发明公开
EP1801976A1 SAMPLE HOLD CIRCUIT, AND PIPELINE AD CONVERTER USING THE CIRCUIT
审中-公开
采样保持电路和开关使用SANTANDER管线AD转换
- 专利标题： SAMPLE HOLD CIRCUIT, AND PIPELINE AD CONVERTER USING THE CIRCUIT
- 专利标题（中）： 采样保持电路和开关使用SANTANDER管线AD转换
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申请号： EP05793159.4申请日： 2005-10-12
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公开(公告)号： EP1801976A1公开(公告)日： 2007-06-27
- 发明人: ONO, Koichi , SEGAMI, Masahiro
- 申请人： SONY CORPORATION
- 申请人地址： 1-7-1 Konan Minato-ku Tokyo JP
- 专利权人： SONY CORPORATION
- 当前专利权人： SONY CORPORATION
- 当前专利权人地址： 1-7-1 Konan Minato-ku Tokyo JP
- 代理机构： Robinson, Nigel Alexander Julian
- 优先权： JP2004297963 20041012; JP2004305789 20041020; JP2004308034 20041022
- 国际公布： WO2006041085 20060420
- 主分类号： H03M1/14
- IPC分类号： H03M1/14 ; H03M1/12 ; H03F3/70 ; H03M1/10 ; H03M1/44
摘要：
A switched capacitor sample-and-hold circuit using a source grounded input operational amplifier, wherein a feed forward circuit or a feedback circuit is provided in the operational amplifier and connected to the feedback capacitor of the operational amplifier via switches, an input common voltage or a middle point voltage of outputs is detected, and a difference of the same from a reference voltage is previously charged in the feedback capacitor, thereby suppressing fluctuation of an output operation point at the time of amplification of the operational amplifier.
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