Precision integrated resistors

摘要

Pin electronics for an IC tester are built as an integrated circuit for characterizing the electrical operation of a device under test (DUT) by applying a test voltage to each of the pins on the DUT and measuring each resulting current. Typically, an IC tester selects one of several measure resistors, applies a stimulus to a pin of the DUT using an input driver, and measures the current response of the DUT through the related measure resistor. Each measure resistor corresponds to a specific current range and measurement accuracy is proportional to the precision of the selected resistor. Each measure resistor is a series of precision integrated resistors having a very low leakage current. This provides for current measurements of high sensitivity.