The present invention aims to provide a linear type digital-to-analog converter which has a great freedom of design and then is not affected by a parasitic capacity. The linear type digital-to-analog converter comprises a lower digital-to-analog converting portion having a plurality of lower...http://www.google.de/patents/US5767801?utm_source=gb-gplus-sharePatent US5767801 - Linear type digital-to-analog converter and driving method therefor
