TDA8153 View Datasheet(PDF) - STMicroelectronics
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TDA8153 Datasheet PDF : 11 Pages
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TDA8153
PIN FUNCTIONS
N°
Name
Function
1
GREEN
Feedback Output for ’Green’ Amplifier. The optimal value for the resistor connected here to set
FEEDBACK gain is 68kΩ as shown in fig. 1.2. Other feedback connections are pin 2 (red) and pin 14 (blue).
2 RED FEEDBACK Feedback Output for ’Red’ Amplifier. See pin 1.
3 RED OUTPUT Output of ’Red’ Video Amplifier. See pin 15.
4
VH
High Voltage Supply for Amplifier Stages, Typically 200V (see fig. 1.2).
5 FIRST GRID Output providing DC voltage for first grid of CRT, typically Vs + VBE.
VOLTAGE
6 RED INPUT Input of ’Red’ Video Amplifier. See pin 7.
7 GREEN INPUT Input of ”Green” Video Amplifier. The bias voltage at the inputs is equal to Vref + 2VBE. Other
inputs are pin 6 (red) and pin 9 (blue).
8
GROUND
Ground Connection (pin 8 is also connected to the tab).
9 BLUE INPUT Input of ’Blue’ Video Amplifier. See pin 7.
10
Vref
The reference voltage for the three amplifiers is available on this pin. Typical value is 1.6V. The
capacitor connected between pin 10 and ground eliminates AC crosstalk between the amplifiers.
11
Vs
Supply Voltage Input for Low Voltage Circuitry, typically 12V.
12 SAMPLING Cathode Current Sampling Output. Provides sum of cathode currents for automatic cut-off
adjustment with video processors using the sequential system. The three current generators I1,
I2 and I3 bias the inputs of this circuit which performs the cut-off adjustment, allowing also
adjustment with in flowing CRT leakages.
13 BLUE OUTPUT Output of ’Blue’ Video Amplifier. See pin 15.
14 BLUE FEEDBACK Feedback Output for ’Blue’ Amplifier. See pin 1.
15 GREEN OUTPUT Output of the ’Green’ Video Amplifier. The output is protected against CRT flashovers. Other
outputs are pin 3 (red) and pin 13 (blue).
SCHEMATIC DIAGRAM
4
2/11
R1
Q31
I1
R2
D4
Q1
D2 D3
3
Q2
2
R3
12
R6
Q32
I2 R11
Q33
R7
R12
D7
Q7
D5 D6
D10
Q13
D8 D9
15
Q8
1
Q14
14
R9
R13
I3
I4
13
Q5
11
Q11
Q17
5
6 Q4
7 Q10
D11
9 Q16
Q6
Q12
Q15
R4
R5
10
8
R9
R10
R14 R15
1.6V
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