The HI-8425 Evaluation Board allows the user to evaluate the HI-8425 avionics discrete-to-digital sensing IC. The HI-8425 includes eight sensor input channels and four low-side output drivers. The eight input channels are configurable for either Ground/Open or Supply/Open sensing depending on the state of the SNSE_SEL pin. The board features jumpers, DIP switches, test points, LED’s and two potentiometers to facilitate IC testing and evaluation.
Discrete-to-Digital input sensors are used in avionics systems to monitor signals between +28VDC, ground and floating states. The four 200mA low-side driver outputs may be used to drive LED’s, relays and other loads.