发明名称 |
Apparatus and method for producing a temperature-independent current signal in an automatic gain control circuit |
摘要 |
A circuit particularly useful in AGC systems, produces an output current which is proportional to the difference between a signal voltage and a reference voltage which is practically independent of temperature. By being a function of a ratio among actual values of integrated resistances and of a ratio among substantially temperature-stable voltages. The effects of temperature dependent value of integrated resistances and of temperature-dependent electrical characteristics of integrated semiconductor devices are compensated in order to produce the desired temperature-independent output current which may usefully be utilized for implementing an automatic gain control.
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申请公布号 |
US5352944(A) |
申请公布日期 |
1994.10.04 |
申请号 |
US19930041517 |
申请日期 |
1993.04.01 |
申请人 |
SGS-THOMSON MICROELECTRONICS S.R.L. |
发明人 |
SACCHI, FABRIZIO;ZUFFADA, MAURIZIO;VAI, GIANFRANCO;MOLONEY, DAVID |
分类号 |
H03F1/30;G05F3/22;H03F3/343;H03F3/347;H03F3/45;H03G1/00;H03G1/04;(IPC1-7):H03F3/45 |
主分类号 |
H03F1/30 |
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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