| 摘要 |
A delta sigma modulator is provided to reduce size and current consumption while maintaining resolution by reducing the size of an integration capacitor. A delta sigma modulator includes an amplifying unit, and unit integrators. The amplifying unit adjusts amplification degree according to the ratio of sampling capacitors and integration capacitors. The unit integrators have switches which constitute the paths of the capacitors and the amplifying unit. The size of the sampling capacitor which constitutes the unit integrator of the last end, is smaller than the sampling capacitor of the adjacent unit integrator.
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