PIF/SIF IC FOR TV/VTR
TA8700AN
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8700AN
PIF / SIF IC FOR TV / VTR
FEATURES
PIF s...
Description
TA8700AN
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8700AN
PIF / SIF IC FOR TV / VTR
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 · Use of a ceramic discriminator device makes the SIF circuit adjustment-free · Sound mute switch
Weight: 1.02g (Typ.)
1 2001-05-10
BLOCK DIAGRAM
TA8700AN
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.
TA8700AN
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 19 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 pin.)
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3 2001-05-10
PIN No.
PIN NAME
FUNCTION
8
FM Det Output (De-emph...
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