Wide common mode range analog CMOS voltage comparator

Details Wide common mode range analog CMOS voltage comparator Wide common mode range analog CMOS voltage comparator

1983-11-03

1986-07-01

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307491, 307494, 307362, H03K 524

Patent

active

045982155

ABSTRACT:
An improved analog CMOS comparator circuit is described. The improved circuit incorporates an additional CMOS device in the output stage of a conventional differential comparator. The additional device compensates for current imbalances which occur at relatively high common mode voltages thus allowing the improved comparator to operate over a wider range of common mode input voltages.

REFERENCES:
patent: 3863171 (1975-01-01), Kawashima
patent: 3876887 (1975-04-01), Reed
patent: 3943380 (1976-03-01), Morgan et al.
patent: 4110641 (1978-08-01), Payne
patent: 4247789 (1981-01-01), Cate et al.
patent: 4264873 (1981-04-01), Kominami et al.
patent: 4371843 (1983-02-01), Fang et al.
"C-MOS Filter Cuts Part Count", Electronics, Mar. 10, 1983, p. 180.

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