Hello Cynthia, thanks for the reply, My name is Andres (I still don´t know how to change it) I am aware of the connection of address pin, in fact, I conected the addr pin to gnd in one device and to vdd in the other, and I expected it would work just fine, but only the ADC in address 48h worked, I made the circuit of this schematic, V50 is 5 V power supply and V33 is 3.3 V power supply the part with the MOSFET is a bidirectional bus interface for devices that work at 5V and 3.3V (this was made to somehow protect my FPGA), and the picture is the third version of the complete circuit. I have tested that circuit with an arduino and worked fine, and after that I tested the same circuit with an nvidia jetson that a friend of mine is working on, it was programed with C (he used a library found on internet) and he could read every channel on both ADCs. After the picture, I send some screenshots of the SCL, SDA and Output (Reading) of the comunication between my FPGA and ADS1015 . 1. configuration of ADC 48h 2. selecting conversion register of ADC 48h and its first conversion. 3. the next conversion, where reading value changed, the value 40 is equivalent to 40 mV at the input
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