what is mixed signal

Mixed-Signal – An electronic circuit that has both analog and digital sections. Because many “real-world” systems have analog interfaces (for example, most temperature, pressure, sound, and video sensors are analog), most electronic systems must accommodate analog signals. However, signal processing is now most efficiently performed by digital circuits. Therefore, almost all m odern electronic systems are mixed-signal systems although individual ICs in such systems need not be mixed-signal chips. Instead, a design can achieve mixed-signal operation by combining separate analog and digital ICs.

Mixed-Signal Simulation – A simulation that combines the abilities of an analog simulation and a digital simulation. Used to verify the operation of mixed-mode circuitry.