发明名称 |
Variable gain amplifier |
摘要 |
A variable gain amplifier device comprises a variable gain amplifier circuit which amplifies a difference between an input signal and a feedback signal to output an output signal, a feedback circuit which supplies the feedback signal to the variable gain amplifier circuit, and a controller which controls the variable gain amplifier circuit and the feedback circuit to decrease a cutoff frequency of the feedback circuit according to increase of a gain of the variable gain amplifier circuit or vice versa.
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申请公布号 |
US2003058048(A1) |
申请公布日期 |
2003.03.27 |
申请号 |
US20020210057 |
申请日期 |
2002.08.02 |
申请人 |
UENO TAKASHI;ARAI TADASHI;ITAKURA TETSURO |
发明人 |
UENO TAKASHI;ARAI TADASHI;ITAKURA TETSURO |
分类号 |
H03G3/00;H03G9/16;(IPC1-7):H03F3/45 |
主分类号 |
H03G3/00 |
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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