Hi, Glenn
The obvious solution would be to use a Current generator and send 5 mA into your sensor ... to get a 0 - 2.5v voltage to be measured.
looks an OPA is to use for the current source ... to get a decent result.
Alain
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Re: Reading 500ohm resistive sensors
Hi, Glenn
The obvious solution would be to use a Current generator and send 5 mA into your sensor ... to get a 0 - 2.5v voltage to be measured.
looks an OPA is to use for the current source ... to get a decent result.
Alain
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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Re: Reading 500ohm resistive sensors
Op amps will solve a lot of interfacing problems.
You can get linearity in one of two ways:
1. Use a constant current source. That could be made easily with a PNP transistor, two diodes and two resistors - (a section of an op amp can be used as well)
2. Use math or a lookup table in your software.
Charles Linquist
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