发明名称 |
Delta-sigma modulator with single-ended input and feedback signal |
摘要 |
Signal processing systems described herein include an analog-to-digital delta sigma modulator to process a single-ended input signal using a single-ended analog feedback reference signal. The delta sigma modulator includes a switched capacitor circuit that integrates a difference between the single-ended input signal and the single-ended analog feedback signal derived from a quantization output of the delta sigma modulator. Embodiments of the switched capacitor circuit allow the delta sigma modulator to be implemented with fewer switches, less complicated reference signal generators, and smaller capacitors relative to conventional counterparts. Thus, embodiments of the delta sigma modulator described herein can cost less to build and use less power. Embodiments of the signal processing systems can be implemented in single and multi-bit delta sigma modulators and various sampling topologies, including single and double sampling topologies.
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申请公布号 |
GB2421377(A) |
申请公布日期 |
2006.06.21 |
申请号 |
GB20050025487 |
申请日期 |
2005.12.14 |
申请人 |
XIAOFAN FEI;JOHANN GABORIAU;JOHN L. MELANSON;CIRRUS LOGIC INC. |
发明人 |
XIAOFAN FEI;JOHANN GABORIAU;JOHN L. MELANSON |
分类号 |
H03M3/02;H03M3/00;H03M3/04 |
主分类号 |
H03M3/02 |
代理机构 |
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