发明名称 |
Tuning circuit device with built-in band pass integrated on semiconductor substrate together with PLL circuit |
摘要 |
<p>The circuit device uses a variable band pass filter between a mixer and an amplifier to match an intermediate frequency signal to a telecasting facility standard. A controller supplies control signals (CTL1,2) produced on the basics of an external instruction (DA) to the variable band pass filter so the semiconductor device is shareable between products exported to different countries.</p> |
申请公布号 |
EP1047200(A2) |
申请公布日期 |
2000.10.25 |
申请号 |
EP20000108651 |
申请日期 |
2000.04.20 |
申请人 |
NEC COMPOUND SEMICONDUCTOR DEVICES, LTD. |
发明人 |
SAITO, HITOSHI |
分类号 |
H03H11/04;H03L7/183;H04B1/18;H04B1/26;H04B1/28;H04N5/44;H04N5/50;(IPC1-7):H04B1/28 |
主分类号 |
H03H11/04 |
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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