发明名称 |
Digital amplifier |
摘要 |
<p>To provide a digital amplifier advantageously performing volume adjustment over a wide range. A first and second field effect transistors include N-channel type field effect transistors. The first field effect transistor has the drain connected to the operation voltage Vreg, the source connected to the drain of the second field effect transistor and the gate to which the first input signal is applied from the first level shifter for on/off operation. The second field effect transistor has the source connected to the ground potential as the reference voltage and the gate to which the second input signal is applied from the second level shifter for on/off operation. <IMAGE></p> |
申请公布号 |
EP1517438(A1) |
申请公布日期 |
2005.03.23 |
申请号 |
EP20040255592 |
申请日期 |
2004.09.15 |
申请人 |
SONY CORPORATION |
发明人 |
SAITO, HIROSHI;NAKAO, HIROYASU |
分类号 |
G11B20/10;H03F3/217;H03G3/10;(IPC1-7):H03F3/217 |
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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