Expansion circuit based on THS3001

When making a broadband DC amplifier, I found that although the slew rate of the THS3001 is high enough, in practice, if the circuit is changed around 10MHz, self-excitation will occur. The chip temperature will rise rapidly and the operation will enter an unstable state. In order to solve the self-excitation, the amplifier will work At higher frequencies, the operation is more stable, and phase compensation and power supply decoupling must be added. Each value in the figure below is the best value that was continuously replaced during actual debugging. The final operating frequency reached 15MHz and still worked stably with very little in-band attenuation.