Method and apparatus for providing a modified temperature compensation signal in a TCXO circuit
US5428319A · kind A · utility
104Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Nov 29, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L1/025
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A modified temperature compensation signal (110) is provided in a temperature compensated crystal oscillator (TCXO) circuit (100) in the following manner. A temperature dependent current generator (104) produces a temperature compensation signal (108) whose amplitude changes responsive to changes in ambient temperature. The temperature compensation signal (108) is scaled, based on a plurality of discrete frequency adjust values (212), to produce the modified temperature compensation signal (110).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.