GENERAL DESCRIPTION
The various versions of the TDA837x series are I2C-bus controlled single-chip TV processors which are intended to be applied in PAL/NTSC (TDA8374 and TDA8375) and NTSC (TDA8373 and TDA8377) television receivers. All ICs are available in an SDIP56 package and some versions are also available in a QFP64 package. The ICs are pin compatible so that with one application board NTSC and PAL/NTSC (or multistandard together with the SECAM decoder TDA8395) receivers can be built. Functionally this IC series is split in to 2 categories:
• Versions intended to be used in economy TV receivers with all basic functions
• Versions with additional functions such as E-W geometry control, horizontal and vertical zoom function and YUV interface which are intended for TV receivers with 110° picture tubes.

FEATURES
Available in all ICs:
• Vision IF amplifier with high sensitivity and good figures for differential phase and gain
• PLL demodulator for the IF signal
• Alignment-free sound demodulator
• Flexible source selection with a CVBS input for the internal signal and Y/C or CVBS input for the external signal
• Audio switch
• The output signal of the CVBS (Y/C) switch is externally available
• Integrated chrominance trap and band-pass filters (auto-calibrated)
• Luminance delay line integrated
• A symmetrical peaking circuit in the luminance channel
• Black stretching of non-standard CVBS or luminance signals
• RGB control circuit with black current stabilization and white point adjustment
• Linear RGB inputs and fast blanking
• Horizontal synchronization with two control loops and alignment-free horizontal oscillator
• Slow start and slow stop of the horizontal drive pulses
• Vertical count-down circuit
• Vertical driver optimized for DC-coupled vertical output stages
• I2C-bus control of various functions
• Low dissipation
• Small amount of peripheral components compared with competition ICs.