LMC6482_15 Datasheet, PDF (19/39 Pages) Texas Instruments – CMOS Dual Rail-to-Rail Input and Output Operational Amplifier

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Feature Description (continued)
LMC6482
SNOS674E – NOVEMBER 1997 – REVISED APRIL 2015
A ±7.5-V input signal greatly exceeds the 3-V supply in Figure 55 causing no phase inversion due to R_I.
Figure 54. Input Signal
Applications that exceed this rating must externally limit the maximum input current to ±5 mA with an input
resistor (R_I) as shown in Figure 55.
R_I input current protection for voltages exceeding the supply voltages.
Figure 55. R_I Input Current Protection for
Voltages Exceeding the Supply Voltages
7.3.3 Rail-to-Rail Output
The approximated output resistance of the LMC6482 is 180-Ω sourcing and 13-0Ω sinking at V_S = 3 V and 110-Ω
sourcing and 80-Ω sinking at Vs = 5 V. Using the calculated output resistance, maximum output voltage swing
can be estimated as a function of load.
7.4 Device Functional Modes
The LMC6482 may be used in applications where each amplifier channel is used independently, or in
applications in which the channels are cascaded. See Typical Applications for more information.
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