SAA7152

INTEGRATED CIRCUITS DATA SHEET SAA7152 Digital Video Comb Filter (DCF) Product specification File under Integrated Circuits, IC02 August 1996 Philips Semiconductors Product specification Digital Video Comb Filter (DCF) SAA7152 FEATURES Comb filter circuit for luminance and chrominance separation Applicable for standards – PAL B/G, M and N – PAL 4.43 (525 lines, 60 Hz) – NTSC M and N – NTSC 4.43 (50 and 60 Hz) Luminance and chrominance bypasses with short delay in case of no filtering Line-locked system clock; CCIR-compatible I2C-bus controlled GENERAL DESCRIPTION The CMOS digital comb filter circuit is located between video analog-to-digital converters and the video multistandard decoder SAA7151B (not applicable for SAA7191B). The two-dimensional filtering is only appropriate for standard signals from a source with constant phase relationship between subcarrier signal and horizontal frequency. The comb-filter has to be switched off for VTR-signals and for separate VBS and C signals. In VCR and S-Video operation the luminance low-pass and the chrominance bandpass parts can still be used for noise reduction purposes. The processing delay is: 21 × LL27 clocks in active mode, or 3 × LL27 in short delay bypass mode (BYPS = 1) QUICK REFERENCE DATA SYMBOL VDD IP Vi Vo LL27 Tamb PARAMETER supply voltage (pins 11, 34, 44) total supply current input levels output levels typical system clock frequency operating ambient temperature range − MIN. 4.5 5.0 85 TYP. MAX. 5.5 1...