MU LAW CODER AND DECODER

935.031 A digital-to-analog converter operates in accordance with the?255 compression law and includes an amplifier, a reference voltage source and a feedback resistor ladder attenuator from the amplifier output to its input. The attenuator is multiplicatively weighted and referenced to the referenc...

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Bibliographic Details
Main Author BROKAW, ADRIAN P
Format Patent
LanguageEnglish
French
Published 08.02.1983
Subjects
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
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Summary:935.031 A digital-to-analog converter operates in accordance with the?255 compression law and includes an amplifier, a reference voltage source and a feedback resistor ladder attenuator from the amplifier output to its input. The attenuator is multiplicatively weighted and referenced to the reference voltage. A current source or sink including a linearly weighted resistor ladder is also connected to the amplifier input. An analog-to-digital converter includes a similar resistor ladder attenuator and resistor ladder current source or sink at the input of a comparator. The attenuator is referenced to a reference potential. The digital signal is determined by logic circuitry responsive to the comparator output in a successive approximation operation.
Bibliography:Application Number: CA19780316401