Hi,
I have to use the ADS124S08 in one Project. One task is to measure +-24mA current over a 100Ohm resisiter. I use +5V to AVDD and link GND to AVSS.
I have few queries related to its analog front-end and negative input measurement as below:
1.On ADS124S08 EVM board Table 14, J13 should be connected to VERF 2.5V to do a single end measure. Can I use a 2.5V biase connected to AINCOM inside ADC instead?
2. For Thermocouple measurement, can I use 2.5V biase connected negtive AIN input? Then I do not need biase resister anymore.
3. In reference design TIDA-00550, +-2.5V voltage is uesd while ADS124S08 EVM chooses +5V to AVDD and GND to AVSS. Which one do you recommond for bipolar input measurement?
Regards
Dingli Xie