Claims
- 1. A voltage-current converter, comprising:a first current mirror including a first transistor and a second transistor each being designed such that under identical drive conditions a current flowing through said first transistor is greater than a current flowing through said second transistor by a predetermined factor, said current flowing through said second transistor being an output current of the voltage-current converter; a second current mirror including a first transistor and a second transistor; and a MOSFET connected in series with said first transistor of said first current mirror, said MOSFET having a gate connected to an input voltage; said first transistor of said first current mirror and said first transistor of said second current mirror being connected in series to a supply voltage; and said second transistor of said first current mirror and said second transistor of said second current mirror being connected in series to the supply voltage.
- 2. The voltage-current converter according to claim 1, wherein:a current flowing through said first transistor of said second current mirror is equal to a current flowing through said second transistor of said second current mirror.
- 3. The voltage-current converter according to claim 1, wherein:said first transistor of said first current mirror and said second transistor of said first current mirror are operated in weak inversion.
- 4. The voltage-current converter according to claim 1, wherein:said MOSFET has a threshold voltage such that a voltage-current characteristic starts at 0.
Priority Claims (1)
Number |
Date |
Country |
Kind |
00103077 |
Feb 2000 |
EP |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation of copending International Application No. PCT/DE01/00333, filed Jan. 26, 2001, which designated the United States and was not published in English.
US Referenced Citations (17)
Foreign Referenced Citations (3)
Number |
Date |
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0 337 444 |
Oct 1989 |
EP |
0 454 243 |
Oct 1991 |
EP |
0 740 243 |
Oct 1996 |
EP |
Non-Patent Literature Citations (1)
Entry |
Seifart, M.: “Analoge Schaltungen” [Analog Circuits], Verlag Technik GmbH, 1996, pp. 159-161. |
Continuations (1)
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Number |
Date |
Country |
Parent |
PCT/DE01/00333 |
Jan 2001 |
US |
Child |
10/219601 |
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US |