发明名称 |
BIAS generator that automatically adjusts its slew rate |
摘要 |
A bias generator that automatically adjusts its slew rate is disclosed to generate an output bias current and adjust the output bias current according to the frequency of a clock signal. The slew rate of the amplifier is thus controlled to save power. It includes: a current mirror for receiving a feedback voltage and generating an output bias current; a storage capacitor with a first end and a second end and the latter being coupled to the ground; a charging switch coupled between the output of the current mirror and the first end of the storage capacitor; a discharging switch coupled between the first end of the storage capacitor and the ground; a comparator whose input is coupled to the first end of the storage capacitor and a reference voltage; and a feedback unit coupled to the output of the comparator for outputting a feedback voltage to the current mirror.
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申请公布号 |
US2006132217(A1) |
申请公布日期 |
2006.06.22 |
申请号 |
US20050080514 |
申请日期 |
2005.03.16 |
申请人 |
LOU CHIH-HONG;LIU YEN-JEN |
发明人 |
LOU CHIH-HONG;LIU YEN-JEN |
分类号 |
G11C5/14 |
主分类号 |
G11C5/14 |
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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