发明名称 |
Offset correction in operational amplifiers |
摘要 |
A circuit which includes an operational amplifier (101) and includes switches (104, 106) for cancelling offset buildup in the amplifier in response to a circuit (110) which detects zero crossings of the input signal. Where the frequency of the input is higher than the frequency at which cancellation is necessary, circuit (110) may respond only to the zero crossing next following each of a regularly occurring series of timing pulses.
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申请公布号 |
US4297642(A) |
申请公布日期 |
1981.10.27 |
申请号 |
US19790089851 |
申请日期 |
1979.10.31 |
申请人 |
BELL TELEPHONE LABORATORIES, INCORPORATED |
发明人 |
BALDWIN, GARY L.;MCCREARY, JAMES L. |
分类号 |
H03F1/30;(IPC1-7):H03F1/00 |
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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