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Hello,
I am evaluating the NT3H2111 as a replacement for an ST25DV. However, it is not clear from the datasheet how the energy harvesting behaves. This is important since our application does require the ability to temporarily enable the energy harvesting.
Can the energy harvesting function be disabled?
Is the VOUT pin High-Z when there is no field and/or the energy harvesting function is disabled? What is the current leakage when external voltage is applied to the VOUT pin?
Thanks for your help!
Alexis
Hello earth75,
NT3H2111 does not have the posibility to "disable" the energy harvesting. In different words, if there is an RF voltage on the LA/LB pins, you will always see the rectified voltage on VOUT (of cource, it depends on an used load).
About the current leakage, it should be in the range of 10-15 uA.
BR
Tomas
Hello @earth75
If you do not want to use the energy harvesting function, keep the VOUT pin floating should be OK.
Hi @KaiLi
Thanks I have read the Application note already.
It describes in good details what the behavior of VOUT is during harvesting and the relationship between field strength and output power.
However I'm interested in the behavior in the absence of a field : what happens to Vout when a voltage is externally applied to the pin, for example by a battery? Does it sink current?
Also, is it possible to disable energy harvesting so that VOUT stars high-Z at all times?
Regards,
Alexis
Hello @earth75
I would suggest you take a look at the following documentation, which should help you understand energy harvesting feature.