CMOS comparator circuit and method of manufacture

Details CMOS comparator circuit and method of manufacture CMOS comparator circuit and method of manufacture

1976-10-12

1978-02-21

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307240, 307355, 357 23, 357 41, H03K 1760, H01L 2978, H01L 2708, H03K 1716

Patent

active

040755096

ABSTRACT:
A chopper stabilized comparator which compares two low level DC signals, and converts these signals to an AC signal which is amplified by AC amplifiers. The AC amplifier output is proportional to the difference between the two DC signals. The circuit has the advantage that it does not have any DC offset terms, for example, it does not drift with temperature.
The comparator is implemented in CMOS technology wherein the actual physical layout of the circuit is chosen such that changes in mask orientation during the fabrication process have no effect upon the proper operation of the circuit.

REFERENCES:
patent: 3641405 (1972-02-01), Brown et al.
patent: 3652906 (1972-03-01), Christensen
patent: 3747200 (1973-07-01), Rutledge
patent: 3813586 (1974-05-01), Conner
patent: 3983414 (1976-09-01), Stafford et al.
patent: 4004157 (1977-01-01), Baertsch et al.

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