Photocurrent compensation using active devices

Details Photocurrent compensation using active devices Photocurrent compensation using active devices

1989-02-09

1990-01-02

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

307311, 330277, 330308, H03F 308

Patent

active

048916064

ABSTRACT:
A current mirror having an amplification factor K providing a photocurrent compensation current to a node having a mismatch of junction photocurrent. The load device on the input leg of the current mirror has an area 1/K times the device width of the larger device junction area at the node and a device width ratio with drive device of the input leg of a current mirror equal to the ratio of mismatch J at the node.

REFERENCES:
patent: 4380741 (1983-04-01), Mazgy

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