发明授权
- 专利标题： High swing operational transconductance amplifier
- 专利标题（中）： 高摆幅运算跨导放大器
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申请号： US472申请日： 1993-01-05
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公开(公告)号： US5323120A公开(公告)日： 1994-06-21
- 发明人: Marc H. Ryat
- 申请人： Marc H. Ryat
- 申请人地址： TX Carrollton
- 专利权人： SGS-Thomson Microelectronics, Inc.
- 当前专利权人： SGS-Thomson Microelectronics, Inc.
- 当前专利权人地址： TX Carrollton
- 主分类号： H03F3/45
- IPC分类号： H03F3/45
摘要：
A differential input stage for an operational transconductance amplifier is provided with complementary input transistor pairs. For each pair, a diode dummy load is provided. When the common mode input signal is near the positive or negative supply voltage, one of the pairs turns off. The diode loads act to increase the current through the other pair when this occurs. This results in the provision of a constant transconductance over the entire common mode input range.
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