Digital-to-analog converter having programmable transfer functio

Details Digital-to-analog converter having programmable transfer functio Digital-to-analog converter having programmable transfer functio

1995-12-07

1997-12-30

Gaffin, Jeffrey A.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341145, 341118, 341120, 341153, H03M 166

Patent

active

057035865

ABSTRACT:
A Digital-to-Analog (D/A) converter with programmable transfer function includes a Main Converter and at least one Sub-Converter. Errors in the Main Converter are compensated for by programming the one or more Sub-Converters with compensation values determined during a Calibration Sequence. The Calibration Sequence measures the deviations of the transfer function of the Main Converter from the ideal at predetermined bit transitions of the digital input signal and generates representative separate digital signals for the one or more Sub-Converters. By combining these separate signals with the digital input signal, the net errors of the D/A Converter transfer function are reduced.

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