Current mode output stage circuit with open loop DC offset...

Details Current mode output stage circuit with open loop DC offset... Current mode output stage circuit with open loop DC offset...

2005-11-15

2005-11-15

Ton, My-Trang Nu (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S066000

Reexamination Certificate

active

06965256

ABSTRACT:
An output stage circuit for a current mode device provides open loop reduction or cancellation of DC offset in differential output signals. Differential input signals are received and sourcing current mirrors provide mirrors of the differential input signals to output nodes. Sinking current mirrors also provide mirrors of opposite polarity of the differential input signals to the output nodes corresponding to the opposing sourcing current mirrors. The summing of the mirror currents at the output nodes substantially reduces or eliminates the DC offset components present in the input signals.

REFERENCES:
patent: 5886546 (1999-03-01), Hwang
patent: 6194921 (2001-02-01), Fujiwara

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