Oscillation circuit and operation method thereof

Details Oscillation circuit and operation method thereof Oscillation circuit and operation method thereof

2006-10-10

2006-10-10

Kinkead, Arnold (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S111000, C331S143000, C331S144000, C331S03600C

Reexamination Certificate

active

07119626

ABSTRACT:
An oscillation circuit has: a first MOS transistor having a gate connected to a first node and a source connected to the ground; a second MOS transistor having a gate connected to a second node and a source connected to the ground; a current supply circuit supplying a control current; a threshold correction circuit supplying a correction current; and a charge-discharge circuit which supplies a charge current which is a superposition of the control current and the correction current to the first node and the second node alternately in response to potentials of drains of the first and the second MOS transistors. The threshold correction circuit increases the correction current as threshold voltages of the first and the second MOS transistors become large.

REFERENCES:
patent: 3946330 (1976-03-01), Takahashi
patent: 5896070 (1999-04-01), Tchamov et al.
patent: 62-274913 (1987-11-01), None

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