Title :
A monolithic analog video comb filter in a 1.2 mu m CMOS
Author :
Nishimura, K.A. ; Gray, P.R.
Author_Institution :
California Univ., Berkeley, CA, USA
Abstract :
A fully integrated, sampled-data, analog three-line (2H) Y/C (luminance/chrominance) separator for high-performance NTSC decoding is described. This function requires two 910-tap delay elements, implemented in fully differential, sequentially addressed, charge-based switched-capacitor analog RAM cells. Efforts to minimize cell size and complexity result in the use of a single-switch cell. The prototype Y/C separator, realized in 1.2- mu m CMOS, has an effective SNR of 51 dB and an active area of 11.7 mm/sup 2/, while dissipating less than 170 mW. In this prototype, less than 20% of the total area is consumed by storage capacitors, indicating that this approach will be competitive with scaled technologies.<>
Keywords :
CMOS integrated circuits; analogue processing circuits; colour television receivers; decoding; linear integrated circuits; switched capacitor filters; video signals; 1.2 micron; 170 mW; 910-tap delay elements; CMOS; NTSC decoding; SNR; analog RAM cells; charge-based switched-capacitor; fully differential; luminance/chrominance separator; monolithic analog video comb filter; prototype Y/C separator; sampled-data; sequentially addressed; single-switch cell; three-line separator; Capacitors; Circuits; Clocks; Delay lines; Filters; Operational amplifiers; Parasitic capacitance; Particle separators; Sampling methods; Switches;
Conference_Titel :
Solid-State Circuits Conference, 1993. Digest of Technical Papers. 40th ISSCC., 1993 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0987-1
DOI :
10.1109/ISSCC.1993.280097
