The spec table states the capacitive load drive of the ADA4807-2 is 15pF. Can the ADA4807-2 drive larger capacitor loads? Will this heavy capacitive load make the amplifier unstable?

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The spec table states the capacitive load drive of the ADA4807-2 is 15pF. Can
the ADA4807-2 drive larger capacitor loads? Will this heavy capacitive load
make the amplifier unstable?

 

Yes, the ADA4807-2 can drive larger capacitor loads. A capacitive load adds an
extra pole to the amplifier transfer function that can affect stability in many
cases. A common method of maintaining stability in this situation is to add a
series resistor between the amplifier output and the capacitive load. For very
large capacitances only a small resistor is needed. If using a 10uF capacitor,
for example, the capacitance is so large that the combined PCB trace resistance
and ESR of the capacitor provide enough series resistance to keep the amplifier
stable. This configuration is discussed in the Applications section of the
datasheet.

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