发明名称 |
Current source apparatus, light-emitting-device apparatus and digital-analog converting apparatus |
摘要 |
A current source apparatus includes a first MOS transistor having a drain serving as current input terminals with the gate connected to the drain, a first switch connected to the source of the first MOS transistor, a second MOS transistor having a drain serving as a current output terminal, a second switch connected to the source of the second MOS transistor, a third switch having one end connected to the gate of the first MOS transistor, and the other end connected to the gate of the second MOS transistor, and a drive circuit which controls the second switch and the third switch.
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申请公布号 |
US2005127988(A1) |
申请公布日期 |
2005.06.16 |
申请号 |
US20040003399 |
申请日期 |
2004.12.06 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO.,LTD. |
发明人 |
OZASA MASAYUKI;OHKUBO MANABU |
分类号 |
G05F1/10;H03F3/345;H03F3/45;H03K17/0412;H03K17/78;H03M1/68;(IPC1-7):H03F3/45 |
主分类号 |
G05F1/10 |
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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