A Bitstrearn Digital-to-analog Converter With 18b Resolution

This two-channel 18b bitstream sigma-delta DIA converter shows total harmonic distortion plus noise better than -102dB at full scale input and dynamic range in excess of 108dB, resulting in a true 18b resolution. The advantages of this type of converter are absence of zero-crossing distortion, excellent differential linearity and the fact that deglitching circuits are not required.