LA7566

Ordering number : EN5764 Monolithic Linear IC LA7566 VIF/SIF IF Signal-Processing Circuit with TV/VCR PAL and NTSC Multisound Support Overview The LA7566 is a VIF/SIF IC that supports PAL and NTSC multisound and that adopts a semi-adjustment-free system. To simplify adjustment, the VIF block adopts a technique in which AFT adjustment is no longer required by VCO adjustment. The SIF block supports audio multidetection by adopting a PLL detection technique. The SIF block provides 4 inputs with IC internal switching for easy design of multi-sound systems. Additionally, these switches can also be used for video system sound trap switching. The LA7566 also includes a buzz canceller that suppresses Nyquist buzz to achieve improved audio quality. Package Dimensions unit: mm 3067-DIP24S [LA7566] Functions Allowable power dissipation, Pd max — W SANYO: DIP24S [VIF Block] VIF amplifier PLL detector BNC RF AGC EQ amplifier AFT IF AGC Buzz canceller [First SIF Block] First SIF amplifier First SIF detector AGC [SIF Block] Multiple input switch Limiter amplifier PLL FM detector Features No coils are used in the AFT and SIF blocks, making these circuits adjustment free. PAL / NTSC multisound system can be constructed easily. Built-in buzz canceller for excellent audio performance Ambient temperature, Ta — °C Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Circuit voltage Symbol VCC max V7, V9, V10, V17 I1 Circuit curre...