Analog-to-digital converter with digital-to-analog converter and

Details Analog-to-digital converter with digital-to-analog converter and Analog-to-digital converter with digital-to-analog converter and

1995-12-11

1997-11-11

Gaffin, Jeffrey A.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341158, 341165, H03M 146

Patent

active

056869185

ABSTRACT:
An analog-to-digital converter includes a comparator for comparing a voltage output by a digital-to-analog converter with an input analog voltage at each bit of an n-bit word. The input analog voltage and the analog output voltage of the digital-to-analog converter are alternatingly used as the reference in the comparison, i.e., for every other bit of the n bits. A one-bit result-of-comparison signal indicative of the result of the comparison is output for each of the n bits. Only alternating result-of-comparison signals are inverted and the inverted and non-inverted result-of-comparison signals are stored in a successive approximation register as the converted digital signal and are supplied to the digital-to-analog converter for use in the comparison.

REFERENCES:
"LSI Handbook" edited by IECE, Nov. 30, 1984, first edition, Ohm Corp. pp. 622-623 and 635-636.

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