Ring oscillator having its output amplified in a comparator

Details Ring oscillator having its output amplified in a comparator Ring oscillator having its output amplified in a comparator

1995-12-18

1997-02-25

Grimm, Siegfried H.

Oscillators

Ring oscillators

331 74, 331108A, 331173, H03B 502

Patent

active

056062923

ABSTRACT:
A ring oscillator for a semiconductor device comprising a ring oscillation circuit for generating a pulse signal according to a logic state of a control signal, the pulse signal having a predetermined period and a reduced operating voltage level, a comparator for comparing the pulse signal from the ring oscillation circuit with a reference voltage signal according to the logic state of the control signal and amplifying it in accordance with the compared result, and a driver for buffering an output signal from the comparator. The ring oscillation circuit includes an inverter chain for supplying the pulse signal with the reduced operating voltage level. According to the present invention, power consumption can significantly be reduced in the ring oscillation circuit.

REFERENCES:
patent: 5442325 (1995-08-01), Bosshart

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