1s/div

0.1 V/div

m

INA128, INA129

SBOS051C – OCTOBER 1995 – REVISED OCTOBER 2015

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Device Functional Modes (continued)

G

≥ 100

Figure 23. 0.1-Hz to 10-Hz Input-Referred Voltage Noise

7.4.2 Input Common-Mode Range

The linear input voltage range of the input circuitry of the INA12x is from approximately 1.4 V below the positive

supply voltage to 1.7 V above the negative supply. As a differential input voltage causes the output voltage

linear common-mode input range is related to the output voltage of the complete amplifier. This behavior also

depends on supply voltage (see performance curve Figure 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

12

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