Hi all, does anyone know if the SPX-15508 based on MCP9600 can be driven by 5V? I would like to use it with a Microview, which only provides 5V. The amp PCB is printed with 3.3V, however, the MPC9600 data sheet https://cdn.sparkfun.com/assets/9/0/b/0 … asheet.pdf says it can be driven by 2.7 to 5.5V. Is there any reason I can’t drive the thermocouple amp board with 5V? Is the amp board using LEDs, capacitors, or resistors that can’t handle 5V?
Greetings. Thanks for the post.
I see what you mean in the datasheet regarding the obsolete maximum ratings, however, several other parts of the datasheet are referring to 3.3v operations. I think we went with 3.3v to be on the safe side and to get the closest results possible according to the datasheet. I would suggest you stick with 3.3v, however, if you choose to use 5v I would argue this is out of scope for what we expect our customers to use. It may work, though, I cannot guarantee this.
If you must use this product with 5v I would suggest regulating it down to 3.3 to be on the safe side.
I hope this helps.
Thanks for the quick reply. I see what you’re saying on the data sheet, e.g., the stated temp accuracy ratings are based in 3.3V Vdd. Okay, I can add a voltage divider with a couple of resistors to bring the 5V down to 3.3. I hadn’t considered that. Thanks! Hopefully I don’t fry the board 