Low-Noise Design for High-Impedance Sensing in Amperometry

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Presentation transcript:

Low-Noise Design for High-Impedance Sensing in Amperometry Three Questions About the Design/Layout of the ADuCM350 Eval Board 5/5/16

5/5/16 What are these 6 plated-through holes for? (I was thinking maybe they were low-impedance connections between layers, for low-noise design, but they don’t seem to be connected to anything …

Maybe they were simply mounting holes for some sort of fixture you had during testing ???

5/5/16 I noticed you have ESD protection on AFE1 – AFE8 …

5/5/16 Littlefuse SP3004 Datasheet Why do we need these diode clamps on AFE1 – AFE8? Do I need them anywhere else? (i.e. on any other pins, say, that I don’t use?)

5/5/16 What are these 0 ohm resistors for? Are they place holders for if you think you later might need to put an RC filter here?