Amplitude limiting circuit

Details Amplitude limiting circuit Amplitude limiting circuit

2007-06-19

2007-06-19

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C326S115000, C327S089000

Reexamination Certificate

active

10944754

ABSTRACT:
An amplitude limiting value can be set to an intended value of a designer and the dependence of the amplitude limiting value on the temperature can be avoided. An amplitude limiting circuit according to the present invention includes a pair of first conductivity type MOS transistors provided in a diode-connected configuration, which is connected between one output terminal of a differential circuit and the other output terminal thereof, a first source follower circuit comprising second conductivity type first and second MOS transistors connected in series between a first power supply and a second power supply, a second source follower circuit comprising second conductivity type third and fourth MOS transistors connected in series between the first power supply and the second power supply, and a current supply circuit comprising a current source that outputs a current proportional to an absolute temperature and a resistor both of which are connected in series between the first power supply and the second power supply.

REFERENCES:
patent: 5227681 (1993-07-01), Koyama et al.
patent: 5384501 (1995-01-01), Koyama et al.
patent: 6531857 (2003-03-01), Ju
patent: 2004/0150464 (2004-08-01), Khalid
patent: 2001-127566 (2001-05-01), None

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