Mixed-Signal Interface Circuits
Mixed-signal interface circuits form the essential bridge between analog and digital domains, enabling seamless communication between circuits operating at different voltage levels, with different ground references, or across isolation barriers. As electronic systems increasingly combine analog sensors, digital processors, and power electronics on the same board or within the same system, the ability to safely and accurately transfer signals between these domains becomes critical for system performance and reliability.
These interface circuits address fundamental challenges: how to translate signals between 1.8V digital logic and 5V analog sensors, how to maintain signal integrity when crossing isolation barriers for safety or noise immunity, and how to prevent ground loops from corrupting precision measurements. From simple level shifters to sophisticated isolated data converters, mixed-signal interfaces enable the integration of diverse electronic subsystems into cohesive, functional designs.