SNOS674G November 1997 – April 2020 LMC6482
Unlike Bi-FET amplifier designs, the LMC6482 does not exhibit phase inversion when an input voltage exceeds the negative supply voltage. Figure 53 shows an input voltage exceeding both supplies with no resulting phase inversion on the output.
The absolute maximum input voltage is 300 mV beyond either supply rail at room temperature. Voltages greatly exceeding this absolute maximum rating, as in Figure 54, can cause excessive current to flow in or out of the input pins possibly affecting reliability.
NOTE:A ±7.5-V input signal greatly exceeds the 3-V supply in Figure 55 causing no phase inversion due to RI.
Applications that exceed this rating must externally limit the maximum input current to ±5 mA with an input resistor (RI) as shown in Figure 55.
NOTE:RI input current protection for voltages exceeding the supply voltages.