Tool/software:
I am developing a portable gas detector using LMP91000 and alpha sense O2A3 oxygen sensor. Its a battery operated device and it required sleep mode implemented. The O2 sensor interfaced with LMP91000 and i could able to read oxygen readings too.
I am facing an issue while turn the LMP91000 in standby mode. I am measuring the Oxygen concentration once in every second.
When the LMP91000 turn to standby mode after the read, the VOUT is increasing with maximum out. There is no issue if i continue the LMP91000 in wakeup mode.
What is the reason for this issue? Could you please share the AFE configuration to put the LMP91000 to standby mode when O2A3 sensor interfaced.
There is no problem if i use the LMP91000 in 3 lead electrochemical mode. I could able to put standby and wakeup without any issue during the measurement time.