Analog routing issue | Cypress Semiconductor
Analog routing issue
I am trying to make a transducer for 3 RTD temperature sensors with my CY8CKIT 049-42xx.
For that, I would like to use internal IDAC current source selectively (by multiplexer) fed to RTDs and perform an ADC conversion over it and series connected precission resistor - to get a ratiometric resistance measurement (see attached image).
However, Creator keeps complaining about such setup - epecially about connecting a mux (for rtd selection) and individual pins(presision resistor) to SAR mux. While from analog routing chart - it seems pretty possible.
Could anybody assist me in this problem?