The INAx191 is in normal operation when the following conditions are met:
- The power-supply voltage (VS) is between 1.7 V and 5.5 V.
- The common-mode voltage (VCM) is within the specified range of –0.2 V to +40 V.
- The maximum differential input signal times the
gain plus VREF is less than the positive output voltage swing
VSP. VREF = 0 V for INA191.
- The ENABLE pin is driven or connected to VS.
- The minimum differential input signal times the
gain plus VREF is greater than the swing to GND, VZL (see
Section 7.3.7). VREF = 0 V for INA191.
During normal operation, this device produces an
output voltage that is the amplified representation of the difference voltage
from IN+ to IN– plus the voltage applied to the REF pin. For devices without a REF
pin the REF voltage is 0 V.