Other Parts Discussed in Thread: TIDA-01333 , TIDA-00764 , TIDA-00170 , ADS8688A , TIDA-010008 , ADS8694 , ADS8684 , ADS8688 , ADS125H02 , MUX36D04 , MUX509 , UCC12040 , SN6505B , UCC12050 Hi
We are designing Analog input module for following requirements.
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It depends on if you need or want to isolate your data acquisition system with your backend processor system.
If no, please refer to ADS8681EVM which is a ADC in same family but doesn't have any digital isolator…
1. front-end amplifier would be better choice
2. pull-down may case other problem
3. simulaneous-sampling is always needed, ADS8900B is my first choice, use ADS8691 just because it's simple, only one power need, if add front-end amplifier, additional…
Thanks for your query on E2E. Absolutely you can use ADS8681 for 4-20mA signal acquisition. We have some released TI Designs that introduce the solution for voltage (Max. ±12.288 V) and current (0~24mA) signal based on ADS8681:
Other Parts Discussed in Thread: INA148 , INA149 How do Instrumentation Amplifiers (IAs) fit into my design?
TI Precision Labs - IA
Introduction to instrumentation amplifiers Training Video
When to use an instrumentation amplifier Training Video