发明名称 |
Digitally controlled tuner circuit |
摘要 |
A digitally controlled tuner circuit for continuous time filters. The digital PLL-based tuner circuit has a digitally controlled oscillator and an open-loop filter. The oscillator has digitally adjusted resistors to allow for digital fine tuning of its time constant and its output frequency. A lock detector detecting the output of the open-loop filter is also part of the tuner circuit.
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申请公布号 |
US6919759(B2) |
申请公布日期 |
2005.07.19 |
申请号 |
US20030740331 |
申请日期 |
2003.12.18 |
申请人 |
WINBOND ELECTRONICS CORPORATION |
发明人 |
CHUAN CHIA-SO |
分类号 |
H03D3/24;H03H17/00;H03K5/00;H03L7/089;H03L7/099;(IPC1-7):H03K5/00 |
主分类号 |
H03D3/24 |
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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