Low-noise programmable current source

Details Low-noise programmable current source Low-noise programmable current source

2006-07-31

2008-09-16

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

With particular solid state devices

C341S136000, C341S144000

Reexamination Certificate

active

07425909

ABSTRACT:
A low-noise programmable current source includes an output digital to analog converter for providing an output load current; and a control circuit, responsive to an input defining a predetermined load current for generating, for the digital to analog converter, a control word and a control voltage; the control word and the control voltage drive the digital to analog converter to produce the predetermined load current and the control voltage sets the compliance voltage of the digital to analog converter to minimize current noise in the digital to analog converter.

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A. Jerng, et al., “The Impact of Device Type and Sizing on Phase Noise Mechanisms,” IEEE J. Solid-State Circuits, vol. 40, No. 2, pp. 360-369, Feb. 2005.

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