发明授权
- 专利标题: Programmable current output and common-mode voltage buffer
- 专利标题(中): 可编程电流输出和共模电压缓冲器
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申请号: US11593274申请日: 2006-11-06
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公开(公告)号: US07535258B1公开(公告)日: 2009-05-19
- 发明人: Phillip L. Johnson , William B. Andrews , Gregory S. Cartney
- 申请人: Phillip L. Johnson , William B. Andrews , Gregory S. Cartney
- 申请人地址: US OR Hillsboro
- 专利权人: Lattice Semiconductor Corporation
- 当前专利权人: Lattice Semiconductor Corporation
- 当前专利权人地址: US OR Hillsboro
- 代理机构: Mendelsohn & Associates, P.C.
- 主分类号: H03K19/0175
- IPC分类号: H03K19/0175
摘要:
A buffer for a programmable logic device has programmable current sink and source circuitry and an independently programmable common-mode voltage reference source. An amplifier, responsive to a common-mode voltage detector and the voltage reference source, forces a common-mode voltage of an output signal from the buffer to approximate the voltage from the common-mode voltage reference source.
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