Chopper type comparator for an analog-to-digital converter

Details Chopper type comparator for an analog-to-digital converter Chopper type comparator for an analog-to-digital converter

1995-09-07

1996-08-13

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 90, 327 91, H03K 190175

Patent

active

055460283

ABSTRACT:
A chopper type comparator is disclosed and implements a differential configuration with inverter amplifiers each having a control terminal. The comparator, therefore, successfully cancels noise of the same phase while preventing a current from constantly flowing therethrough. The cancellation of noise of the same phase, coupled with differential signals, doubles the signal range in the same voltage range, compared to a single end configuration. Hence, a high resolution is achievable even when a power source voltage is low.

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A. Dingwall, "THAM 11.1: Monolithic Expandable 6b 15MHz CMOS/SOS A/D Converter", 1979 IEEE International Solid-State Circuits Conference, Feb. 15, 1979, pp. 126-127.

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