OM8378 PDF – TV Signal Processor- Closed Caption Decoder

Part Number: OM8378

Function: TV signal processor- Closed Caption decoder

Package: DIP 64 Pin Type

Manufacturer: Philips Semiconductors


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The OM8373 and OM8378 combine the functions of a video processor together with a µ-Controller and US Closed Caption decoder. The ICs are intended to be used in economy television receivers with 110° picture tubes. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in a SDIP-64 envelope. The features are given in the following feature list.


TV-signal processor

1. Vision IF circuit suitable for negative modulation with alignment-free PLL demodulator

2. Internal (switchable) time-constant for the IF-AGC circuit

3. The mono intercarrier sound circuit has a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz).  The quality of this system is such that the external band-pass filters can be omitted.

4. Source selection between the ‘internal’ CVBS and an external CVBS or Y/C signal



OM8378 PDF Datasheet