发明授权
- 专利标题: Digital to analog converter having high multiplying bandwidth
- 专利标题(中): 具有高乘法带宽的数模转换器
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申请号: US847458申请日: 1992-03-06
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公开(公告)号: US5283579A公开(公告)日: 1994-02-01
- 发明人: Ali Tasdighi , Roger A. Levinson , Quoi V. Huynh , John M. Caruso
- 申请人: Ali Tasdighi , Roger A. Levinson , Quoi V. Huynh , John M. Caruso
- 申请人地址: CA Santa Clara
- 专利权人: Micro Power Systems, Inc.
- 当前专利权人: Micro Power Systems, Inc.
- 当前专利权人地址: CA Santa Clara
- 主分类号: H03M1/68
- IPC分类号: H03M1/68 ; H03M1/76 ; H03M1/80 ; H03M1/66
摘要:
A digital to analog converter (DAC) incorporates a novel subranging voltage output DAC that delivers high multiplying bandwidth while consuming low power and requires small silicon area. The higher order digital input bits (MSBS) select a voltage range (VMSB) from a first resistor divider DAC network. The VMSB is then applied to the input of a small high speed low power differential input single ended output LSB programmable attenuator amplifier. Transistor follower devices effectively buffer the MSB section to the LSB section and increase bandwidth and speed of operation as well as permitting multichannel sharing of a single precision MSB voltage divider network.
公开/授权文献
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