发明申请
- 专利标题: Amplifier Circuits with Reduced Power Consumption
- 专利标题(中): 具有降低功耗的放大器电路
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申请号: US13476330申请日: 2012-05-21
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公开(公告)号: US20130307623A1公开(公告)日: 2013-11-21
- 发明人: Shagun Dusad , Lokesh Kumar Gupta , Visvesvaraya Pentakota
- 申请人: Shagun Dusad , Lokesh Kumar Gupta , Visvesvaraya Pentakota
- 申请人地址: US TX Dallas
- 专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人地址: US TX Dallas
- 主分类号: H03F3/45
- IPC分类号: H03F3/45
摘要:
Various embodiments of an amplifier circuit are provided. In one embodiment, the amplifier circuit includes an input differential circuitry configured to convert a pair of input differential voltage signals to a pair of differential current signals. The amplifier circuit includes a cascode circuitry operable to mirror the pair of differential current signals received from the first output terminal and the second output terminal to an output terminal of the first cascode transistor and an output terminal of the second cascode transistor. The amplifier circuit includes a current control circuit operable to divert an amount of bias current to reduce a current through the cascode circuitry, to thereby reduce a load of the amplifier circuit, the reduction in the load of the amplifier circuit allowing a reduction in current through the input differential circuitry for maintaining a predetermined bandwidth of the amplifier circuit.
公开/授权文献
- US08742845B2 Amplifier circuits with reduced power consumption 公开/授权日:2014-06-03
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