发明名称 |
Method and system for variable-gain amplifier |
摘要 |
Method for a variable-gain amplifier (VGA). A plurality of attenuator nodes is serially connected via a first set of resistors between adjacent attenuator nodes to form an attenuator ladder and coupled to an AC input of the variable-gain amplifier. Each of the attenuator nodes includes a transistor and an RC circuitry that couples drain, gate, and source terminals of the transistor to a control signal for the attenuator node. The VGA also includes an amplifier that has an output produced based on an input to the amplifier connected to a plurality of coupled terminals, each of which is respectively from one of the plurality of attenuator nodes. The RC circuitry for each attenuator node is configured to pass a control signal to the gate terminal of the transistor of the attenuator node in accordance with a first time scale and permit the gate terminal to float in accordance with a second time scale so as to yield a reduction of distortion contributed by the transistor while the transistor is transitioning between on and off states.
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申请公布号 |
EP2190115(A2) |
申请公布日期 |
2010.05.26 |
申请号 |
EP20090176801 |
申请日期 |
2009.11.23 |
申请人 |
LINEAR TECHNOLOGY CORPORATION |
发明人 |
STRIFLIER, WALTER, ANDREW |
分类号 |
H03G1/00 |
主分类号 |
H03G1/00 |
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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