High Side Current Sense Amp

QA150 - QuantAsylum (Test & Measurement Technology, INC)

The QA150 makes ultra-low current measurements of your toughest real-time projects a snap. The QA150 is a high side current to voltage converter. Simply tap into the supply for your various project rails (5V, 3.3V, etc) and the QA150 will convert the currents to voltages that you can then capture on your scope, along with whatever other signals you might need. If you are trying to squeeze every last bit of energy from your batteries, the QA150 is your answer.