Title:
発振周波数調整回路
Document Type and Number:
Japanese Patent JP5872493
Kind Code:
B2
Abstract:
According to one embodiment, a first oscillator has an oscillation frequency that is changed depending on a temperature. A second oscillator has different temperature characteristics from the first oscillator. An on-chip heater heats the first oscillator and the second oscillator. A counter counts a first oscillation signal of the first oscillator. An ADPLL generates a third oscillation signal on the basis of a second oscillation signal of the second oscillator and corrects the frequency of the third oscillation signal on the basis of a count value of the counter.
Inventors:
Shohei Kasai
Yuji Sato
Hiroyuki Kobayashi
Yuji Sato
Hiroyuki Kobayashi
Application Number:
JP2013001235A
Publication Date:
March 01, 2016
Filing Date:
January 08, 2013
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H03K3/03; H03L1/02; H03L7/08
Domestic Patent References:
| JP2013051676A | ||||
| JP2007060649A | ||||
| JP2004201280A | ||||
| JP2002076886A | ||||
| JP2009021954A | ||||
| JP2000509219A | ||||
| JP6058623U |
Foreign References:
| US7619486 |
Attorney, Agent or Firm:
Sakai International Patent Office