Low-Voltage Measurement Techniques

摘要

Electronic components are continuing to shrink as consumers demand faster, more feature-rich products in ever-smaller form factors. Because of their small sizes, these electronic components usually have limited power-handling capability. As a result, when electrically characterizing these components, the test signals need to be kept small to prevent breakdown or other damage. Testing these devices and materials often includes making low-voltage measurements. This involves sourcing a known current, measuring the resulting voltage, and calculating the resistance. If the device has a low resistance, the resulting voltage will be very small, and great care needs to be taken to reduce offset voltage and noise.