Analogue to digital converters
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United States of America Patent
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-
Dec 6, 1988
Grant Date -
N/A
app pub date -
Nov 24, 1986
filing date -
Feb 23, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A linear A to D converter comprising a combiner means to which an input signal to be converted is fed, the input signal being combined subtractively or additively with an analogue feedback signal, and the combiner means being arranged to feed an A to D flash converter via an amplifier, which A to D flash converter is arranged to feed a D to A converter which provides the feedback signal. The D to A converter comprises a digital overflowing accumulator also arranged to drive a finite impulse response filter having a plurality of serially coupled one bit delay elements, output signals from which are summed to provide the digital output signal.
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