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Article External Filtering at MAX34407 Sense Inputs

External Filtering at MAX34407 Sense Inputs.
In applications where there is significant noise present on a monitored supply rail, it is recommended to use a small capacitor at the IN+ and IN- pin for each channel.  Values of 0.1uF are usually sufficient.   The MAX34407 evaluation kit provides a good design example for layout and placement of these capacitors, although they are not populated by default.   Additionally, there are pads for series resistors to form a low pass filter with the capacitors, and these are populated with 0 Ohm resistors.   Following the evaluation kit example by including the filter pads ensures that external filtering can be added easily to optimize final designs. 


 

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