发明名称 |
Controllable integrated linear attenuator for a D/A converter |
摘要 |
An integrated D/A converter has a first feedback circuit for generating a first bias voltage to compensate for systemic changes. A second feedback circuit includes a plurality of switchable current sources biased by the first bias voltage and controlled by an externally supplied attenuation control signal to generate a second bias voltage which is applied to control the D/A current sources.
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申请公布号 |
US5942999(A) |
申请公布日期 |
1999.08.24 |
申请号 |
US19970910956 |
申请日期 |
1997.08.08 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CRANFORD, JR., HAYDEN CLAVIE;RIZZO, RAYMOND PAUL |
分类号 |
H03M1/06;H03M1/74;(IPC1-7):H03M1/66 |
主分类号 |
H03M1/06 |
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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