发明名称 |
SOUND DETECTING CIRCUIT AND AMPLIFIER CIRCUIT THEREOF |
摘要 |
Disclosed is a sound detecting circuit which includes a sensing unit configured to generate an AC signal in response to a sound pressure level of a sound signal; an amplification unit configured to amplify the AC signal; and a bias voltage generating unit configured to generate a bias voltage to be provided to the amplification unit. The bias voltage generating unit comprises a current source configured to provide a power current; and a current-voltage converting circuit configured to convert the power current into the bias voltage and to reduce a noise due to the power current.
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申请公布号 |
US2013099868(A1) |
申请公布日期 |
2013.04.25 |
申请号 |
US201213531437 |
申请日期 |
2012.06.22 |
申请人 |
KIM YI-GYEONG;CHO MIN-HYUNG;ROH TAE MOON;KWON JONG-KEE;YANG WOO SEOK;KIM JONGDAE;ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
KIM YI-GYEONG;CHO MIN-HYUNG;ROH TAE MOON;KWON JONG-KEE;YANG WOO SEOK;KIM JONGDAE |
分类号 |
H03F3/04 |
主分类号 |
H03F3/04 |
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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