I'd like to get your thoughts on the following question:
In https://reference.digilentinc.com/_media/cmod_a7/cmod_a7_rm.pdf, page 9. The Analog input circuit describes using a voltage divider to step a 0 to 3.3 range to 0 to 1 as required by the analog inputs. What I am also noting (and have measured) is that the input has a 3.3K impedance.
I've been trying to get a TMP36GZ temperature monitor to work with this input and now suspect based on this temperature sensor's spec that the 3.3K draws too much current for this high impedance device.
Has anyone else had any experience with limitation on the these analog inputs due to their lower impedance?
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PeterM
All:
I'd like to get your thoughts on the following question:
In https://reference.digilentinc.com/_media/cmod_a7/cmod_a7_rm.pdf, page 9. The Analog input circuit describes using a voltage divider to step a 0 to 3.3 range to 0 to 1 as required by the analog inputs. What I am also noting (and have measured) is that the input has a 3.3K impedance.
I've been trying to get a TMP36GZ temperature monitor to work with this input and now suspect based on this temperature sensor's spec that the 3.3K draws too much current for this high impedance device.
Has anyone else had any experience with limitation on the these analog inputs due to their lower impedance?
Peter
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