Design of Low Power Current Steering DAC Using 45nm CMOS Technology

Digital to analog converters (DACs) enable the smooth integration of digital technology with analog systems by precisely converting digital signals into analog outputs. This conversion guarantees accurate reproduction of music, video, and other analog signals. A current-steering operates by varying the currents through different branches of a resistor network to produce the desired analog output voltage. The current steering DAC offers energy-efficient applications since it offers a notable reduction in power usage while maintaining accuracy. This work uses a current steering mechanism and Sigma-Delta modulation for 10-bit resolution. The DAC has been designed in 0.45 $\mu\mathrm{m}$ CMOS technology. The precision and stability provided by the integrated Band Gap Reference circuit reduce errors and improve overall dependability. The design includes a segmented structure with 5 bits for binary and 5 bits for unary architecture. In simulation, it is found that the power consumption of the DAC is 2.9147mW. The DAC is designed using 1164 transistors. The DAC is observed to obtain accurate results with a supply voltage of 1.SV. The DAC can be used in modern electronic devices for things like audio processing, communication systems, and signal synthesis.