发明名称 |
Temperature compensation circuit. |
摘要 |
<p>A temperature compensation circuit is disclosed which has a monolithic integrated circuit with at least one integrated resistor (R84) having a first temperature coefficient, and an integrated bias circuit containing a pair of cross-coupled transistors (Q178, Q179). The temperature compensation circuit generates a compensating current (IS) through a resistor (RS) external to the integrated circuit, and having a second temperature coefficient different from the first temperature coefficient. The temperature compensation circuit includes a circuit (R76, 408) for passing a temperature-varying current (It) through the integrated resistor (R84) to generate a first temperature-varying voltage (VA). The bias circuit (Q178, Q179) is connected to the integrated resistor (R84) and the external resistor (RS) so that a second temperature-varying voltage (VB) is impressed across the external resistor (RS), which second temperature-varying voltage (VB) is proportional to the first temperature-varying voltage (VA) and generates the compensating current (IS) through the external resistor (RS). <IMAGE></p> |
申请公布号 |
EP0481967(A2) |
申请公布日期 |
1992.04.22 |
申请号 |
EP19920200032 |
申请日期 |
1987.11.27 |
申请人 |
ANALOG DEVICES, INCORPORATED |
发明人 |
BARROW, JEFFREY GEORGE;BROKAW, ADRIAN PAUL |
分类号 |
G01R31/28;G04F1/00;G05F1/567;G05F3/22;H03K4/50;H03K5/00;H03K5/13;H03M1/06;H03M1/08;H03M1/56;H03M1/78 |
主分类号 |
G01R31/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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