JPS6458103A - Piezoelectric oscillator with temperature compensation - Google Patents
Piezoelectric oscillator with temperature compensationInfo
- Publication number
- JPS6458103A JPS6458103A JP21435987A JP21435987A JPS6458103A JP S6458103 A JPS6458103 A JP S6458103A JP 21435987 A JP21435987 A JP 21435987A JP 21435987 A JP21435987 A JP 21435987A JP S6458103 A JPS6458103 A JP S6458103A
- Authority
- JP
- Japan
- Prior art keywords
- temperature compensation
- circuit
- output
- fed
- code
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE:To facilitate temperature compensation by providing 1st and 2nd memory circuits storing a digital code respectively applying temperature compensation of 1st and 2nd change elements, an A/D converter receiving alternately the output, a switching circuit switching the input/output synchronously and two sample-hold circuits receiving the two outputs of said converter. CONSTITUTION:A temperature compensation digital code is fed to memory circuits 3, 13, and the output of the circuits 3, 13 is switched by a switching circuit 14, given to an A/D conversion circuit 4, its output is switched synchronously with the input. The two outputs are fed to a voltage controlled piezoelectric oscillator 5 via sample-hold circuits 19, 20. The circuit 3 uses said code as the address to store the frequency temperature compensation digital code corresponding thereto. When the ambient temperature varies, the address signal is changed and the code of the circuit 3 is read, converted into an analog signal and fed to a frequency control terminal 17 of the oscillator 5. The circuit 13 stores an output voltage temperature compensation digital code and when the ambient temperature charges, the address signal is changed, the code of the circuit 13 is read and converted into an analog signal and fed to the output voltage control terminal 18 of the oscillator 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21435987A JPS6458103A (en) | 1987-08-28 | 1987-08-28 | Piezoelectric oscillator with temperature compensation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21435987A JPS6458103A (en) | 1987-08-28 | 1987-08-28 | Piezoelectric oscillator with temperature compensation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6458103A true JPS6458103A (en) | 1989-03-06 |
Family
ID=16654477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21435987A Pending JPS6458103A (en) | 1987-08-28 | 1987-08-28 | Piezoelectric oscillator with temperature compensation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6458103A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61154206A (en) * | 1984-12-26 | 1986-07-12 | Nec Corp | Piezoelectric oscillator |
-
1987
- 1987-08-28 JP JP21435987A patent/JPS6458103A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61154206A (en) * | 1984-12-26 | 1986-07-12 | Nec Corp | Piezoelectric oscillator |
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