Dear Openexo team,
I did not see the JLCPCB part regarding the INA125U amplifier in the BOM file. Cuz there are many 16 pin INA125U, I wonder if the selection of chips will affect the performance of the circuit. May I ask if you can provide the selection of INA125U that you are using? Thanks!
Thanks for reaching out. The INA125 series is regularly out of stock on JLCPCB. What we’ve ended up doing a lot of times is ordering them from a separate website and populating them ourselves in the lab. There are sub-models of the chip with minor spec differences. If I remember correctly, we’ve used both the INA125U and the INA125UA. Right now, the INA125U is in stock on JLCPCB.
https://jlcpcb.com/partdetail/TexasInstruments-INA125UA/C21974
@shanpu-fang Thanks for your answer! According to what you said, have you tested that both INA125UA and INA125U can meet the requirements for normal circuit operation？
@Ruoran
If I remember correctly, we’ve used both variations on OpenExo PCBs and haven’t noticed any significant differences. This post on the TI forum outlines the differences between them:
Let us know if you have more questions.
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