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SRC4194IPAG Datasheet(PDF) 1 Page - Texas Instruments |
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SRC4194IPAG Datasheet(HTML) 1 Page - Texas Instruments |
1 / 43 page FEATURES D AUTOMATIC SENSING OF INPUT-TO-OUTPUT SAMPLING RATIO D WIDE INPUT-TO-OUTPUT SAMPLING RANGE: 16:1 to 1:16 D SUPPORTS INPUT AND OUTPUT SAMPLING RATES UP TO 212kHz D DYNAMIC RANGE: 144dB (−60dbFS Input, BW = 20Hz to fs/2) D THD+N: −140dB (0dbFS Input, BW = 20Hz to f s/2) D HIGH-PERFORMANCE, LINEAR-PHASE DIGITAL FILTERING WITH BETTER THAN 140dB OF STOP BAND ATTENUATION D FLEXIBLE AUDIO SERIAL PORTS: − Master or Slave Mode Operation − Supports I2S, Left-Justified, Right-Justified, and TDM Data Formats − TDM Mode Allows Daisy-Chaining of Up to Four Devices D SUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND OUTPUT DATA: − All Output Data is Dithered from the Internal 28-Bit Data Path D SERIAL PERIPHERAL INTERFACE (SPI) PORT SUPPORTS REGISTER READ AND WRITE OPERATIONS IN SOFTWARE MODE D BYPASS MODE: − Routes Input Port Data Directly to the Output Port D FOUR GROUP DELAY OPTIONS FOR THE INTERPOLATION FILTER D DIRECT DOWNSAMPLING OPTION FOR THE DECIMATION FILTER D DIGITAL DE-EMPHASIS FILTER: − User-Selectable for 32kHz, 44.1kHz, and 48kHz Sampling Rates D SOFT MUTE FUNCTION D PROGRAMMABLE DIGITAL OUTPUT ATTENUATION (SOFTWARE MODE ONLY): − 256 Steps: 0dB to −127.5dB with 0.5dB Steps D INPUT-TO-OUTPUT SAMPLING RATIO READBACK (SOFTWARE MODE ONLY) D POWER-DOWN MODES D SUPPORTS OPERATION FROM A SINGLE +1.8V OR +3.3V POWER SUPPLY D AVAILABLE IN A TQFP-64 PACKAGE APPLICATIONS D DIGITAL MIXING CONSOLES D DIGITAL AUDIO WORKSTATIONS D AUDIO DISTRIBUTION SYSTEMS D BROADCAST STUDIO EQUIPMENT D GENERAL DIGITAL AUDIO PROCESSING DESCRIPTION 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. U.S. Patent No. 7,262,716. SRC4194 SBFS025B − JUNE 2004 − REVISED SEPTEMBER 2007 4-Channel, Asynchronous Sample Rate Converter PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. www.ti.com Copyright 2004−2007, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. |
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