发明名称 |
SCHALTUNGSANORDNUNG ZUR UMSETZUNG EINES SERIELLEN BITSTROMS IN EINE ANALOGE DARSTELLUNG EINER VOM BITSTROM BESTIMMTEN WELLENFORM |
摘要 |
A circuit including a conventional digital-to-analog converter (DAC) and a charge pump for producing an analog representation of an input waveform defined by an input digital bit stream, the analog representation being relatively free of spurious aberrations usually present in the output of a conventional DAC. The charge pump and an associated integrator are used to produce a first approximation of the input waveform and the DAC and an associated detuned slew-rate filter are used to maintain the first approximation in long-term conformance with a more accurate second approximation. Spurious aberrations in the second approximation are integrated over several steps of the input bit stream, thereby minimizing their adverse impact on the relatively true first approximation. |
申请公布号 |
DE3216378(A1) |
申请公布日期 |
1982.11.25 |
申请号 |
DE19823216378 |
申请日期 |
1982.05.03 |
申请人 |
TEKTRONIX,INC. |
发明人 |
KARL BAUR,BRUCE;ROBERT OLLIS,JOHN |
分类号 |
H03M1/08;H03M1/00 |
主分类号 |
H03M1/08 |
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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