Delta-sigma modulator that can reduce quantization noise

The present invention is an analog input by correcting the error by using digital output signals to one-bit quantizer and a multi-bit quantizer and comprising an error correction circuit and multiple digital output signals of the bit quantizer and the 1-bit quantization of the delta sigma modulator group It characterized in that for reducing quantization noise arising from the conversion signal into a digital output signal. According to the delta sigma modulator according to the present invention, by correcting the error that a great influence on the characteristics by using the digital output signal of the digital output signal and a 1-bit quantizer of the multi-bit quantizer is possible to reduce the quantization noise. Further, according to the delta sigma modulator according to the present invention, it is possible to remove DC offset that might occur by a multi-bit quantizer.