Integratable comparator circuit with adjustable response thresho

Details Integratable comparator circuit with adjustable response thresho Integratable comparator circuit with adjustable response thresho

1996-08-19

1998-03-24

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 80, H03K 5153

Patent

active

057317216

ABSTRACT:
A comparator circuit includes a series circuit having a first MOSFET and a second MOSFET. An inverter has a third MOSFET and a fourth MOSFET. A node between the first and second MOSFETs is connected to a gate terminal of the fourth MOSFET. An input voltage is applied between ground and the second MOSFET. A series circuit of a fifth MOSFET and a Zener diode polarized in the blocking direction is connected parallel to the fourth MOSFET. A response threshold of the comparator circuit is defined by adjusting a resistance of the Zener diode occurring in the reverse direction. The resistance is adjusted through the use of a voltage pulse that can be applied to a terminal connected to a cathode of the Zener diode.

REFERENCES:
patent: 4463270 (1984-07-01), Gordon
patent: 4613768 (1986-09-01), Pommer, II
patent: 5083045 (1992-01-01), Yim et al.
patent: 5118968 (1992-06-01), Douglas et al.
patent: 5278458 (1994-01-01), Holland et al.
patent: 5434521 (1995-07-01), Leipold et al.
patent: 5512849 (1996-04-01), Wong

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