发明名称 |
Current source having voltage stabilizing element |
摘要 |
A current source including a current mirror circuit and an active load circuit which form a reference branch, for setting a reference current value, and a mirroring branch, defining an output current value, connected between supply and ground. A voltage stabilizing transistor is interposed between the current mirror circuit and the load circuit in the reference branch only, and is so biased as to maintain its gate terminal at a predetermined voltage. As such, the potential with respect to ground of the drain terminal of the reference branch load transistor is fixed, so that its drain-source voltage drop (and the current through it) is substantially independent of supply voltage. The current source may be used to advantage in an oscillator for generating the: clock signal of a nonvolatile memory.
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申请公布号 |
US5546054(A) |
申请公布日期 |
1996.08.13 |
申请号 |
US19950377524 |
申请日期 |
1995.01.20 |
申请人 |
SGS-THOMSON MICROELECTRONICS S.R.L. |
发明人 |
MACCARRONE, MARCO;OLIVO, MARCO;GOLLA, CARLA M. |
分类号 |
G11C17/00;G05F3/24;G05F3/26;H03F1/30;(IPC1-7):H03B5/24;G05F3/16;H03K3/011;H03K3/03 |
主分类号 |
G11C17/00 |
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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