Integrated comparator circuit

Details Integrated comparator circuit Integrated comparator circuit

1996-07-12

1998-11-10

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 78, 327 80, 327 81, H03K 5153

Patent

active

058349545

ABSTRACT:
An integrated comparator circuit includes a first terminal and a second terminal for an operating voltage. An input stage has two complementary MOSFETS having main current paths connected in series defining a common connecting point therebetween. The two MOSFETS have gate terminals connected to the common connecting point. The series circuit of the MOSFETS is connected between the first terminal and a third terminal. An inverter stage has two complementary MOSFETS having main current paths connected in series defining a common connecting point therebetween forming an output terminal. The two complementary MOSFETS have gate terminals connected to the common connecting point of the input stage. The second terminal and the third terminal receive an input signal of the comparator circuit. A fourth terminal is provided for application of a reference potential to determine a switching threshold of the comparator circuit. The reference potential has a level between potentials of the first terminal and the second terminal. The series circuit of the MOSFETs of the inverter stage is connected between the first terminal and the fourth terminal. Each of the MOSFETs of the same channel type are identical.

REFERENCES:
patent: 4160176 (1979-07-01), Takahashi
patent: 5345111 (1994-09-01), Fong
patent: 5434521 (1995-07-01), Leipold et al.
patent: 5467039 (1995-11-01), Bae

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