Electronic Schematic Base band Delay Line using TDA4661

Schematic Base band Delay Line

Schematic Base band Delay Line

Baseband Delay Line using TDA4661
Electronic Schematic Base band Delay Line using TDA4661
General Description
The TDA4661 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 line delay time (64us).
Adjusment-free application.
No crosstalk between SECAM colour carries (diaphoty).
Handles negative or positive colour-differenceinput signals.
Clamping of AC-coupled input signals (R-Y) and (B-Y).
VCO without external component.
3 MHz internal clock signal derived from 1 6 MHz CCO, line-clocked by the sandcastle pulse (64us line).
Sample-and-hold circuits and low-pass filters to suppress the 3 MHz clock signal.
Addition of delayed snd non-delayed output signals.
Output buffer amplifiers.
Comb filtering functions for NTSC colour-difference signals to suppress cross-colour.