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
-
申请号： US158548申请日： 1993-11-29
-
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).
公开/授权文献
- US4926885A Method of selecting medication and medical equipment 公开/授权日：1990-05-22