Pin Details of IC TDA 2611A


Functions :
Sound output


Pin
No.
Functions Voltage
1. Positive ( + Ve supply voltage ) 20
2. Audio frequency output for driving the speaker 10
3. Not conneted NC
4. Ground (- Ve supply voltage ) 0
5. Not connected NC
6. Ground (- Ve supply voltage ) 0
7. Audio frequency input 1.2
8. Decoupling capacitor 11.5
9 Negative(-Ve ) feedback (output to input ) 0.1


Pin Details of IC of IC TDA 2593


Substitute : A255D , TDA 2590 , TDA 2591
Functions :
  1. Sync separator
  2. Vertical Sync Separator
  3. AFC
  4. Hoorizontal Sync Separator
  5. Burs gating and Horizontal blanking pulse generator
Pin
No.
Fuctions Voltage
1. Positive (+Ve)Supply voltage 12
2. Positive (+Ve)Supply voltage output srage ( Tringger pulse input ) 12
3. Horizontal tringer pulse output ( 15625Hz.) 1.2
4. Selection of output pulse duration 0
5. Decoupling Capacitor 6.5
6. Horizontal flyback (blankimg)pulse (15625Hz.) for 2nd phase coparator 0.2
7. Sandcastle (horizontal blanking pulse ) output (15625Hz.) 1.8
8. Vertical sync output (50Hz.) 0.2
9. Sync pulse input 1.6
10. Noise separator input 2.2
11. VCR switching ( Coincidence ) 5.7
12. Time constant switching (third phase comparator ) 2.2
13. Fist phase comparator output 6.1
14. Ramp ( sawtooth ) oscillator capacitance 6
15. Horizontal frequency (15625Hz.) adjust (H-Hold) 6
16. Ground (-Ve) supply voltage 0


Pin Details Details of IC TDA 2591

Substitute : A255D , TDA 2590 , TDA 2593

Functions :
  1. Sync Separator
  2. Vertical Sync separator
  3. AFC
  4. Horizontal Sync separator
  5. Burs gating and Horizontal blangking pulse generator
Pin
No.
FunctionsVoltage
1.Positive (+Ve supply voltage )12
2.Positive (+Ve supply voltage ) output stage (trigger pulse input)12
3.Horizontal trigger pulse output (15625Hz.)1.2
4.Selection of output pulse duration0
5.Decoupling Capacitor6.5
6.Horizontal flyback(blanking)pulse (15625Hz.)for 2nd phase caparator0.2
7.Sancastle (Horizontal blanking pulse )output (15625Hz.)1.8
8.Vertical sync output (50Hz.)0.2
9.Sync pulse input1.6
10.Noise separator input2.2
11.VCR swithching (Coincidence)5.7
12.Time contant swithching (third phase caomparator )2.2
13.First phase comparator output6.1
14.Ramp (sawtooth)oscillator capacitance6
15.Horizontal frequency (15625 Hz.) adjust (H-Hold)6
16.Ground (-Ve supply voltage )0


Pin Details of IC TDA 2590


Substitute : A255D , TDA2591 , TDA 2593
Functions :
  1. Sync Separator
  2. Vertical Sync Separator
  3. A.F.C
  4. Horizontal sync Separator
  5. Burst gating and Horizontal blanking pulse generator
Pin
No.
FunctionsVoltage
1.Positive (+Ve supply voltage)12
2.Positive (+Ve supply voltage) output stage (Trigger pulse input)12
3.Horizontal trigger pulse output (15625 Hz.)1.2
4.Selection of output pulse duration0
5.Decoupling capacitor6.5
6.Horizontal flyback (blanking)pulse (15625 Hz.) for 2nd phase comparator0.2
7.Sandcastle (Horizontal blanking pulse) output (15625 Hz)1.8
8.Vertical Sync output (50 Hz.)0.2
9.Sync pulse input1.6
10.Noise separator input2.2
11.VCR switching ( Coincidence )5.7
12.Time constant switching ( third phase coparatior )2.2
13.First phase comporator output6.1
14.Ramp ( sawtooth ) oscillator capacitance 6
15.Horizontal frequency ( 15625 Hz. ) adjust (H-Hold)6
16.Ground (-Ve supply voltage )0


Pin Details of IC TDA 2581 and TDA 1582


Functions :
  1. Horizontal phase detector
  2. Pulse width modulator
  3. Horizontal oscillator
  4. Error Amplifier
  5. Horizontal driver stage
Pin
No.
FunctionsVoltage
1.Phase detector output1.5
2.Horizontal flyback(blanking)pulse(15625Hz.)Input0
3.Horizontal sync pulse input0
4.Re-start count capacitor1.2
5.Slow start and transfer characteristic ( voltage varies )up-down
6.Over current protection input0.7
7.Over current protection input6.8
8.Feedback output to input6.3
9.Positive (+ Ve supply voltage )13
10.Reference voltage input6.8
11.Horizontal output (15625 Hz.)2
12.Duty factor adjust2
13.Oscillator timing network1.3
14.Reference voltage (saw tooth oscillator)1.5
15.Reference stage input (saw tooth oscillator )1.9
16.Ground (-Ve supply voltage )0


Pin Details of IC TDA2579


Functions :
  1. Horizontal phase detector
  2. Sync separator
  3. Horizontal oscillator
  4. Horizontal driver (output )
  5. Second phase detector for storage compensation of Horizontal output
  6. Vertical oscillator
  7. Vertical trigger circuit
  8. Vertical driver (output)
  9. 3 level sandezstle pulse generator
  10. Video trasmission (mute)
Pin
No.
FunctionsVoltage
1.(50Hz.)Vertical frequency,output3.4
2.Vertical feedback0.9
3.Vertical oscillator frequency (50Hz.) control (V-Hold)4
4.Vertical ramp (sawtooth)generator7.3
5.Composite video signal with negative going sync pulses,input3
6.Sync separator6.6
7.Noise inverter5.1
8.Horizontal oscillator phase control loop 1 (sync pulses to oscillator) 3.3
9.Ground (-Ve supply voltage )0
10.Positive (+ Ve supply voltage)11
11.15625 Hz. frequency output1.4
12.Flyback ( blanking ) pulse ,input 0.1
13.Video transmitter identification, output10.6
14.Phase adjustment2.6
15.Horizontal oscillator ( 15625 Hz. ) 5.5
16.Start supply 9
17.Sand castle , output1.4
18.Coicidence detector, video tranmitter identification circuit5.8


Pin Details of IC TDA2578

Pin Details of IC TDA2578

Functions :

  1. Sync separator
  2. AFC
  3. Horizontal oscillator
  4. Vertical oscillator
  5. Horizontal driver
  6. Vertical driver
  7. Phase detector
  8. Vertical blangking generator

Pin

No.

Functions
Voltage
1.
Vertical driver output(50Hz.)
5.5
2.
Vertical feedback to vertical comparator
4.4
3.
Vertical oscillator frequency(50Hz.)control (V-Hold)
5.4
4.
Vertical sync separator (50Hz.)
5.3
5.
Composite video signal input to sync separator
3
6.
7.9
7.
Horizontal oscillator (15625Hz.)
6.4
8.
Horizontal oscillator (15625Hz.)phase control phase detector
3
9.
Ground (-Ve supply voltage)
0
10.
Positive (+ Ve supply voltage)
12.4
11.
Horizontal frequency output (15625Hz.)
3.8
12.
Flyback (blanking) input pulse ( 15625Hz.)
0.4
13.
Video tranmitter identification output
6.8
14.
2.6
15.
Horizontal oscillator frequency control ( 15625Hz. )H-hold
4.4
16.
Positive stabilized supply to start circuit
9
17.
Sand castle pulse output
1.4
18.
Coincidance detector (phase detector)
0.6



 
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