Hi All,
I'm doing project on weigh scale application.
I'm using ina2126 and ads1211 in the analog part and im using one smps.
I'm getting following problems.
1. I'm not geting the stable counts from ads1211.
2. If i move any mobile(with ringing) to neer the pcb, I'm getting more counts from adc.
How to I remove the above problems?
I'm done the following mistakes,
1. I didn't use any filtering circuits at the output of ina2126. Reason is, I'm confusing with cut off frequency. How and which freaquncy I use to design the filter? I have just used RC filtr with cut off frequency 100Hz. Is it ok?
2. I didn't used seperate ground planes for analog and digital circuits. How can divide analog and digital grounds from single ground line?
Thanks,