GENERAL DESCRIPTION
The TDA9181 is a an adaptive PAL/NTSC comb filter with two internal delay lines, filters, clock control and input clamps. Video standards PAL B, G, H, D, I, M and N and NTSC M are supported.
Two CVBS input signals can be selected by means of an input switch.

FEATURES
• One-chip multistandard adaptive comb filter
• Cross luminance reduction
• Cross colour reduction
• No chroma trap, therefore sharper vertical luminance transients
• Analog discrete-time signal processing, therefore no quantization noise
• Anti-aliasing and reconstruction filters are included
• Input switch selects between two Y/CVBS inputs
• Output switch selects between combed CVBS and an external Y/C source
• fSCas well as 2×fSCcolour subcarrier signal may be applied
• Alignment free
• Few external components
• Low power.