TA8701AN

TA8701AN TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA8701AN PIF / SIF+ATT IC FOR TV / VTR To input function FEATURES PIF section · RF-Pre Amp. less by high input sensitivity · 3-Stage IF amplifier with variable gain · High-Speed response AGC with dual time constants · Single end AFT output with defeat function · Delayed RF AGC output (Reverse AGC) · Output with white / black noise inverter · Output without white / black noise inverter · Video mute switch SIF section · 3-stage limiter amplifier · Quadrature-type detection circuit Weight: 1.22g (Typ.) · Use of a ceramic discriminator device makes the SIF circuit adjustment-free · Sound mute switch · N.F. audio amplifier · DC ATT control 1 2001-05-10 BLOCK DIAGRAM TA8701AN 2 2001-05-10 TERMINAL FUNCTION PIN No. PIN NAME FUNCTION 1 2 AGC Filter This filter is a dual time constant system to speed up AGC. By connecting the primary filter terminal of pin 2 to GND, the picture muting is executed. TA8701AN INTERFACE CIRCUIT 3 AGC Delay This terminal adjusts the delay point of RF AGC by varying the reference voltage of comparator. 4 5 PIF Input This is an input terminal of PIF signal using an emitter follower. The input impedance is typical 2.5kΩ, 4pF. 6 PIF GND GND pin for the PIF amplifier. Connect a capacitor between pins 23 and 6. 7 RF AGC Output Output pin for RF-AGC supplied to the tuner. (A 39kΩ resistor is connected internally between pin 7 and the internal power supply p...