发明名称 |
Integrated unit gain output stage |
摘要 |
The operation of externally connected output power transistors of a class AB amplifier is controlled without employing any external sensing resistance of the output current by driving an externally connected power transistor through a level shifting buffer and employing a limiting network composed of an integrated transistor driven by the output of a signal amplifying stage and a resistance connected in series with its drain. The buffer stage shifts the level of the driving signal of the external power transistor by a value equal to the threshold voltage of the integrated transistor of the limiting network thus ensuring the turn-off of the external power transistor under quiescent conditions.
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申请公布号 |
US6150853(A) |
申请公布日期 |
2000.11.21 |
申请号 |
US19950394688 |
申请日期 |
1995.02.27 |
申请人 |
SGS-THOMSON MICROELECTRONICS S.R.L. |
发明人 |
CHRAPPAN, FRANCESCO;NESSI, MAURIZIO;SALINA, ALBERTO |
分类号 |
H03F3/20;H02P25/02;H03F1/32;H03F3/30;H03F3/347;(IPC1-7):H03K3/00 |
主分类号 |
H03F3/20 |
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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