发明授权
US5428319A Method and apparatus for providing a modified temperature compensation
signal in a TCXO circuit
失效
用于在TCXO电路中提供修改的温度补偿信号的方法和装置
- 专利标题: Method and apparatus for providing a modified temperature compensation signal in a TCXO circuit
- 专利标题(中): 用于在TCXO电路中提供修改的温度补偿信号的方法和装置
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申请号: US158548申请日: 1993-11-29
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公开(公告)号: US5428319A公开(公告)日: 1995-06-27
- 发明人: Dennis F. Marvin , Daniel J. Russell
- 申请人: Dennis F. Marvin , Daniel J. Russell
- 申请人地址: IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: IL Schaumburg
- 主分类号: H03B5/32
- IPC分类号: H03B5/32 ; H03L1/00 ; H03L1/02
摘要:
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).
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