MOSFET comparator

Details MOSFET comparator MOSFET comparator

1974-09-11

1976-05-11

Rolinec, R. V.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

307235F, 330 22, 330 35, H03F 368

Patent

active

039567087

ABSTRACT:
A family of comparators are described which utilize only MOSFET transistors as the active devices. These comparators exhibit an infinite input impedance and zero input offset and bias currents. The circuits are capable of operating over a wide range of DC supply voltages at extremely low DC current drain. A comparator is shown which operates from a single positive DC supply voltage and which handles a wide range of input common mode (reference) voltages including some negative common mode voltages. Another comparator is shown which operates from a combination of a single positive and a single negative supply voltage and which handles a wide range of positive and negative input common mode voltage swings (references).

REFERENCES:
patent: 3581226 (1971-05-01), Perkins et al.
patent: 3676702 (1972-07-01), McGrogan, Jr.
patent: 3852679 (1974-12-01), Schade, Jr.

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