| 摘要 |
PURPOSE: A digital feed forward sigma-delta modulator in an analog-digital converter and a modulating method thereof are provided to reduce the area of the analog circuit and power consumption by processing the feed forward signal as the digital domain. CONSTITUTION: A plurality of integrators(110-1-110-n) outputs the analog signal which is corresponded by integrating the analog signal. A plurality of multiplier outputs the analog signal by respectively applying the analog signals outputted from the integrators. A plurality of quantizers(130-0-130-n) respectively outputs the digital signal which is corresponded to by implementing the quantization for analog signal outputted from the multipliers.
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