Low power temperature compensated crystal oscillator
US5481229A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1994 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Nov 29, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L1/023
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A temperature compensated crystal oscillator (10), has a crystal oscillator circuit (12), a voltage controlled reactance element (30), a temperature compensation network (50), and a programmable DC-DC converter network (60) having an output (62) connected to the voltage controlled reactance element (30), or the temperature compensation network (50) or both. The DC-DC converter network (60) provides the capability of operating over an extended voltage range, by increasing the supply voltage to a level necessary to operate the voltage controlled reactance element (30). Much of this structure is adapted for use in an integrated circuit, and provides the advantages of minimizing power and current consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.