ZHCSJN1C September 2000 – September 2022 INA118
PRODUCTION DATA
The linear input voltage range of the input circuitry of the INA118 is from approximately 1.4-V less than the positive supply voltage to 1.2-V greater than the negative supply. As a differential input voltage causes the output voltage to increase, however, the linear input range is limited by the output voltage swing of amplifiers A1 and A2. Thus, the linear common-mode input range is related to the output voltage of the complete amplifier. This behavior also depends on supply voltage; see also Figure 7-6.
Input-overload can produce an output voltage that appears normal. For example, if an input overload condition drives both input amplifiers to their positive output swing limit, the difference voltage measured by the output amplifier is near zero. In this case, the output of the INA118 is near 0 V even though both inputs are overloaded.