Post Go back to editing

Regarding RDY bit from Status register

Thread Summary

The user is experiencing issues with the RDY bit not clearing when reading temperature from an RTD using the AD7124-4 ADC on the CN0376 evaluation board. The final answer suggests checking existing EZ threads for similar issues and a relevant FAQ on Sigma Delta ADCs, particularly items 10 and 11, which discuss the DOUT/RDY pins. The user's settings include a sample rate of 2, Sinc4FastFilter, gain of 16, LowPower mode, and 50/60 Hz noise rejection enabled.
AI Generated Content
Category: Datasheet/Specs
Product Number: cn 0376

Hi I am using CN0376 evaluation board which is equipped with AD7124-4 24 -Bit precision ADC. I am communicating this board with nucleo-f756zgt6 board. SPI pins are working fine and communication between cn0376 and nucleo board is happening.

I can able to read AD7124-4's ID and able to write value into it's registers. But while reading temp from an RTD I am checking the RDY bit from Status register to ensure the conversion of ADC is done properly. I am continuously waiting for RDY bit clearance. But the bit is not cleared and after some wait time it returns the code value as 0xFFFFFF.

Why it is happening, am I missing any time delays which required for data conversion ? I request AD technical team to assist me on this.

My AD7124-4 settings,

sampleRate = 2, FilterType = Sinc4FastFilter, Gain =16, LowPower mode, Rejection of 50/60 Hz Noise mode enabled.