Current-Steering DAC for Urinary Bladder Volume Measurement

Abstract

A current-steering DAC is proposed to measure urinary bladder volume. The proposed DAC is composed of a 4-bit pull current DAC, a 4-bit push-pull current DAC, and a 2-bit push-pull current DAC. Since the output voltage range of three DACs is limited for the urinary bladder volume measurement, the resolution and power consumption of the DAC are reduced. The proposed DAC is evaluated by HSPICE simulation using 0.6 µm CMOS technology parameters. The DAC dissipates 241 µW with 5 V supply voltage.