Supply voltage independent bandgap based reference generator cir

Details Supply voltage independent bandgap based reference generator cir Supply voltage independent bandgap based reference generator cir

1996-10-04

1998-09-22

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 73, 327538, 327539, 327541, 327543, G01R 1900

Patent

active

058119930

ABSTRACT:
A FET band-gap reference generating circuit having a two-branch differential amplifier with a saturation state FETs for equal branch current, independent of power supply voltage, with a feedback connection to a reference FET in one branch, for driving the steady state output to the threshold voltage of the reference FET, also independent of the power supply voltage. A multistage circuit connects a divided down output of a first FET band-gap reference generating circuit to a current bias terminal of similar second FET based differential amplifier so that the steady state output of the second amplifier is equal to the sum of the divided down output and a threshold voltage of a second reference FET in the second amplifier.

REFERENCES:
patent: 5162668 (1992-11-01), Chen et al.
patent: 5184033 (1993-02-01), Chiao et al.
patent: 5594373 (1997-01-01), McClure

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