Fully differential analog comparator

Details Fully differential analog comparator Fully differential analog comparator

1988-07-01

1989-04-04

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

330257, 330288, G05F 324

Patent

active

048189294

ABSTRACT:
A novel fully differential analog comparator having cascaded gain stages powered by two buses. The two buses are powered by a current source and a variable gain current mirror responsive to the current source. The current source and the current mirror isolate the buses from external power and ground to achieve high power supply noise immunity. True and complementary outputs of the comparator are provided having an adjustable output common mode voltage to optimize the driving of subsequent logic gates responsive to the comparator.

REFERENCES:
patent: 4333058 (1982-06-01), Hoover
patent: 4477782 (1984-10-01), Swanson
patent: 4513252 (1985-04-01), Sano
patent: 4554515 (1985-11-01), Burson et al.
patent: 4618815 (1986-10-01), Swanson
patent: 4779059 (1988-10-01), Taki et al.

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