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| ICs for TV AN5170K VIF/SIF signal processor IC for TV and VCR s Overview The AN5170K is a VIF/SIF signal processor IC for NTSC TVs and VCRs. The SIF part needs no coil and requires no adjustment. The AFT part needs no coil, and is adopted quasi-separate sound (QSS) method. 1 2 3 4 5 6 7 8 9 10 11 12 6.20.3 4.70.25 24 23 22 21 20 19 18 17 16 15 14 13 Unit : mm 0.50.1 0.90.25 1.10.25 3.050.25 + 0.1 * The SIF part adopts PLL detection, needs no coil, and requires no adjustment. * The AFT part uses APC voltage, eliminating the need of a coil. * QSS technique is employed for better buzz characteristics and audio sensitivity. * EQ amplifier is used for video frequency-characteristics correction. * Low power consumption (5.0V, 48mA) * The AFT output circuit has its own power supply, VCC2 (from VCC1 to 12.5V), to be compatible with various types of tuners. 0.3 - 0.05 3 15 7.620.25 24-Pin Shrunk DIL-Plastic Package (SDIP024-P-0300) s Block Diagram SIF IN 24 IF AGC 23 QDET OUT 22 IF DET 21 VCC1 20 DET IN 19 FEED BACK 18 VIDEO OUT 17 VCC2 16 APC 15 VCO 14 VCO 13 NI LIM AMP LDET EQAMP VCO CTRL VCO APC DET SAPC SVCO IFAGC QDET VIF AMP QAGC QIF AMP PST REG AUD AMP RFAGC AFT 1 2 3 4 5 6 7 8 9 10 11 12 SPLL SDEC AUDIO RFAGC RFAGC OUT OUT ADJ VIF IN VIF IN GND QIF IN REG LDET AFT OUT 1 1.778 s Features 21.70.3 |
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