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A monolithic 8-bit D/A converter with a new scheme for error compensation

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2 Author(s)

Discusses a modification of a monolithic bipolar 8-bit D/A converter (DAC) circuit based on the R-2R ladder method. It does not require transistor emitter size scaling. Voltages proportional to absolute temperature are introduced between the bases of the current generator transistors to compensate for the differences in their emitter-base voltages and thus maintain precision in the current division of the R-2R ladder. The compensation obtained by this method is adequate for 9- and 10-bit monolithic DAC's operating in a temperature range from -40/spl deg/C to 125/spl deg/C.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:10 ,  Issue: 6 )

Date of Publication:

Dec. 1975

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