Area reduction in 8 bit binary DAC using current multiplication

Abstract

A proposed current multiplication technique is applied on 8 bit binary current steering Digital-to -Analog Converters with LSB 150 μA, to reduce area. MSB 1 and MSB 2 current are first kept half to reduce area and then current multiplication is performed to get the desired output.

Compare to the conventional binary current steering Digital-to-Analog Converters, 20.66% area is reduced and static errors are found within limit. Maximum Integral nonlinearity is-18μA (< LSB) and Differential nonlinearity5.02 μA (< LSB).