发明授权
US6037838A Amplifier with programmable gain and input linearity usable in
high-frequency lines
有权
具有可编程增益和输入线性度的放大器可用于高频线路
- 专利标题: Amplifier with programmable gain and input linearity usable in high-frequency lines
- 专利标题(中): 具有可编程增益和输入线性度的放大器可用于高频线路
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申请号: US264296申请日: 1999-03-08
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公开(公告)号: US6037838A公开(公告)日: 2000-03-14
- 发明人: Stefano Marchese , Valerio Pisati , Salvatore Portaluri , Alessandro Savo
- 申请人: Stefano Marchese , Valerio Pisati , Salvatore Portaluri , Alessandro Savo
- 申请人地址: ITX Agrate Brianza
- 专利权人: Stmicroelectronics S.r.l.
- 当前专利权人: Stmicroelectronics S.r.l.
- 当前专利权人地址: ITX Agrate Brianza
- 优先权: EPX98830192 19980331
- 主分类号: H03G1/00
- IPC分类号: H03G1/00 ; H03G7/06 ; H03F3/45 ; H03G7/00
摘要:
An amplifier with programmable gain and input linearity at high frequency allows an increase in the gain without effecting input linearity and without significantly increasing current consumption. The amplifier includes an input stage which receives a voltage signal for performing a current conversion thereof with compression. An output stage is connected to the input stage and decompresses the signal provided by the input stage for producing gain amplification thereof. The amplifier further includes at least one current amplifier stage interposed between the input stage and the output stage. The at least one current amplifier includes at least one bipolar transistor series-connected to a load diode and to a current source. A reduction in the transconductance of the load diode is provided in the at least one amplifier stage to determine a programmable gain factor for the amplifier.
公开/授权文献
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