发明名称 |
Differential amplifier, two-stage amplifier including the differential amplifier, and analog-to-digital converter including the differential amplifier |
摘要 |
A differential amplifier has an in-phase input terminal to which an input signal is applied through a first switching unit, an anti-phase input terminal to which a reference signal is applied through a second switching unit, and a third switching unit between the in-phase and anti-phase input terminals. The potential difference between the in-phase and anti-phase input terminals is differentially amplified by setting the first and second switching units to be on and the third switching unit to be off. Also, the in-phase and anti-phase input terminals are short-circuited to have a high impedance by setting the first and second switching units to be off and the third switching unit to be on.
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申请公布号 |
US6985030(B2) |
申请公布日期 |
2006.01.10 |
申请号 |
US20040818791 |
申请日期 |
2004.04.06 |
申请人 |
SONY CORPORATION |
发明人 |
SHIMIZU YASUHIDE;KATSUTA HIDEYUKI;YAMASHITA YUKITOSHI;YOKOYAMA NOBUHIKO |
分类号 |
H03F1/02;H03M1/34;H03F1/26;H03F3/45;H03F3/68;H03M1/12;H03M1/14 |
主分类号 |
H03F1/02 |
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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