TA8725AN

The TA8725AN combines all the funcitons required for an NTSC CTV system in a 56-lead, dual-in-line shrink-type plastic package.This IC includes PLL type PIF/SIF circuits, video/chroma/deflection circuits and OSD interfaces.

Features of TA8725AN are: (1)PIF stage: split carrier PLL type PIF;high speed 3-stage variable gain PIF amplifier with dual time constants(peak AGC);single-end AFT output with defeat function; RF AGC output(reverse AGC); Sync.negative detected video output; internal black/white noise inverter with EIA decoder SW(for IS-15); (2)SIF stage: split carrier SIF;20 dB SIF AGC; quadrature FM detector circuit with sound mute function; (3)video stage: black expander; variable DC restoration ratio; built-in video delay-time with 3.58 MHz trap; picture sharpness with internal delay-time(160 ns); contrast control with uni-color function.

The absolute maximum ratings of TA8725AN can be summerized as: (1): supply voltage, VCC is 12 V; (2): power dissipation, PDmax is 1.92 W; (3): input terminal voltage, Vin is GND-0.3 V to VCC+0.3 V; (4): input signal amplitude, ein is 4 Vp-p; (5): operating temperature, Topr is -20 to 65; (6): storage temperature, tstg is -55 to 150.