Multi channel 4-20mA, RTD, Thermocouple ADC Advice

Question

Hi 
 I am new to electronics world and here to ask help to suggest me an ADC for my application. 
 I want to make a Breakout Board to be interfaced with ESP32 to make a data logger. I would prefer 8 inputs though 4 would be considered and each input may of either 4-20mA or PT-100 (RTD) or Thermocouple. 
 Someone suggested me ADS1115 and INA105 but I see other ADC with better resolution in the market. Please give me your suggestion based on your practical experience. Thanks

JellenieR · Accepted Answer

Hi, 
 You may also want to consider AD4110-1 Datasheet and Product Info | Analog Devices with external mux in front for example ADGS1208 Datasheet and Product Info | Analog Devices . 
 You can also ask someone from (+) Q&A - Switches/Multiplexers - EngineerZone (analog.com) what mux option will suit your requirements. 
 Another option is AD7124-8 Datasheet and Product Info | Analog Devices it has most of the building blocks needed for RTD and Thermocouple measurement though it does not have a direct current input, but you can add external sense resistor. 
 Thanks, 
 Jellenie)

Akila · Answer

Hi, 
 You may check out AD74412R Datasheet and Product Info | Analog Devices

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Multi channel 4-20mA, RTD, Thermocouple ADC Advice