Hi,
especially for delta sigma ADCs there is a big difference due to oversampling.
It´s not unusual that you have an oversampling rate of 128.
This means
* sampling rate is 128 x data rate.
Example: data rate: 1kSmpls/s, sampling rate 128kSmpls/s
* sampling rate: how often the analog value is converted to a digital value.
* data rate: how often the user/microcontroller gets an ADC value via the digital interface
Just read on delta sigma adc operation.
Klaus