Full custom CMOS design and measurement of a video D/A converter

Abstract

This paper describes the design and testing of a video 8-bit D/A converter, based on 63 binary non-weighted current cells, arranged in a 8/spl times/8 matrix for the 6 MSBs and 2 binary weighted current cells for the 2 LSBs. Each current cell is provided with a balanced output. Cascode transistors are used to increase the accuracy and speed of the switching current cells. The design has been simulated with HSPICE and processed in ES2 1.5 /spl mu/m CMOS technology. Measurement results are included.