MC141622

Features:

• Builtin High Speed 8Bit A/D Converter
• Two Line Memories (1820 Bytes)
• Advanced CombII Process
• Vertical Enhancer Circuit
• Two High Speed 8Bit D/A Converters
• 4xfsc PLL Circuit
• Builtin Clamp Circuit
• Digital Interface Mode
• OnChip Reference Voltage Regulator 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 high-impedance 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 Comb FilterII is a video signal processor for VCRs and TVs. MC141622's function is to separate the Luminance Y and Chrominance C signals from the NTSC composite video signal. The ACFII minimizes dotcrawl and crosscolor. A builtin PLL provides a 4xfsc clock from either an NTSC subcarrier signal or a 4xfsc input. MC141622 allows a video signal input of an extended frequency bandwidth. The builtin vertical enhancer circuit improves the quality of the Luminance Y signal. The builtin A/D and D/A converters allow easy connection to analog video circuits.