SBAS643A January 2018 – August 2018 DRV5056-Q1
PRODUCTION DATA.
The DRV5056-Q1 has a ratiometric analog architecture that scales the sensitivity linearly with the power-supply voltage. For example, the sensitivity is 5% higher when VCC = 5.25 V compared to VCC = 5 V. This behavior enables external ADCs to digitize a more consistent value regardless of the power-supply voltage tolerance, when the ADC uses VCC as its reference.
Equation 3 calculates sensitivity ratiometry error:
where