发明名称 |
VDD-independent oscillator insensitive to process variation |
摘要 |
An oscillator includes a positive power supply node for providing a positive power supply voltage; a capacitor; and a constant current source providing a first constant current and coupled to the positive power supply node. The first constant current is independent from the positive power supply node. The oscillator also includes a charging current source configured to provide a second constant current to charge the capacitor, wherein the second constant current mirrors the first constant current. The oscillator further includes a constant current source inverter having a third constant current mirroring the first constant current. The constant current source inverter is configured to control the oscillator to transition state at a constant state transition voltage.
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申请公布号 |
US8531248(B2) |
申请公布日期 |
2013.09.10 |
申请号 |
US20090617009 |
申请日期 |
2009.11.12 |
申请人 |
CHEN YI-TZU;TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. |
发明人 |
CHEN YI-TZU |
分类号 |
H03K3/26;H03K3/02 |
主分类号 |
H03K3/26 |
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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