Computer simulation of circuit performance using SPICE is often useful when analyzing the performance of analog circuits and systems. Spice is particularly helpful for video and RF amplifier circuits where parasitic capacitance and inductance can have a major effect on circuit performance. A SPICE model for the OPA690 is available through the OPA690 product folder under Simulation Models. These models do a good job of predicting small-signal ac and transient performance under a wide variety of operating conditions. The models do not do as well in predicting the harmonic distortion or dG/dP characteristics. These models do not attempt to distinguish between the package types small-signal ac performance.