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REF35: REF35 output impedance versus frequency

william crone
Prodigy 30 points
Part Number: REF35

What is the best value of output capacitance to keep the output impedance of the REF35 low through 10 Khz ? By low I mean 100 ohms or less through 10 khz ?

  • 0
    TI__Expert 6220 points

    Hello,

    The REF35 datasheet includes Figure 7-26 which shows the output impedance for output capacitor loads 0.1 µF, 1 µF, and 10 µF:

    The stable output capacitance range is 0.1 µF to 10 µF. I would expect values in that range to be around what is represented in Figure 7-26. I would recommend selecting an output capacitance in that range.

    What is your application circuit that is causing the need for such a low output impedance? Is a buffer something you could consider to meet this output impedance spec?

    Thanks,

    Jackson