发明名称 |
Signal processing circuit and semiconductor integrated circuit converting AC signal using two voltage reference values |
摘要 |
A comparator converts an input analog RF signal to a digital signal and inputs the digital signal in a charge pump circuit. The charge pump circuit controls charging/discharging of an integration capacitor in response to the output level of the digital signal output from the comparator. The charging quantity of the integration capacitor is used as a reference voltage of an RF amplifier, and a center voltage level of the analog RF signal output from the RF amplifier is adjusted in response to an average dc level of the digital signal. Thus, it follows that a slice level of a signal reproducing circuit is properly controlled.
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申请公布号 |
US6437723(B1) |
申请公布日期 |
2002.08.20 |
申请号 |
US20000665678 |
申请日期 |
2000.09.20 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
OTSUKA TAKESHI;TANI KUNIYUKI;WADA ATSUSHI |
分类号 |
G11B20/10;G11B7/005;H03M1/10;(IPC1-7):H03M1/00 |
主分类号 |
G11B20/10 |
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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