Digital-to-analog converter with high linearity

Details Digital-to-analog converter with high linearity Digital-to-analog converter with high linearity

1991-11-18

1993-12-14

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341118, H03M 168, H03M 106

Patent

active

052707164

ABSTRACT:
A high linearity digital-to-analog converter (D/A) provides a linear output voltage using two D/A's. One D/A provides a number of coarse steps and another D/A increments the output voltage within the coarse steps using fine steps. Discontinuities in the output voltage caused by the changing from one coarse step to another are avoided by using reference voltages which ensure that the initial voltage available at the start of a coarse step is lower than the final voltage available at the end of the preceeding step.

REFERENCES:
patent: 3995266 (1976-11-01), Muller et al.
patent: 4016555 (1977-04-01), Tyrrel
patent: 4410879 (1983-10-01), Gumm et al.
patent: 4538266 (1985-08-01), Miki

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