CONTROL CIRCUITRY - FUJITSU MICROELECTRONICS LTD

Title:

CONTROL CIRCUITRY

Document Type and Number:

Japanese Patent JP2010119074

Kind Code:

A

Abstract:

To provide a control circuitry which corrects a temperature drift possibly occurring to a synthesizer during a continuous operation.

The control circuitry comprises: first control means operable to generate a first control signal, the first control signal being indicative of a relationship between an output signal and a first reference signal, and to generate the output signal in dependence upon the first control signal, the first control means being configured to tend to maintain a first desired relationship between the output signal and the first reference signal in response to the first control signal; and second control means configured to influence operation of the first control means in response to the first control signal by way of a second control signal so as to tend to maintain a second desired relationship between first control signal and a second reference signal.

More Like This:

JP2002076856	BIAS SIGNAL GENERATING CIRCUIT, DELAY CIRCUIT, OSCILLATION CIRCUIT AND CLOCK GROUP GENERATING CIRCUIT
JP2002271193	PHASE-LOCKED OSCILLATOR AND COMMUNICATION DEVICE
JP4288425	PLL circuit

Inventors:

MARTON WALTER
GERMANN BERND

Application Number:

JP2009000452A

Publication Date:

May 27, 2010

Filing Date:

January 05, 2009

Export Citation:

Click for automatic bibliography generation Help

Assignee:

FUJITSU MICROELECTRONICS LTD

International Classes:

H03L7/099; H03L1/02

Attorney, Agent or Firm:

Atsushi Aoki
Koichi Itsubo
Higuchi Souji
Masami Enohara
Kurachi Yasuyuki
Ryu Kobayashi

Previous Patent: DIVIDER CIRCUITRY

Next Patent: PHASE DETECTOR CIRCUITRY