发明申请
- 专利标题: INTEGRATED CIRCUIT AND METHOD FOR INTERFACING TWO VOLTAGE DOMAINS USING A TRANSFORMER
- 专利标题(中): 使用变压器接合两个电压域的集成电路和方法
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申请号: US10605855申请日: 2003-10-31
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公开(公告)号: US20050093620A1公开(公告)日: 2005-05-05
- 发明人: Shiu Ho , Ivan Wemple , Stephen Wyatt
- 申请人: Shiu Ho , Ivan Wemple , Stephen Wyatt
- 申请人地址: US NY Armonk
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk
- 主分类号: H01L27/02
- IPC分类号: H01L27/02 ; H03K17/691 ; H03K19/0175 ; H03B1/00
摘要:
An integrated circuit designed to reduce on-chip noise coupling. In one embodiment, circuit (60) includes the following: a circuit transformer (62) capable of converting a noise sensitive input reference clock signal to an output signal having a voltage compatible with a predetermined sink voltage logic level; and a biased receiver network (64) having a PFET current mirror (74) coupled with a NFET current (72), the biased receiver transistor network designed to multiply the transformer signal to offset a mutual coupling loss of the transformer. In at least one alternative embodiment, the input reference clock signal originates at an off-chip clock generator circuit (42) and the output signal from receiver (64) is input to a PLL (44). In another alternative embodiment, the transformer is a monolithic integrated transformer. Another alternative embodiment of the present invention is a method of reducing on-chip noise coupling.
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