发明授权
US07999615B2 Current canceling variable gain amplifier and transmitter using same
有权
电流消除可变增益放大器和发射机使用相同
- 专利标题: Current canceling variable gain amplifier and transmitter using same
- 专利标题(中): 电流消除可变增益放大器和发射机使用相同
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申请号: US13008489申请日: 2011-01-18
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公开(公告)号: US07999615B2公开(公告)日: 2011-08-16
- 发明人: Petteri Matti Litmanen , Siraj Akhtar
- 申请人: Petteri Matti Litmanen , Siraj Akhtar
- 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
- 代理商 Ronald O. Neerings; Wade James Brady, III; Frederick J. Telecky, Jr.
- 主分类号: H03F3/45
- IPC分类号: H03F3/45
摘要:
A current canceling CMOS variable gain amplifier includes a first leg and a second leg. The first leg has a first input line, a first output line, a first ON transistor, a first control transistor and a first subtracting transistor. The second leg has a second input line, a second output line, a second ON transistor, a second control transistor and a second subtracting transistor. The second input line can provide a second input current. The second output line can provide a second output current. The first input line is arranged to provide a first input current to each of the first ON transistor, the first control transistor and the first subtracting transistor. The second input line is arranged to provide a second input current to each of the second ON transistor, the second control transistor and the second subtracting transistor. The first output line is in electrical connection with each of the first ON transistor, the first control transistor and the second subtracting transistor. The second output line is in electrical connection with each of the second ON transistor, the second control transistor and the first subtracting transistor.