TDA4568 - Philips

TDA4568 Luminance signal delay circuit

TDA4568 The TDA4568 is an integrated circuit that provides the luminance signal delay in colour television receivers. Features • A luminance signal path (Y) which substitutes the conventional Y-delay coil with an integrated Y-delay line • Switchable delay time from 550 ns to 820 ns in steps of 90 ns and additional fine adjustment of 37 ns • Two Y output si.

Features

• A luminance signal path (Y) which substitutes the conventional Y-delay coil with an integrated Y-delay line
• Switchable delay time from 550 ns to 820 ns in steps of 90 ns and additional fine adjustment of 37 ns
• Two Y output signals; one of 180 ns less delay QUICK REFERENCE DATA PARAMETER Supply voltage (pin 10) Supply current (pin 10) Y-signal delay at pin 12 S1 open; R14−18 = 1.2 kΩ; note 1 t17-12 t17-12 t17-12 t17-12 0.5 MHz αY 490 580 670 760 0 550 640 730 820 1 610 700 790 880 2 ns ns ns ns dB CONDITIONS VP IP SYMBOL − MIN. 10.8 TYP. 12 22 − MAX. 13.2 UNIT V mA V15−18 = 0 to 2.5 V V1.