发明名称 |
VCO INSENSITIVE TO POWER SUPPLY RIPPLE |
摘要 |
A ring oscillator that is more insensitive to power supply ripple utilizes an amplifier circuit having a first input coupled to a reference voltage. A current is generated that represents a control voltage supplied to the oscillator control circuit. That current is mirrored and supplied as a control current to the oscillator. An amplifier is used in a feedback loop to ensure that incremental variations in source to drain voltage of a first transistor of the current mirror is present in a second transistor of the current mirror to make the control current more immune to supply ripple.
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申请公布号 |
US2013002361(A1) |
申请公布日期 |
2013.01.03 |
申请号 |
US201113174251 |
申请日期 |
2011.06.30 |
申请人 |
COBAN ABDULKERIM L.;KUMMARAGUNTLA RAVI |
发明人 |
COBAN ABDULKERIM L.;KUMMARAGUNTLA RAVI |
分类号 |
H03K3/03;G05F3/16;H03B5/02 |
主分类号 |
H03K3/03 |
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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