LA75691

Ordering number : EN5734 Monolithic Linear IC LA75691 IF Signal-Processing IC for PAL/NTSC Multichannel Audio TV and VCR Systems Overview The LA75691 is a PAL/NTSC multichannel audio VIF/SIF signal-processing IC that makes the minimum number of adjustments possible. The system is designed so that VCO adjustment makes AFT adjustment unnecessary, thus simplifying the adjustment steps in endproduct manufacturing. PLL detection is adopted in the FM detector, allowing the LA75691 to support multichannel detection for the audio signal. In addition, it also incorporates a buzz canceller that suppresses Nyquist buzz for improved audio quality. Package Dimensions unit: mm 3067-DIP24S [LA75691] Functions [VIF Block] PLL detector with minimum number of adjustments AFT Equalizer amplifier RF AGC [First SIF BLOCK] First SIF detector HPF [SIF Block] PLL-based FM detector [Muting Block] AV muting SANYO: DIP24S Features Excellent buzz and buzz/beating characteristics provided by a PLL detection technique that includes a buzz canceller. The second IF AGC filter is built in. No coils are used in the AFT and SIF circuits, making them adjustment free. Allowable power dissipation, Pd max — W Ambient temperature, Ta — °C Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose...