Surface mount type temperature-compensated crystal oscillator
US7394327B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2006 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Dec 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/1021
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface mount type temperature-compensated crystal oscillator includes a crystal blank; an IC chip integrating an oscillation circuit using the crystal blank and a temperature compensation mechanism of compensating frequency temperature characteristics of the crystal blank; and a substantially rectangular parallelepiped container body for surface mounting having a first recess of housing the crystal blank and a second recess of housing the IC chip. Respective side surfaces corresponding to the long sides of the container body are provided with crystal inspection terminals for inspecting oscillation characteristics of the crystal blank and respective side surfaces corresponding to the short sides are provided with data writing terminals for writing temperature compensation data to the temperature compensation mechanism. A conductive path electrically connecting the IC chip to the crystal inspection terminal is formed to be shorter than a conductive path electrically connecting the IC chip to the data writing terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.