Integrated buffer circuit which functions independently of fluct

Details Integrated buffer circuit which functions independently of fluct Integrated buffer circuit which functions independently of fluct

1996-04-04

1998-06-30

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

323315, G05F 110

Patent

active

057740143

ABSTRACT:
An integrated buffer circuit includes a first series circuit connected between a first supply potential and a second supply potential (ground). The first series circuit has a voltage-controlled first constant current source, a first field effect transistor having a gate forming an input of the buffer circuit, a circuit node between the first current source and the first field effect transistor forming an output of the buffer circuit, and a first control input for controlling the first current source with a reference potential having a constant potential difference relative to the first supply potential. A second series circuit is connected between the first supply potential and the second supply potential. The second series circuit has a first resistor, a second constant current source furnishing a current being independent of the first supply potential, and a circuit node between the first resistor and the second current source, establishing the reference potential and being connected to the first control input of the first current source.

REFERENCES:
patent: 4723108 (1988-02-01), Murphy et al.
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patent: 5278460 (1994-01-01), Casper
patent: 5434534 (1995-07-01), Lucas
patent: 5455527 (1995-10-01), Murphy et al.
patent: 5469104 (1995-11-01), Smith et al.
patent: 5481179 (1996-01-01), Keeth
patent: 5488328 (1996-01-01), Ludwig et al.
patent: 5565811 (1996-10-01), Park et al.

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