ILA4661

TECHNICAL DATA BASEBAND DELAY LINE GENERAL DESCRIPTION The ILA4661 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). Device is functionally identical to the TDA4661 Philips. FEATURES Two comb filters, using the switched-capacitor technique, for one line delay time (64 µS) 3 MHz internal clock signal derived from a 6 MHz CCO, line-locked by the sandcastle pulse (64 µS line) Comb filtering functions for NTSC colour-difference signals to suppress cross-colour Clamping of AC-coupled input signals ± (R-Y) and ± (B-Y) QUICK REFERENCE DATA Parameter Analogy supply current, mA Digital supply current, mA Input fixing voltage (on pins 14 and 16), V Output voltage (on pins 11 and 12), V Output signal (peak-to peak value) ± (R-Y) on pin 11 ± (B-Y) on pin 12 Ratio of output amplitudes at equal input signals (U14=U16=1.33V), dB Ratio of output signals on pins 11 and 12 for adjacent time samples at constant input signals (U14=U16=1.33V), dB Gain for PAL and NTSC Gain for SECAM (ratio UO/UI), dB Delay of delayed signals, µS Delay of non-delayed signals, nS Transient time of delayed signal on pins 11 respectively 12, nS Transient time of non-delayed signal on pins 11 respectively 12, nS Noise voltage (RMS value; pins 11 and 12), mV Weighted signal-to-noise ratio, dB Symbol Ip1 Ip2 U14,16 U11,12 U011 U012 w w w t a .D S a e h Gv td tdn ttr U 4 t e Min. 1.3 2.5 -0.4 -0.1 5.3 -...