We picked up two off L37S100S05 (Digi-Key PN 132-L37S100S05M-ND) for a quick prototyping on a solar power instrumentation project, and we’re not getting test bench results that are anywhere close to the datasheet (as best we can interpret it). Datasheet is here to save time.
Vcc is 4.99V from a test bench PSU, and according to the datasheet Vref the “Reference voltage (output)” should be 2.475 / 2.495 / 2.515V (min/typ/max) at 0A current. We are measuring 3.01V on one, and 3.02V on the other.
Under the same conditions at 0A the datasheet says the output voltage should be “Vof + 0 625V ± 0 015V” [sic]. When no external Vref is applied it looks like Vof should be the same as Vref i.e. 3.01V from above, meaning we might expect an output 3.01+0.625 = 3.635V. We are measuring 0.53V
The numbers do not correspond to the datasheet at all.
We haven’t worked with these types of sensors very much, but have diligently tried to use the datasheet. Any help or advice on how to actually use these before we give up and return them or throw them in the defects bin would be really appreciated!