Power supply rejection ratio (PSRR) is a metric that quantifies a system’s ability to reject supply noise and perturbations. As DAQ solutions evolve to be more complete signal chain solutions via system-in-package (SiP) technology, the supply decoupling can be co-packaged with the precision signal chain to improve the overall system PSRR.
Read this paper from Analog Devices to learn about signal chain µModule solutions that integrate signal conditioning, supply generation, and passive internal components. These all-in-one, system-in-a-package designs enable customers to quickly achieve desired, ready-for-market performance in a very small PCB footprint.
Although signal chain µModule solutions are unmatched in ease of use, appropriate testing must be done. While the standard practices of testing PSRR can be applied, additional current drive capability is often necessary due to standard equipment limitations.