Hello,
We are using XTR105UA in one of our design. I have attached the image of the circuit in our design. Can you please verify if the design is functionally correct or not?
We are using two XTR105UA ICs and their output is applied to TMUX6219DGKR MUX, I have also attached the image of MUX in our circuit below. Please verify both the circuits and provide suggestions if any.
Regards,
Nitesh
Hi Nitesh,
Can you please verify if the design is functionally correct or not?
I plug your calculated
parameters into the XTR105 pseudo model, it seems to be good.
Enclosed is the simulation per your design.
XTR105 -50 to 260 Pt100 01312024.TSC
I see that the circuit implemented the common mode LPFs and I would place the differential mode LPF in there as well. You may or may not need it. If not, you do not have to populate these filters.
Enclosed is the INA826EVM that talks about the input filtering in front of instrumentation amplifier.
output is applied to TMUX6219DGKR MUX
Regarding to TMUX6219DGKR MUX, I will transfer the inquiry to the Mux support team. INT MUX should be able to check it out for you.
If you have other questions, please let us know.
Best,
Raymond
Hello Alex,
I have one query regarding TMUX6219DGKR MUX, In the datasheet for VSS pin, in the pin description on page number 3, it is mentioned that VSS pin should be connected to the ground. But in the next line it is mentioned to connect decoupling capacitors of value 0.1uF to 10uF between VSS and GND.
It makes some confusion if to connect VSS pin directly to GND or decoupling capacitors should be connected. So can please clarify this?
And currently we have connected 0.1uF and 1uF capacitor between VSS and GND. So confirm if it is ok? or we need to connect VSS pin directly to GND.
