Margin tracking cascode current mirror system and method

Details Margin tracking cascode current mirror system and method Margin tracking cascode current mirror system and method

2007-09-04

2007-09-04

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

C323S315000

Reexamination Certificate

active

11224760

ABSTRACT:
A margin tracking cascode current mirror system including a current mirror circuit having a current source device having a predetermined operating voltage for providing a current to a load, a cascode circuit interconnected between the current mirror and the load for controlling the output impedance of the system and for establishing a current control voltage, a cascode bias circuit for providing a forward bias to the cascode circuit, and a compound cascode bias circuit for independently controlling the slope and the offset of the current control voltage to track the predetermined operating voltage with a predetermined margin.

REFERENCES:
patent: 6169456 (2001-01-01), Pauls
patent: 6646481 (2003-11-01), Blankenship et al.
patent: 6809590 (2004-10-01), Wong et al.

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