TA2022AFNG Ver la hoja de datos (PDF) - Toshiba

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Fabricante

TA2022AFNG

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic

Toshiba 

Terminal

No. Name

Function

・AM mode

AGC time constant is

determined by external

capacitor.

8

AGC

・FM mode

The sudden change of stop

pulse sensitivity is held in by

external capacitor.

9

GND

―

Output of IF count signal

In case of IF request mode, IF

10 IF OUT

count signal for IF counter is

taken from this terminal.

FM: VIF (FM) = 80mVp−p (typ.)

AM: VIF (AM) = 100mVp−p (typ.)

IF request switch

VCC: Receive mode

Open: IF request mode

11 IF REQ

FM stop pulse sensitivity can

be changed by connecting

RSEN in IF request mode.

RSEN should be smaller than

100kΩ

Output of stop pulse

VCO frequency can be

monitored, in case that this

12 SP OUT

terminal is connected with

GND through a resistor

(RVCO ≒ 100kΩ).

ON : VCO monitor

OPEN : SP OUT

Stereo indicator terminal

・This terminal shared with

output of modulated AM IF

signal.

13

ST IND

・AM IF output: 6mVrms

(RIF = 3kΩ, typ.)

・RIF should be smaller than

3kΩ. In case that RIF > 3kΩ,

internal biasing circuit doesn't

operate normally in AM mode.

TA2022AFNG

Internal Circuit

Terminal

Voltage (V)

AM FM

――

―

0

0

――

――

――

――

4

2006-04-11

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