发明名称 |
Impedance-matched output driver circuits having coarse and fine tuning control |
摘要 |
Impedance-matched output driver circuits include a first totem pole driver stage and a second totem pole driver stage. The first totem pole driver stage includes at least one PMOS pull-up transistor and at least one NMOS pull-down transistor therein responsive to a first pull-up signal and a first pull-down signal, respectively. The second totem pole driver stage has at least one NMOS pull-up transistor and at least one PMOS pull-down transistor therein responsive to a second pull-up signal and second pull-down signal, respectively. The linearity of the output driver circuit is enhanced by including a first resistive element that extends between the first and second totem pole driver stages. The first resistive element has a first terminal, which is electrically coupled to drain terminals of the at least one PMOS pull-up transistor and the at least one NMOS pull-down transistor in the first totem pole driver stage, and a second terminal, which is electrically coupled to source terminals of the at least one NMOS pull-up transistor and the at least one PMOS pull-down transistor in the second totem pole driver stage.
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申请公布号 |
US7123055(B1) |
申请公布日期 |
2006.10.17 |
申请号 |
US20050105237 |
申请日期 |
2005.04.13 |
申请人 |
INTEGRATED DEVICE TECHNOLOGY, INC. |
发明人 |
CHONG YEW-KEONG;KLEIN DAVID J.;BUTKA BRIAN K. |
分类号 |
H03K19/0175;H03K19/00;H03K19/094 |
主分类号 |
H03K19/0175 |
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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