发明名称 |
Digital analog converter and electronic device using the same |
摘要 |
The present invention relates to a D/A converter circuit which is capable of independently controlling the output voltage amplitude VOUT and the reference voltage. The D/A converter circuit converts "n" bit digital data ("n": natural number) to analog signals, wherein the respective bits of said "n" bit digital data control a switch, control charge and discharge of electric charges in the capacitance connected to said switch, and output analog signals with the offset potential used as a reference potential.
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申请公布号 |
US6420988(B1) |
申请公布日期 |
2002.07.16 |
申请号 |
US19990449535 |
申请日期 |
1999.11.29 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
AZAMI MUNEHIRO;OSAME MITSUAKI;SHIONOIRI YUTAKA;NAGAO SHOU |
分类号 |
G09G3/32;H03M1/68;H03M1/80;(IPC1-7):H03M1/66 |
主分类号 |
G09G3/32 |
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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