I am using ADS1247 to measure voltage as listed in attached file.

Minimum voltage to measure = 59067uV

Maximum voltage to measure = 979671uV

AVDD = DVDD = 3.3V

IDAC = 50uA

PGA = 2

Internal refer = 2.048V

1. Will I achieve to measure voltage as I need?

2. How to calculate accuracy which can be achieved by ADS1247 with above parameters?



Crosspost:
http://e2e.ti.com/support/data_converters/precision_data_converters/f/73/t/347733.aspx

 

Measureing a total range of 60mV to 100mV, using a ADC with Vref of 2.048v, just sounds nuts to me!

Why aren't you amplifying the signal before sampling with the ADC?

 

Hi,

range is 60mV to 1V. (please check again)
I have a PGA of 2 that why's ref is 2.048.

 

any help on dat??????