Merged integrated oscillator circuit

Details Merged integrated oscillator circuit Merged integrated oscillator circuit

1987-01-02

1988-03-29

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331108D, H03B 524

Patent

active

047346566

ABSTRACT:
An oscillator is disclosed including a current mirror which is alternately enabled and disabled by a control signal and having an output and an input to which first and second currents are sourced and a capacitor which is coupled to the output of the current mirror. When the current mirror is enabled the capacitor is discharged through the current mirror to a first voltage level and is charged at substantially the same rate to a second voltage level when the current mirror is disabled. A merged two comparator structure having an input coupled to the output of the current mirror switches output level states at first and second outputs in response to the capacitor being charged and then discharged to said second and first voltage levels. A merged latch and load circuit coupled to the outputs of the merged two comparators is responsive to the output level states of the latter for providing said control signal to the input of the current mirror.

REFERENCES:
patent: 3659224 (1972-04-01), Ball
patent: 3886485 (1975-05-01), Takahashi
patent: 4377790 (1983-03-01), Zobel et al.

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