TDA9850

General description

The TDA9850 is a bipolar-integrated BTSC stereo/SAP decoder (I²C-bus controlled) for application in TV sets, VCRs and multimedia.

Features

• Quasi alignment-free application due to automatic adjustment of channel separation via I²C-bus
• Dbx noise reduction circuit
• Dbx decoded stereo, Second Audio Program (SAP) or mono selectable at the AF outputs
• Additional SAP output without dbx, including de-emphasis
• High integration level with automatically tuned integrated filters
• Input level adjustment I²C-bus controlled
• Alignment-free SAP processing
• Stereo pilot PLL circuit with ceramic resonator, automatic adjustment procedure for stereo channel separation, two pilot thresholds selectable via I²C-bus
• Automatic pilot cancellation
• Composite input noise detector with I²C-bus selectable thresholds for stereo and SAP off
• I²C-bus transceiver.

Applications

• Wired telephony (basic till feature phones)
• Combi-terminals (e.g. telephone and answering machine or FAX)
• Modems and base units of cordless telephones.

Block diagrams/pinning

Design support

Application Notes

ANDECODER; Audio Stereo Decoders (1996-09-11)

AN97047_1; DVB-IF downconverter for set top boxes with AGC and VIF/SIF-demodulator: TDA9819 (1997-12-09)

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