US Patent No: 5,952,874
Number of patents in Portfolio can not be more than 2000
Threshold extracting method and circuit using the same
Stats
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Sep 14, 1999
Issued date -
Dec 19, 1995
filing date -
08/574,491
serial no -
In Force
status
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Abstract
A transistor threshold extraction circuit having an output and including a first and a second transistor of the same type each having a control terminal and having essentially the same threshold voltage, the control terminal of the first transistor being connected to a constant potential node, a current mirror having at least one input terminal and one output terminal coupled respectively to said first and second transistors to provide bias currents, a first and a second potential reference, and a voltage divider having an intermediate tap and first and second end terminals. The control terminal of the second transistor is coupled to the intermediate tap and the divider is biased by coupling the first and the second end terminals respectively to the first and second potential references. The output is coupled to one of said end terminals.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,300,813 Refractory metal capped low resistivity metal conductor lines and vias | 110 | 1992 | |
| 5,463,339 Amorphous, thin film transistor driver/receiver circuit with hysteresis | 7 | 1994 | |
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| 5,289,425 Semiconductor integrated circuit device | 13 | 1992 | |
| 5,448,190 Voltage-to-current conversion circuit utilizing mos transistors | 6 | 1994 | |
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| 5,672,960 Threshold extracting method and circuit using the same | 9 | 1995 | |
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| 5,426,616 Semiconductor IC device having a voltage conversion circuit which generates an internal supply voltage having value compensated for external supply voltage variations | 62 | 1994 | |
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| 5,594,382 Constant voltage circuit | 18 | 1995 | |
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| 5,514,948 Reference voltage generating circuit | 13 | 1993 | |
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| 5,493,205 Low distortion differential transconductor output current mirror | 20 | 1995 | |
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| 5,545,970 Voltage regulator circuit having adaptive loop gain | 10 | 1994 | |
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| 5,467,052 Reference potential generating circuit utilizing a difference in threshold between a pair of MOS transistors | 24 | 1994 | |
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| 5,585,765 Low power RC oscillator using a low voltage bias circuit | 12 | 1995 | |
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| 4,994,730 Current source circuit with complementary current mirrors | 8 | 1989 | |
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| 5,568,084 Circuit for providing a compensated bias voltage | 40 | 1994 | |