PIN DETAIL of IC A 240

PIN DETAIL of IC A 240

Substitute :TDA 440 S,B

Functions :

1.Video IF amplifier (3 stage)
2.Video detector (Limiter)
3.Sync detector
4.AGC detector
5.Video pre-amplifier

Pin No.	Function	Voltage
1.	Video IF input	4
2.	Decoupling capacitor for biasing	4
3.	Ground (-Ve terminal)	0
4.	AGC time constant	2
5.	Tuner AGC output	12
6.	Tuner AGC Delay	1
7.	Flyback pulse(15625 Hz)input from EHT	1
8.	FM Detector (Carrier tuning)	7
9.	FM Detector (Carrier tuning)	7
10.	Voltage regulation	0.2
11.	Negative video output	3
12.	positive video output	8.5
13.	Positive (+ Ve supply voltage)	12
14.	Internally connected	4
15.	Decoupling capacitor for biasing	4
16.	Video IF input	4

PIN DETAILS of IC A224 D

PIN DETAILS of IC A224 D

Substitude : TBA120T,SN76623

Functions :

1.Sound IF Amplifier.
2.FM Detector.
3.A.F.Ampliefier

Pin No.	Functions	Voltage
1.	Ground( -Ve supply voltage )	0
2.	Sound IF input (5.5 MHz)	1.9
3.	Audio voltage input	2.9
4.	Volume Feedback	4.8
5.	volume control (Electronic attenuator)	3.8
6.	FM Detector	-
7.	FM Detector	3.3
8.	AF Output	4
9.	FM Detector	3.3
10.	FM Detector	-
11.	Positive (+ Ve supply voltage)	11
12.	Fixed AF Output	5
13.	Sound I.F. Feedback	1.9
14.	Sound I.F. Input(5.5 Mhz.)	1.9