发明名称 |
Segmented chopping amplifier |
摘要 |
A chopping amplifier and method for chopping an input signal are disclosed. The chopping amplifier and method utilize at least two chopping amplifier stages. A chopping operation of an input signal is segmented across two or more chopping amplifier stages, and the two or more chopping amplifier stages are responsive to a master controller. Chop clock signals of the chopping amplifier stages are staggered so that they have non-overlapping periods and at least one of the chopping amplifier stages is not operating in an open loop at any given time. The non-overlapping periods are periodic so that a master chop clock of the master controller can be operated at a lower chop clock frequency. For every doubling of N number of chopping amplifier stages, magnitudes of chopping artifacts and aliased components are each respectively reduced by 3 dB.
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申请公布号 |
US7091771(B2) |
申请公布日期 |
2006.08.15 |
申请号 |
US20030687416 |
申请日期 |
2003.10.16 |
申请人 |
CIRRUS LOGIC, INC. |
发明人 |
THOMPSON KARL;MELANSON JOHN L.;CHOW CHUNG-KAI;PRASAD AMMISETTI V. |
分类号 |
H03F1/02;H03F1/26;H03F3/21;H03F3/217;H03F3/38 |
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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