ICs for TV AN5170K VIF/SIF signal processor IC for TV and VCR ■ Overview • 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. 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 1.778 21.7±0.3 ■ Features 0.5±0.1 0.9±0.25 Unit : mm 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. 1.1±0.25 6.2±0.3 3.05±0.25 4.7±0.25 + 0.1 0.3 – 0.05 7.62±0.25 3 ∼ 15˚ 24-Pin Shrunk DIL-Plastic Package (SDIP024-P-0300) ■ Block Diagram SIF IN IF AGC QDET OUT IF DET VCC1 DET IN FEED BACK VIDEO OUT VCC2 APC VCO VCO 24 23 22 21 20 19 18 17 16 15 14 13 NI EQAMP VCO CTRL LIM AMP VCO LDET APC PST DET SAPC IFAGC SVCO REG QDET AUD AMP 1 1 2 SPLL SDEC 3 4 QAGC VIF AMP RFAGC 5 AUDIO RFAGC RFAGC OUT OUT ADJ QIF AMP AFT 6 7 8 9 10 11 12 VIF IN VIF IN GND QIF IN REG LDET AFT OUT