Category: Datasheet/Specs
Product Number: LT5400
I hope this finds you well. Our team is using the LT5400 quad resistor network in one of our designs and we are hoping you can clarify some technical details for us.
We are intending to use the LT5400 quad resistor in a circuit that is to maintain a very tight accuracy specification. Our Electrical Engineering team has identified the resistor as being the main contributor to the accuracy drift of our signal chains. As such, understanding the specifications of the matching drift is very important to us.
The first question we have is regarding the resistor matching over time plot in page 5 of the datasheet. Are you able to provide more details or explanation of the test conditions on how this drift was obtained? In addition, can you clarify what the different traces on the plot represent? Knowing the temperature this plot was obtained at would be especially helpful as we are considering replicating this plot using accelerated life testing. Any details on the test setup used to get this plot would also be appreciated.
The second question is regarding the "Resistor Matching Ratio Long Term Drift" specification on page 4 of the datasheet. Our team is interpreting the meaning for that particular field as: resistors exposed to the specified test conditions have a typical ppm value as specified." Can you clarify if this is the correct interpretation of the field?
Thank you very much for your help.
