LA7565E

www.DataSheet4U.com Ordering number :ENN6100A Monolithic Linear IC LA7565E, 7565KM IF Signal-Processing IC for PAL/NTSC Multi-System Audio TV and VCR Products Overview The LA7565E and LA7565KM are PAL/NTSC multisystem audio VIF/SIF signal-processing ICs that adopt a minimal-adjustment technique. The VIF circuit adopts a minimal-adjustment technique in which AFT adjustment is made unnecessary by VCO adjustment to simply end product adjustment. The FM detector circuit uses PLL detections to support multi-system audio detection. Since the LA7565BM include an SIF converter on chip, it is easy to implement multi-system audio. In addition, it also includes a buzz canceller that suppresses Nyquist buzz to achieve improved audio quality. The LA7565G and LA7565KM feature improvements over the LA7565B and LA7565BM in the FM low-range frequency characteristics, vertical synchronization buzz, and AFT drift. Features Allows the use of a switch circuit to switch between spilt and intercarrier operation. Improved buzz and buzz beat characteristics provided by a PLL detector plus buzz canceller system. The IF AGC second filter is built in. PAL/NTSC multi-system audio can be implemented easily. Adjustment-free circuit design that does not require AFT and SIF coils. Functions [VIF Block] PLL detector AFT RF AGC Buzz canceller Equalizer amplifier SIF converter VIF amplifier IF AGC [First SIF Block] First SIF detector First SIF amplifier [SIF Block] PLL type ...