Serial-parallel A/D converter

Details Serial-parallel A/D converter Serial-parallel A/D converter

1997-09-26

1999-02-23

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341155, H03M 112

Patent

active

058749128

ABSTRACT:
A sub-A/D converter of a first stage is constituted by a serial-parallel A/D converter, which does not use a subtractor, comprising two sub-A/D converters and a first D/A converter. A subtracting amplifier includes a subtractor selecting an analog input signal or the output of the first D/A converter and subtracting the output of a second D/A converter from the selected signal, and an amplifier amplifying the output of the subtractor. The subtracting amplifier is provided for each of a plurality of comparators, which are capable of receiving inputs in timeshared fashion, constituting a sub-A/D converter of a second stage.

REFERENCES:
patent: 5151700 (1992-09-01), Matsuzawa et al.
patent: 5187483 (1993-02-01), Yonemaru

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