发明名称 |
OMVORMER VAN DIGITAAL NAAR ANALOOG EN OMGEKEERD. |
摘要 |
<p>A digital-to-analog converter operates in accordance with the mu 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.</p> |
申请公布号 |
NL7811460(A) |
申请公布日期 |
1979.05.23 |
申请号 |
NL19780011460 |
申请日期 |
1978.11.21 |
申请人 |
ANALOG DEVICES, INC. TE NORWOOD, MASSACHUSETTS, VER.ST.V.AM. |
发明人 |
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分类号 |
H03M1/66;H03M1/00;(IPC1-7):03K13/02;03K13/01 |
主分类号 |
H03M1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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