Addressing static and dynamic errors in bandpass unit element multibit DAC´s

This paper describes a general model for static as well as dynamic errors in multibit unit element DAC´s. Apart from the static mismatch there are two error terms arising from switching imperfections. Based on the model, some bandpass mismatch shaping techniques are presented. These address both the static mismatch as well as the switching imperfections. The technique can significantly improve the in band noise.