A to-bit 100-MHz Current-Steering DAC with Randomized Thermometer Code Calibration Scheme

This paper presents a 10-bit 100 MHz digital-to-analog converter (DAC) by using a current-steering architecture. The proposed DAC suits for high speed and high resolution applications. Since the current-steering DAC suffers from the process mismatch which limits both the static and dynamic performances, this work employs a pseudo-random controller to improve the linearity. The random generator controls the selection of the element in the MSB part, and therefore, the harmonics caused by mismatch problem can be mitigated.