发明名称 |
Differential stage particularly for active filters |
摘要 |
Differential stage comprising a high input dynamic range differential circuit formed by first and second transistors whose emitter electrodes are connected together and to a constant current source through respective resistors, their base electrodes having an input signal applied thereto, and their collector electrodes supplying respective collector currents. The stage further comprises a dual-single converter circuit receiving the collector currents at its input and supplying a stage output current, said converter circuit including at least one variable current source and having a conversion factor which varies as a function of the variable source current.
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申请公布号 |
US4661780(A) |
申请公布日期 |
1987.04.28 |
申请号 |
US19840612486 |
申请日期 |
1984.05.21 |
申请人 |
SGS-ATES COMPONENTI ELETTRONICI SPA |
发明人 |
SILIGONI, MARCO;MURARI, BRUNO |
分类号 |
H03F3/45;H03G1/00;H03H11/04;(IPC1-7):H03F3/45 |
主分类号 |
H03F3/45 |
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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