+

-

VIN

RISO

VOUT

CL

11

TLV522

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SNOSD27 – MAY 2016

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Device Functional Modes (continued)

In order to drive heavy (>50pF) capacitive loads, an isolation resistor, RISO, should be used, as shown in

Figure 23. By using this isolation resistor, the capacitive load is isolated from the amplifier’s output. The larger

the value of RISO, the more stable the amplifier will be. If the value of RISO is sufficiently large, the feedback loop

will be stable, independent of the value of CL. However, larger values of RISO result in reduced output swing and

reduced output current drive.

Figure 23. Resistive Isolation of Capacitive Load