when interfacing to current and

future generation signal processors and logic devices.

The SRC4190 is available in a 28-pin SSOP

package.