发明名称 |
High speed high current gain operational amplifier |
摘要 |
An operational amplifier having a low impedance input and a high current gain output. The operational amplifier comprises: 1) a first N-channel transistor having a source coupled to the low impedance input of the operational amplifier; 2) a first constant current source coupled between the source of the first N-channel transistor and ground; 3) a first amplifier stage having an input coupled to the first N-channel transistor source and an inverting output coupled to a gate of the first N-channel transistor; 4) a second amplifier stage having an input coupled to a drain of the first N-channel transistor and an output coupled to the high current gain output of the operational amplifier; and 5) an internal compensation capacitor coupled between the input and the output of the second amplifier stage.
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申请公布号 |
US6937104(B1) |
申请公布日期 |
2005.08.30 |
申请号 |
US20030668364 |
申请日期 |
2003.09.22 |
申请人 |
NATIONAL SEMICONDUCTOR CORPORATION |
发明人 |
VARADARAJAN DEVNATH;LEWICKI LAURENCE D. |
分类号 |
H03F3/345;H03F3/347;H03F3/68;(IPC1-7):H03F3/04 |
主分类号 |
H03F3/345 |
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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