Current mirror with improved input voltage headroom

Details Current mirror with improved input voltage headroom Current mirror with improved input voltage headroom

1993-04-27

1995-02-28

Skudy, R.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

323316, G05F 316, G05F 320

Patent

active

053940792

ABSTRACT:
A novel current mirror is taught which provides improved input voltage headroom. The current mirror provides for the ratioed current mirroring of an input current supplied by a current source while providing an increased voltage level to that current source as compared with prior art current mirrors. This provides a significant improvement over prior art current mirrors which are likely to provide an insufficiently high voltage level to the current source to allow its proper operation, particularly with the trend toward lower supply voltages.

REFERENCES:
patent: 4008441 (1977-02-01), Schade, Jr.
patent: 4525682 (1985-06-01), Lai et al.
patent: 4808847 (1989-02-01), Van Kessel
patent: 4937515 (1990-06-01), Yoshino
National Semiconductor Paper entitled "LM105/LM205/LM305/LM305A, LM376 Voltage Regulators", National Semiconductor Corp., Santa Clara, Calif., (Apr. 1993).
Advances in BiMOS Integrated Circuits, Schade, Jr., RCA Review, vol. 30, Jun. 1978.

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