OSCILLATION CIRCUIT, ELECTRONIC CIRCUIT, SEMICONDUCTOR DEVICE, ELECTRONIC EQUIPMENT AND CLOCK

Title:

OSCILLATION CIRCUIT, ELECTRONIC CIRCUIT, SEMICONDUCTOR DEVICE, ELECTRONIC EQUIPMENT AND CLOCK

Document Type and Number:

WIPO Patent Application WO/1998/032218

Kind Code:

A1

Abstract:

An oscillation circuit includes a control circuit for controlling the source potential of a MOSFET constituting a signal inverting amplifier by using a substrate bias effect. This control circuit controls the threshold voltage of the MOSFET at a low level at the time of making a power source of the oscillation circuit, and controls the threshold voltage of the MOSFET at a high level after stabilization of oscillating operation at the oscillation circuit. Thus, stabilization of oscillating operation and lower power consumption of the oscillation circuit are enabled.

Inventors:

KADOWAKI TADAO (JP)
MAKIUCHI YOSHIKI (JP)
NAKAMIYA SHINJI (JP)

Application Number:

PCT/JP1998/000240

Publication Date:

July 23, 1998

Filing Date:

January 22, 1998

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)
KADOWAKI TADAO (JP)
MAKIUCHI YOSHIKI (JP)
NAKAMIYA SHINJI (JP)

International Classes:

G04F5/06; G04G19/06; G05F1/56; H03B5/04; H03B5/36; H03K3/011; H03K3/03; H03K3/354; (IPC1-7): H03B5/32; G04G3/00

Foreign References:

JPS5319065A	1978-02-21
JPS5437452A	1979-03-19
JPS5437670A	1979-03-20
JPH08204450A	1996-08-09
JPH05218740A	1993-08-27

Other References: