This application note shows how the crosstalk characteristic of a system of two linear voltage regulators can be measured using the OMICRON Lab Bode 100 and the Picotest J2111A Current Injector. The same technique can be used to measure switching regulators as well.
The measurements are performed on the Picotest Voltage Regulator Test Standard (VRTS) testing board1 which comes with the regulators needed to perform the measurements shown in this document. The first regulator is a LM317 variable linear voltage regulator, the second regulator is a fixed voltage regulator (TLV2217).
The VRTS can be used to help performing a high variety of voltage regulator measurements using the Bode 100 in conjunction with the Picotest line of Signal Injectors.