Pin Details of IC TDA1770A

Pin Details of IC TDA1770A

Functions :

• Synchonization circuit
• Precision oscillator and ramp generator
• Power output amplifier
• Flyback generator
• Voltage generator
• Precision blanking pulse
• Termal shut down protection

Pin No.	Functions	Voltage
1.	Blanking pulse output	0.1
2.	Positive(+Ve supply voltage )	22
3.	Flyback pulse output	0.1
4.	Not Connected	NC
5.	Ground(-Ve supply voltage)	0
6.	Ground(-Ve supply voltage)	0
7.	Power amplifier output	10.5
8.	Power amplifier supply voltage	22
9.	Oscillator	3.1
10.	Oscillator	0.4
11.	Sync pulse input	-2.7
12.	Oscillator	-
13.	Not Connected	NC
14.	Height control	-
15.	Ground (-Ve supply voltage )	0
16.	Ground (-Ve supply voltage )	0
17.	Rump pulse generator	-
18.	Ramp pulse output	3.5
19.	Power amplifier input (+Ve)(Non inverting input)	-
20.	Power amplifier input (-Ve)(inverting input)	4.4

Pin Details of IC TDA1701

Pin Details of IC TDA1701

Substitute : TDA1035
Functions :

• Sound IF amplifier
• FM Detector
• D.C volume control
• Audio output

Pin No.	Functiions	Voltage
1.	5.5 MHz sound IF input(inter carrier sound)	2
2.	5.5 MHz sound IF input(inter carrier sound)	2
3.	Audio output	4
4.	FM detector	4
5.	FM detector	4
6.	DC volume control(voltage varies with volume control setting)	2.1
7.	Audio signal input	4.6
8.	Tone control	9.8
9.	Audio signal output	10
10.	Positive supply (+ Ve terminal)	20
11.	Audio amplifier (bias voltage)	11.5
12.	DC volume control bias voltage	11.5
13.	Ground (-Ve supply terminal)	0

Pin Details of IC TDA1670(A),TDA1670(V), TDA 1675

Pin Details of IC TDA1670(A), TDA1670(V), TDA 1675

Substitute : TDA1675, TDA 167OV, TDA1870

Function : Vertical oscillator and vertical output ,Blanking generator

Pin No.	Functions	Voltage
1.	It is one output of the power amplifier.It drive the yoke by a negative ramp current (50Hz.)	13.7
2.	Supply voltage for power output stage	21.4
3.	Vertical oscillator (50Hz)	3.4
4.	Vertical oscillator (50Hz)	0.5
5.	Input for sync pulses (+Ve) (50Hz)	0.4
6.	Output of the switch driver by the internal clock pulse generated by the threshold circuits	0.5
7.	The curret between Pin No.7 and ground decides the height of the ramp (sawtooth pulse)	6.8
8.	Ground (-Ve supply voltage )	0
9.	Input of the buffer (output) stage	3.9
10.	Output of the buffer stage and is internal connected to the inverting input of the power amplifier	4.9
11.	Non inverting input	4.4
12.	Inverting input of the amplifier	4.3
13.	Output where the blanking pulse is available	1.2
14.	Main supply voltage	21.4
15.	Output of the flyback generator	1.4

Pin Details of IC TDA1190Z

Pin Details of IC TDA1190Z

Substitute: TDA1190, TDA 3190

Functions:

• IF limiter amplifier
• Aktive low pass filter
• FM detector
• D.C volume control
• AF ppre-amplifier
• AF output stage

Pin No.	Functions	Voltage
1.	IF amplifier input(sound IF input)	2.5
2.	IF decoupling capacitor for IF amplifier	2.5
3.	IF decoupling capacitor	2.5
4.	FM detector capacitor (tank circuit )	2
5.	FM detector capacitor (tank circuit )	2
6.	DC volume control(electronic attenuator )	2
7.	Audio frequency feedback	10
8.	Conpensation for soun quality	0.2
9.	Audiio frequency output	10
10.	Positive(+Ve)supply voltage(Vcc)	24
11.	Rippley rejection	10
12.	De-emphasis (Frequency attenuator)	2.5