Hi all,
I got an application problem with the XTR115. I attached the schematics.
The HMAM250 is a pressure sensor with an output voltage of 0.5-4.5V.
The problem is that I do always get an output offset curent of 5.2mA. Even after disconnecting R11 (for offset adjustiment of the 4mA) and disconnection of R12 I will get an offset current of 5,2mA with Vout = 0.5V at pin 3 of the HMAM250.
After the output voltage of the HMAM250 increased above 0,8V (equals input voltage for 5,2mA output) the schematics works correctly .
Earth (GND) is the 0V of the voltage supply.
Somebody got an idea?