Catalog
4-Channel, Asynchronous Sample Rate Converter
Key Features
• AUTOMATIC SENSING OF INPUT-TO-OUTPUT SAMPLING RATIOWIDE INPUT-TO-OUTPUT SAMPLING RANGE: 16:1 to 1:16SUPPORTS INPUT AND OUTPUT SAMPLING RATES UP TO 212kHzDYNAMIC RANGE: 144dB (–60dbFS Input, BW = 20Hz to fs/2)THD+N: –140dB (0dbFS Input, BW = 20Hz to fs/2)HIGH-PERFORMANCE, LINEAR-PHASE DIGITAL FILTERING WITH BETTER THAN 140dB OF STOP BAND ATTENUATIONFLEXIBLE AUDIO SERIAL PORTS:Master or Slave Mode OperationSupports I2S, Left-Justified, Right-Justified, and TDM Data FormatsTDM Mode Allows Daisy-Chaining of Up to Four DevicesSUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND OUTPUT DATAAll Output Data is Dithered from the Internal 28-Bit Data PathSERIAL PERIPHERAL INTERFACE (SPI)™ PORT SUPPORTS REGISTER READ AND WRITE OPERATIONS IN SOFTWARE MODEBYPASS MODERoutes Input Port Data Directly to the Output PortFOUR GROUP DELAY OPTIONS FOR THE INTERPOLATION FILTERDIRECT DOWNSAMPLING OPTION FOR THE DECIMATION FILTERDIGITAL DE-EMPHASIS FILTERUser-Selectable for 32kHz, 44.1kHz, and 48kHz Sampling RatesSOFT MUTE FUNCTIONPROGRAMMABLE DIGITAL OUTPUT ATTENUATION (SOFTWARE MODE ONLY)256 Steps: 0dB to –127.5dB with 0.5dB StepsINPUT-TO-OUTPUT SAMPLING RATIO READBACK (SOFTWARE MODE ONLY)POWER-DOWN MODESSUPPORTS OPERATION FROM A SINGLE +1.8V or +3.3V POWER SUPPLYAVAILABLE IN A TQFP-64 PACKAGEAPPLICATIONSDIGITAL MIXING CONSOLESDIGITAL AUDIO WORKSTATIONSAUDIO DISTRIBUTION SYSTEMSBROADCAST STUDIO EQUIPMENTGENERAL DIGITAL AUDIO PROCESSINGU.S. Patent No. 7,262,716.All trademarks are the property of their respective owners.AUTOMATIC SENSING OF INPUT-TO-OUTPUT SAMPLING RATIOWIDE INPUT-TO-OUTPUT SAMPLING RANGE: 16:1 to 1:16SUPPORTS INPUT AND OUTPUT SAMPLING RATES UP TO 212kHzDYNAMIC RANGE: 144dB (–60dbFS Input, BW = 20Hz to fs/2)THD+N: –140dB (0dbFS Input, BW = 20Hz to fs/2)HIGH-PERFORMANCE, LINEAR-PHASE DIGITAL FILTERING WITH BETTER THAN 140dB OF STOP BAND ATTENUATIONFLEXIBLE AUDIO SERIAL PORTS:Master or Slave Mode OperationSupports I2S, Left-Justified, Right-Justified, and TDM Data FormatsTDM Mode Allows Daisy-Chaining of Up to Four DevicesSUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND OUTPUT DATAAll Output Data is Dithered from the Internal 28-Bit Data PathSERIAL PERIPHERAL INTERFACE (SPI)™ PORT SUPPORTS REGISTER READ AND WRITE OPERATIONS IN SOFTWARE MODEBYPASS MODERoutes Input Port Data Directly to the Output PortFOUR GROUP DELAY OPTIONS FOR THE INTERPOLATION FILTERDIRECT DOWNSAMPLING OPTION FOR THE DECIMATION FILTERDIGITAL DE-EMPHASIS FILTERUser-Selectable for 32kHz, 44.1kHz, and 48kHz Sampling RatesSOFT MUTE FUNCTIONPROGRAMMABLE DIGITAL OUTPUT ATTENUATION (SOFTWARE MODE ONLY)256 Steps: 0dB to –127.5dB with 0.5dB StepsINPUT-TO-OUTPUT SAMPLING RATIO READBACK (SOFTWARE MODE ONLY)POWER-DOWN MODESSUPPORTS OPERATION FROM A SINGLE +1.8V or +3.3V POWER SUPPLYAVAILABLE IN A TQFP-64 PACKAGEAPPLICATIONSDIGITAL MIXING CONSOLESDIGITAL AUDIO WORKSTATIONSAUDIO DISTRIBUTION SYSTEMSBROADCAST STUDIO EQUIPMENTGENERAL DIGITAL AUDIO PROCESSINGU.S. Patent No. 7,262,716.All trademarks are the property of their respective owners.
Description
AI
The SRC4194 is a four-channel, asynchronous sample rate converter (ASRC), designed for professional and broadcast audio applications. The SRC4194 combines a wide input-to-output sampling ratio with outstanding dynamic range and ultra low distortion. The input and output serial ports support the most common audio data formats, as well as a time division multiplexed (TDM) format. This allows the SRC4194 to interface to a wide range of audio data converters, digital audio receivers and transmitters, and digital signal processors.
The SRC4194 may be operated in Hardware mode as a standalone pin-programmed device, with dedicated control pins for serial port mode, audio data format, soft mute, bypass, and digital filtering functions. Alternatively, the SRC4194 may be operated in Software mode, where a four-wire serial peripheral interface (SPI) port provides access to internal control and status registers.
The SRC4194 operates from either a +1.8V core supply or a +3.3V core supply. When operating from +3.3V, the +1.8V required by the core logic is derived from an internal voltage regulator. The SRC4194 also requires a digital I/O supply, which operates from +1.65V to +3.6V. The SRC4194 is available in a TQFP-64 package.
The SRC4194 is a four-channel, asynchronous sample rate converter (ASRC), designed for professional and broadcast audio applications. The SRC4194 combines a wide input-to-output sampling ratio with outstanding dynamic range and ultra low distortion. The input and output serial ports support the most common audio data formats, as well as a time division multiplexed (TDM) format. This allows the SRC4194 to interface to a wide range of audio data converters, digital audio receivers and transmitters, and digital signal processors.
The SRC4194 may be operated in Hardware mode as a standalone pin-programmed device, with dedicated control pins for serial port mode, audio data format, soft mute, bypass, and digital filtering functions. Alternatively, the SRC4194 may be operated in Software mode, where a four-wire serial peripheral interface (SPI) port provides access to internal control and status registers.
The SRC4194 operates from either a +1.8V core supply or a +3.3V core supply. When operating from +3.3V, the +1.8V required by the core logic is derived from an internal voltage regulator. The SRC4194 also requires a digital I/O supply, which operates from +1.65V to +3.6V. The SRC4194 is available in a TQFP-64 package.
