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TDA8153 Fiches technique(PDF) 2 Page - STMicroelectronics |
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TDA8153 Fiches technique(HTML) 2 Page - STMicroelectronics |
2 / 11 page 3 5 6 8 9 14 11 Q4 Q5 10 Q6 R4 R5 12 Q1 Q2 2 R2 Q31 R3 D4 4 R1 D2 D3 Q10 Q11 Q12 R9 R10 7 Q7 Q8 R7 Q32 R9 D7 R6 D5 D6 1 15 Q13 Q14 R12 Q33 R13 D10 R11 D8 D9 Q16 Q17 Q15 R14 R15 13 D11 I3 I2 I1 I4 1.6V SCHEMATIC DIAGRAM PIN FUNCTIONS N ° Name Function 1 GREEN FEEDBACK Feedback Output for ’Green’ Amplifier. The optimal value for the resistor connected here to set gain is 68k Ω 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. 4VH High Voltage Supply for Amplifier Stages, Typically 200V (see fig. 1.2). 5 FIRST GRID VOLTAGE Output providing DC voltage for first grid of CRT, typically Vs +VBE. 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). TDA8153 2/11 |
Numéro de pièce similaire - TDA8153 |
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Description similaire - TDA8153 |
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