Fast settling capacitive gain amplifier circuit |
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| 申请号 | US15600484 | 申请日 | 2017-05-19 | 公开(公告)号 | US10044327B2 | 公开(公告)日 | 2018-08-07 |
| 申请人 | Analog Devices Global; | 发明人 | Hanqing Wang; Gerard Mora-Puchalt; | ||||
| 摘要 | A capacitive gain amplifier circuit includes two sets of Miller capacitors and two output stage differential amplifier circuits. A first set of Miller capacitors is used to compensate the first output stage differential amplifier circuit during a first phase that resets the first output stage differential amplifier circuit. The second set of Miller capacitors is used to compensate the first output stage differential amplifier circuit during a second phase that chops a signal being amplified. The second set of Miller capacitors is swapped from one polarity to an opposite polarity of the first output stage differential amplifier circuit during successive second phases. The second output stage differential amplifier circuit includes a set of inputs selectively coupled with the inputs of the first output stage differential amplifier circuit and a set of outputs selectively coupled with the outputs of the first output stage differential amplifier circuit during the second phase. | ||||||
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| 说明书全文 | |||||||
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