Voltage comparator with sample hold circuit

Details Voltage comparator with sample hold circuit Voltage comparator with sample hold circuit

1990-07-05

1992-11-17

Pellinen, A. D.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341122, 307355, H03M 134

Patent

active

051650584

ABSTRACT:
A chopper type voltage comparator, as used in analog-to-digital converters, includes an inverter with a switch coupled between the output and an input node and a capacitor coupling the input node to a comparator input node. A signal input terminal and at least one reference voltage input terminal are connected to the comparator input terminal by alternately operated switches. A sample hold circuit is connected to the comparator input node to overcome the effects of the switches on the reference voltage.

REFERENCES:
patent: 4097753 (1978-06-01), Cook et al.
patent: 4539551 (1985-09-01), Fujita
patent: 4691189 (1987-09-01), Dingwall et al.
patent: 4845383 (1989-07-01), Iida
patent: 4897655 (1990-01-01), Zazzu et al.

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