Hello,
In my design I scan an array of inductive sensors. For each sensor I cycle though the following operation.
1. Put device in "active" mode to start conversion
2. Wait for INTB
3. Read result
4 Put device in "sleep" mode
Typically I receive the INTB signal less than 2 ms after I put the device in active mode. However, some times I need to wait a very long time for the INTB signal. Perhaps one measurement every 1-5 minute take 500 ms up to several seconds to complete. Once the measurment finish, the result looks correct.
Is there any known behaviour or setting that can cause the long conversion time?
I have probed all signals, and I don't see anything unusual on the SPI, Clock or sensor analog signals. The waveforms on the analog pins (INA/INB) looks for a long conversion looks identical as a normal measurment.
I have tried to adjust the Rp min/max registers, and have adjusted the time constants according to my design.
I have also tried to reset the signal, i.e. put the device in sleep and back to active, but it does not help either.
I have tried several different boards, and they all experience the same behavior.
The long conversion is currently preventing correct operation of our device, so I would be grateful for any suggestion how to fix this.
Thank you for your support.
