发明名称 |
CAPACITIVE LEVEL-SHIFTING CIRCUITS AND METHODS FOR ADDING DC OFFSETS TO OUTPUT OF CURRENT-INTEGRATING AMPLIFIER |
摘要 |
Capacitive level-shifting circuits and methods are provided for adding DC offsets to the output of a current-integrating amplifier. For example, a current-integrating amplifier includes an input amplifier stage and an output offset circuit. The input amplifier stage includes an input node, a first output node, and a first switch connected between the first output node and a power supply node. The output offset circuit is connected to the first output node of the input amplifier stage and to a second output node of the current-integrating amplifier. The output offset circuit includes a first series capacitor coupled between the first output node of the input amplifier stage and the second output node of the current-integrating amplifier. The output offset circuit switchably connects a bias voltage to the second output node and charges the first series capacitor to add a DC offset to the second output node of the current-integrating amplifier.
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申请公布号 |
US2013214865(A1) |
申请公布日期 |
2013.08.22 |
申请号 |
US201213399054 |
申请日期 |
2012.02.17 |
申请人 |
BULZACCHELLI JOHN F.;CLEMENTS STEVEN M.;RYLOV SERGEY V.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BULZACCHELLI JOHN F.;CLEMENTS STEVEN M.;RYLOV SERGEY V. |
分类号 |
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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