MC141627

Features:

• BuiltIn High Speed 8Bit A/D Converter
• Four Line Memories (4540 Bytes)
• Advanced CombII Process
• BuiltIn Vertical Enhancer
• Vertical Dot Reduction Process
• Two BuiltIn High Speed 8Bit D/A Converters
• BuiltIn 4xFSC PLL Circuit
• BuiltIn Clamp Circuit
• Digital Interface Mode
• OnChip Reference Voltage for A/D Converter


Pinout




Specifications

Characteristic	Symbol	Value	Unit
DC Supply Voltage (Referenced to GND)	VCC	0.5 to + 7.0	V
DC Input Voltage (Referenced to GND)	Vin	1.5 to VCC + 1.5	V
DC Output Voltage (Referenced to GND)	Vout	0.5 to VCC + 0.5	V
DC Input Current (per pin)	Iin	± 20	mA
DC Output Current (per pin)	Iout	± 25	mA
Power Dissipation	PD	750	mW
Storage Temperature Range	Tstg	65 to + 150

* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation
   should be restricted to the limits in the Electrical Characteristics tables or Pin Descriptions section.

This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to
this highimpedance circuit. For proper operation, V_in and V_out should be constrained to the range GND 3 (V_in or V_out) 3 V_CC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V_CC). Unused outputs must be left open.


Description

The Advanced PAL Comb FilterII is a video signal processor for VCRs, LDPs, and TVs. MC141627 separates the Luminance Y and Chrominance C signal from the NTSC/PAL composite signal by using digital signal processing techniques which minimize dotcrawl and crosscolor. The builtin 4xFSC PLL circuit allows a subcarrier signal input, which generates 4xFSC clock for video signal processing. This filter MC141627 allows a video signal input of an extended frequency bandwidth by using a 4xFSC clock. The builtin vertical enhancer circuit MC141627 reduces noise and dot crawl on the Luminance Y signal. The builtin A/D and D/A converters allow easy connection to analog video circuits.