Daewoo 14Q1 - Manual (Page 15)

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TDA8374A (Single chip TV Processor for Negative modulation IF )
TDA8374 (Single chip TV Processor for Negative & positive modulation IF)
(1) General Description
The TDA8374(A) is I2C-bus controlled single chip TV processors which are intended to be applied in PAL/NTSC
television receiver.
The IC is mounted in a S-DIL 56 envelope.
(2) Feature
• IF
- Vision IF amplifier with high sensitivity and good figures for differential phase and gain
- PLL demodulator with high linearity offering the possibility for (single standard) intercarrier stereo audio application .
- Alignment PLL via I2C
- [TDA8374] Multistandard IF with negative and positive modulation, switchable via I2C
• AUDIO
- Alignment free multi standard PLL audio demodulator (4.5 to 6.5 MHz.)
- Mono volume control
• Video
- Integrated luminance delay line
- Integrated chroma trap and bandpass filters (auto calibrated)
- Asymmetrical peaking circuit in the luminance channel
- Black stretching of non standard CVBS or luminance signals
• Colour
- SECAM interface for application with SECAM add-on TDA8395.
• RGB
- RGB control (brightness, contrast, saturation)
- Black current stabilization and white point adjustment
• Input / Output
- Flexible video source select with CVBS input for the internal signal and two external video inputs(one switchable for
CVBS or Y/C).
- The output signal of the video source select is externally available ( also as CVBS when Y/C input is used).
- External audio input.
- Linear RGB input with fast blanking.
• Synchronization and Deflection
- Horizontal synchronization with two control loops and alignment free horizontal oscillator.
- Slow start and slow stop of the horizontal drive output to enable low stress start-up and switch-off from the line
circuit at nominal line supply voltage.
- Vertical count-down circuit for stable behavior with provisions for non-standard signals.
- Vertical geometry control.
- Vertical drive optimized for DC coupled vertical output stages.
• Control
- Full I2C bus control, as well for customer controls as for factory alignment.
- All automatic controls have an option for forced mode.
• Power consumption
- Low power consumption (900 mW at 8.0 Volts).
• Packaging
- SDIL-56 (Shrinked Dual In Line, 56 pins).