https://www.lcsc.com/product-detail/Analog-To-Digital-Converters-ADCs_Texas-Instruments-ADS1115IDGSR_C37593.html https://www.lcsc.com/product-detail/Analog-To-D

https://www.lcsc.com/product-detail/Analog-To-Digital-Converters-ADCs_Texas-Instruments-ADS1115IDGSR_C37593.html https://www.lcsc.com/product-detail/Analog-To-Digital-Conver... Commercial 16-bit/4ch ADCs can be obtained for <$0.90 in modest quantities. The RP2040 ADC is not good, and I am not often sampling something close to my noisy MCU. I'd rather route I2C anywhere than worry about signal integrity routing my analog signal a mile across the board.