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SAA7282

NXP
Part Number SAA7282
Manufacturer NXP
Description Terrestrial Digital Sound Decoder TDSD2
Published Apr 8, 2005
Detailed Description INTEGRATED CIRCUITS DATA SHEET SAA7282 Terrestrial Digital Sound Decoder (TDSD2) Product specification File under Integ...
Datasheet PDF File SAA7282 PDF File

SAA7282
SAA7282

Overview
INTEGRATED CIRCUITS DATA SHEET SAA7282 Terrestrial Digital Sound Decoder (TDSD2) Product specification File under Integrated Circuits, IC02 July 1993 Philips Semiconductors Product specification Terrestrial Digital Sound Decoder (TDSD2) FEATURES • Full EBU NICAM 728 specification decoder • Microcomputer controlled via I2C-bus • Automatic decoding and output configuration depending upon transmission: – digital stereo – digital mono and data – 2 independent mono signals • On board RAM for de-interleaving and 10 to 14-bit word expansion • Automatic mute function which silences the digital data and switches to FM sound (if valid) when error rate exceeds user definable limit • User mute function (MUTE pin) to enable user to perform muting to their own software algorithm if required, or to simply silence the output • 4 times over-sampling digital filter • Selectable digital de-emphasis • 256 times over-sampling Noise Shapers • Fully integrated 1-bit DACs • Integrated switching networks allowing selection between NICAM Sound, FM Sound or external “Daisy-Chain” input • Digital Audio Interface conforming with EBU/IEC 958 • I2C-bus transceiver enabling a master device to read – status information QUICK REFERENCE DATA SYMBOL VDD IDD fXTAL Tamb supply current crystal frequency operating ambient temperature PARAMETER positive supply voltage 4.
5 − − 0 MIN.
5.
0 50 8.
192 − TYP.
5.
5 100 − 70 MAX.
GENERAL DESCRIPTION – error count byte – additional data bits and write: – switch control codes – decoder control – upper and lower error rate limits.
APPLICATIONS • Television receivers • Video cassette recorders.
SAA7282 Performing all digital decoding functions for a NICAM 728 digital stereo sound system, the SAA7282 is a highly integrated CMOS circuit which only requires a DQPSK (Differential Quadrature Phase Shift Keying) demodulator (TDA8732) and minimum external components to achieve a full NICAM solution.
The device may also be interfaced to other DQPSK demodulators.
UNIT V mA...


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