The TLV2731 features a resistive output stage capable of driving moderate capacitive loads. By leveraging an isolation resistor, the device is easily configured to drive large capacitive loads. Increasing the gain enhances the ability of the amplifier to drive greater capacitive loads; see Extending Capacitive Load Drive With the TLV2731 and Figure 6-2. The particular op amp circuit configuration, layout, gain, and output loading are some of the factors to consider when establishing whether an amplifier is stable in operation.

For additional drive capability in unity-gain configurations, improve capacitive load drive by inserting a small resistor, R_ISO, in series with the output; see Extending Capacitive Load Drive With the TLV2731. This resistor significantly reduces ringing and maintains dc performance for purely capacitive loads. However, if a resistive load is in parallel with the capacitive load, then a voltage divider is created; Thus, a gain error is introduced at the output and a slight reduction in the output swing. The error introduced is proportional to the ratio R_ISO / R_L, and is typically negligible at low output levels. A high capacitive load drive makes the TLV2731 an excellent choice for applications such as reference buffers, MOSFET gate drives, and cable-shield drives. The circuit in Extending Capacitive Load Drive With the TLV2731 uses an isolation resistor, R_ISO, to stabilize the output of an op amp. R_ISO modifies the open-loop gain of the system for increased phase margin.