Current control mechanism for low voltage applications

Details Current control mechanism for low voltage applications Current control mechanism for low voltage applications

2010-06-07

2011-11-08

Rodriguez, Armando (Department: 2828)

Amplifiers

Output networks

C330S250000, C330S254000

Reexamination Certificate

active

08054128

ABSTRACT:
A current control mechanism for use in low power consumption circuits with limited headroom includes a differential transistor pair from whose collectors a current output is taken. The current output is a function of a reference voltage provided at bases of a reference transistor pair having emitters that are coupled to the bases of the differential pair. The reference voltage is controlled by a pair of control transistors that control current through a load. A pair of tracking transistors can be provided to track supply voltage. A single-ended topology can also be implemented.

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