Digitally trimmed DAC cell

Details Digitally trimmed DAC cell Digitally trimmed DAC cell

2006-08-22

2006-08-22

Nguyen, Linh Van (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S153000, C341S154000

Reexamination Certificate

active

07095347

ABSTRACT:
A digitally trimmed current source. The novel current source includes a first circuit for generating a current in response to an applied voltage and a resistance variable in response to a control signal, and a second circuit for supplying the control signal. The first circuit includes a resistive network comprised of a plurality of resistors; a plurality of switches, each switch coupled to one of the resistors and adapted to selectively switch the resistor in and out of the resistive network in response to the control signal; and a transistor adapted to apply a voltage across the resistive network to generate a current.

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