发明名称 |
Operational amplifier circuit, sample/hold circuit and filter circuit using the operational amplifier circuit |
摘要 |
An operational amplifier circuit is constituted by first and second inverted amplifier circuits (A1, A2) that receive first and second input signals, a third inverted amplifier circuit (A3) that receives an estimated common-mode output signal and an output signal from the first inverted amplifier circuit and outputs first and second output signals, a fourth inverted amplifier circuit (A4) that receives the estimated common-mode output signal and an output signal from the second inverted amplifier circuit and outputs third and fourth output signals, where the estimated common-mode output signal is generated by adding the second output signal and the fourth output signal, and first and second non-inverted amplifier circuits (A5, A6) that receive the estimated common-mode output signal and feed it back to the first and second inverted amplifier circuits.
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申请公布号 |
US2004246049(A1) |
申请公布日期 |
2004.12.09 |
申请号 |
US20040811908 |
申请日期 |
2004.03.30 |
申请人 |
ITAKURA TETSURO;YAMAJI TAKAFUMI |
发明人 |
ITAKURA TETSURO;YAMAJI TAKAFUMI |
分类号 |
G11C27/02;H03F3/45;H03F3/68;(IPC1-7):H03F3/45 |
主分类号 |
G11C27/02 |
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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