Low power bias circuit using FET as a resistor

Details Low power bias circuit using FET as a resistor Low power bias circuit using FET as a resistor

1996-04-15

1999-04-06

Ton, My-Trang Nu

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

323315, 327530, G05F 110, G05F 302

Patent

active

058923888

ABSTRACT:
A circuit is provided which generates a reference bias current using a difference in base-emitter voltages of two bipolar transistors imposed across a source terminal and a drain terminal of an MOS transistor. The circuit includes a circuit for compensating shifts in threshold voltage, and thus shifts in the current flowing therein, of the MOS transistor. In one embodiment, the bias circuit is configured to achieve superior efficiency in generating small bias currents. In another embodiment, the bias circuit is configured to operate using minimal voltage supplies. In all embodiments, the reference bias current generated thereby has a positive temperature coefficient and is substantially independent of process variations.

REFERENCES:
patent: 4425551 (1984-01-01), Blackmer et al.
patent: 4591739 (1986-05-01), Nagano
patent: 4792750 (1988-12-01), Yan
patent: 4855684 (1989-08-01), Gerstenhaber et al.
patent: 5132556 (1992-07-01), Cheng
patent: 5227714 (1993-07-01), Lou
patent: 5349308 (1994-09-01), Grasset
patent: 5350998 (1994-09-01), Marchio et al.
patent: 5525927 (1996-06-01), Yung et al.
patent: 5548233 (1996-08-01), Susak
patent: 5596265 (1997-01-01), Wrathall et al.
patent: 5598095 (1997-01-01), Schnaitter
patent: 5619160 (1997-04-01), Sirito-Olivier et al.

Affiliated with

Also associated with

Rating

Low power bias circuit using FET as a resistor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low power bias circuit using FET as a resistor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low power bias circuit using FET as a resistor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1374702