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.