Voltage and temperature compensated ring oscillator frequency st

Details Voltage and temperature compensated ring oscillator frequency st Voltage and temperature compensated ring oscillator frequency st

1999-03-01

2000-07-25

Grimm, Siegfried H.

Oscillators

Ring oscillators

331176, 365222, H03B 504, G11C 722

Patent

active

060941049

ABSTRACT:
An integrated circuit includes a ring oscillator with a frequency stabilizing circuit. The frequency stabilizing circuit produces compensated voltage signals in response to changes in supply voltage and temperature to modify the conductances of field-effect transistors of the frequency stabilizing circuit to compensate the conductive path of the discharge current of a capacitor from the ring oscillator in order to stabilize the oscillation frequency.

REFERENCES:
patent: 5072197 (1991-12-01), Anderson
patent: 5180995 (1993-01-01), Hayashi et al.
patent: 5352945 (1994-10-01), Casper et al.
patent: 5544120 (1996-08-01), Kuwagata et al.

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