TDA4661

Philips Semiconductors Product specification Baseband delay line FEATURES Two comb filters, using the switched-capacitor technique, for one line delay time (64 µs) 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 µs 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. QUICK REFERENCE DATA SYMBOL VP1 VP2 IP(tot) VI PARAMETER analog supply voltage (pin 9) digital supply voltage (pin 1) total supply current MIN. 4.5 4.5 − 5 5 4.9 525 665 1.05 1.33 5.8 5.8 −0.1 −0.1 TYP. 6 6 GENERAL DESCRIPTION TDA4661 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). MAX. V V UNIT 7.0 − − − − 6.3 6.3 +0.4 +0.4 mA mV mV V V dB dB dB dB ±(R−Y) input signal PAL/NTSC (peak-to-peak value; pin 16) − ±(B−Y) input signal PAL/NTSC (peak-to-peak value; pin 14) − ±(R−Y) input signal SECAM (peak-to-peak value; pin 16) ±(B−Y) input signal SECAM (peak-to-peak value; pin 14) − − 5.3 5.3 −0.6 −0.6 Gv gain...