| 摘要 |
A multibit sigma delta modulator for conveting an analog input signal (Vin) into a multibit digital output signal is disclosed. In one embodiment, the multibit sigma modulator includes a first analog filter for filtering the analog input error signal, a quantizer including multiple single bit noise shaped modulators for quantizing the filtered analog input error signal outputted by the first analog filter for generating a multibit digital output signal, and a first feedback arrangement with at least one digital-to-analog converter (DAC) coupled to the quantizer for supplying to the first analog filter at least one quantizer feedback signal based on the multibit digital output signal.
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