Hi Chen, How are you? Thank you for your answer. My question is whether the signal must be applied to four input pins in order to have 18-bit resolution. In other words, is it impossible to have 18-bit resolution if only one signal is applied to a pin? So, I want to know how to setup hardware circuits to be operated by 18-bit resolution ADC. And, I have one more question. For 18-bit operation, can I use only the following pins? -. IN1A_P, IN1A_M -. IN2A_P, IN2A_M -. IN3A_P, IN3A_M -. IN4A_P, IN4A_M At this time, how do I handle the unused pins below? ; Connect to ground or dc-power. -. IN1B_P, IN1B_M -. IN2B_P, IN2B_M -. IN3B_P, IN3B_M -. IN4B_P, IN4B_M And, how do I handle the unused channel pins in case of using only 1 channel? Thank you. Best Regards, Jaden
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