High accuracy digital to analog converter combining data weighte

Details High accuracy digital to analog converter combining data weighte High accuracy digital to analog converter combining data weighte

1998-03-23

2000-03-14

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341154, H03M 166, H03M 178

Patent

active

060378883

ABSTRACT:
A method of digital to analog conversion comprising switching binary weighted groups of first current sources of a first array of sources to an output in accordance with least significant bits of a digital input signal, driving the binary weighted groups with a driving current source selected from a second group of current sources in accordance with a counter value which is based on a value of most significant bits of the input signal added to a immediately preceding counter value, and driving an output with current sources which are addressable consecutively to the driving current source.

REFERENCES:
patent: 4804960 (1989-02-01), Fernandes et al.
patent: 4958155 (1990-09-01), Gulczynski
patent: 5818377 (1998-10-01), Wieser
Baird et al, "Linearity Enhancement . . . Using Data Weighted Averaging," IEEE, Dec. 1995.

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