Surface mount type temperature-compensated crystal oscillator

Details Surface mount type temperature-compensated crystal oscillator Surface mount type temperature-compensated crystal oscillator

2007-04-16

2008-12-30

Tran, Anh Q (Department: 2819)

Oscillators

With outer casing or housing

C331S069000, C331S158000, C331S10800D

Reexamination Certificate

active

07471162

ABSTRACT:
A temperature-compensated crystal oscillator for surface mounting wherein an IC chip into which is integrated a temperature-compensated device having an oscillating circuit and a temperature sensor, which supplies a compensation voltage to a variable-voltage capacitor element of the oscillating circuit, and which also has IC terminals disposed along two edges comprising at least diagonally opposite corner portions of one main surface that acts as a circuit function surface is affixed with the use of bumps to an inner base surface of a main container that is concave in section, and one edge portion of a crystal piece is affixed to an inner wall step portion of the main container; wherein an active element of the oscillating circuit that acts as a heat source and a temperature sensor of the temperature-compensated device are disposed at diagonally opposite corner regions of the IC chip at the greatest distance apart. In addition, IC terminals for thermal dissipation are provided in a central region of the IC chip. The present invention provides a temperature-compensated oscillator for surface mounting in which the temperature-compensation operation at startup is satisfactory and frequency stability is maintained.

REFERENCES:
patent: 6798307 (2004-09-01), Mizumura et al.
patent: 2004/0056566 (2004-03-01), Rubach
patent: 2003-101348 (2003-04-01), None

Affiliated with

Also associated with

Rating

Surface mount type temperature-compensated crystal oscillator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface mount type temperature-compensated crystal oscillator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface mount type temperature-compensated crystal oscillator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4040067