Hi. In a previous post I asked a few questions, which was answered, and have taken on the suggestion that I use the vout versus the vocm voltage.
I'm having problems with the vout voltage of the LMP91200. Every time I try to measure the output of this device on the PCB i have designed, with a multimeter, the value of the voltage increases all the time. I have used the development board and do not get this issue, so I wonder if there is a design consideration that I'm not aware of that reflects differently with the development board and my own.
I have included a schematic and a PCB layout. The PCB is a 2 layer board, I have removed all the ground layer from underneath the LMP91200.
I look forward to your thoughts.
Tim