A 12-Bit 1.2-GS/s Current-Steering DAC in 45-NM CMOS Technology.

This research paper presents a 12-bit 8–4-segmented current-steering DAC (digital-to-analog converter) that offers notable advantages, particularly in terms of its reduced power consumption compared to other similar designs. The exceptional performance of our DAC can be attributed to two key factors: the use of a thermometer encoder and an efficient digital input bit segmentation. These features contribute to enhanced precision and reduced power requirements, setting our DAC apart from the existing solutions in the field. These enhancements significantly reduce glitches and improve the accuracy of the DAC's output. DAC dissipates a total power of about 44.95 mW when running at a sample rate of 1.2 GHz with the CMOS technology of 45 nm. While the supply input voltage is held constant at 1.2 V, the DAC's digital input is pulsating in nature in which the ON voltage is 1 V and OFF voltage is 0 V. Also, the DAC has a spurious-free dynamic range (SFDR) of 41.77 dB. [ABSTRACT FROM AUTHOR]