TDA4665

General description

The TDA4665 is an integrated baseband delay line circuit with one line delay. It is suitable for decoders with colour-difference signal outputs ±(R-Y) and ±(B-Y).

Features

• Two comb filters, using the switched-capacitor technique, for one line delay time (64 ms)
• Adjustment-free application
• No crosstalk between SECAM colour carriers (diaphoty)
• Handles negative or positive colour-difference input signals
• Clamping of AC-coupled input signals (±(R-Y) and ±(B-Y))
• VCO without external components
• 3 MHz internal clock signal derived from a 6 MHz CCO, line-locked by the sandcastle pulse (64 ms line)
• Sample-and-hold circuits and low-pass filters to suppress the 3 MHz clock signal
• Addition of delayed and non-delayed output signals
• Output buffer amplifiers
• Comb filtering functions for NTSC colour-difference signals to suppress cross-colour.

Applications

• Dedicated video CD players.

Block diagrams/pinning

Design support

Application Notes

AN96035_1; The TDA8376/TDA8376A demonstration board PR32031 (14-Mar-03)

AN96081_1; System application of SAB9076/77 PiP processor (02-Aug-96)

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