发明名称 |
Temperature compensated crystal oscillator |
摘要 |
A temperature compensated crystal oscillation circuit adapted to be contained within a small device package and providing an output frequency accuracy of approximately +/-2 ppm over a temperature range or less than 2 minutes per year over the temperature range. The device includes a crystal and a single integrated circuit wherein the integrated circuit has a temperature sensing circuit with a digital output, control circuitry, a memory circuit and a switched capacitor array for compensating the oscillation of the crystal oscillator over temperature.
|
申请公布号 |
US5994970(A) |
申请公布日期 |
1999.11.30 |
申请号 |
US19980046150 |
申请日期 |
1998.03.23 |
申请人 |
DALLAS SEMICONDUCTOR CORPORATION |
发明人 |
COLE, DOUGLAS GENE;BAGADE, RANGANATH;HUI, TITKWAN |
分类号 |
H03L1/02;(IPC1-7):H03B5/36 |
主分类号 |
H03L1/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|