SRC4190 - 192kHz Stereo Asynchronous Sample Rate Converters

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.

• 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 f_S Input, BW = 20 Hz to f_S / 2, A-Weighted)
• THD+N: –125 dB (0-dB f_S Input, BW = 20 Hz to f_S / 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 U.S. Patent No. 7,262,716 See for details.