发明授权
- 专利标题： Temperature compensated decibel linear variable gain amplifier
- 专利标题（中）： 温度补偿分贝线性可变增益放大器
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申请号： US986481申请日： 1997-12-08
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公开(公告)号： US5994961A公开(公告)日： 1999-11-30
- 发明人: Gerald Lunn , Ka Hung Derek Wong , Jeff Ortiz , On Au-Yeung
- 申请人： Gerald Lunn , Ka Hung Derek Wong , Jeff Ortiz , On Au-Yeung
- 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： H03F1/30
- IPC分类号： H03F1/30 ; H03F3/45 ; H03G1/00 ; H03G1/04 ; H03G7/06
摘要：
A gain control signal (VCTRL) is provided to a temperature compensating circuit (12) which produces a differential temperature compensating gain control signal (VDT). A gain compensating circuit (14) receives the differential temperature compensating gain control signal (VDT) and provides a differential gain and temperature compensating gain control signal (VDTG) to an amplifier (16). The differential gain and temperature compensating gain control signal (VDTG) varies the gain of the amplifier (16) to be substantially linear with respect to variation of the gain control signal (VCTRL) and to compensate for variation in temperature.
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