SLDS204B October 2014 – June 2020 PGA300
PRODUCTION DATA.
The PGA300 implements digital gain and offset compensation for both pressure and temperature signal chains. Equation 2 and Equation 3 show the relationship between the outputs of the P ADC and T ADC, respectively and the gain and offset compensated pressure and temperature values:
where
For sensors with larger offset voltages or sensor bridges with low or high common-mode voltages, amplifying and offsetting the P ADC value in the digital domain can be useful. The digital gain and offset compensation allows the PGA300 to cancel the offset and amplify the signal further before being used by the temperature and nonlinearity compensation algorithm.