Application Note

AN-763

Rev. C | Page 5 of 8

SNUBBER NETWORK

Another way to stabilize an op amp driving a capacitive load

is through the use of a snubber as shown in Figure 10.

This method has the significant advantage of not reducing the

output swing because there is no isolation resistor in the signal

path. Also, the use of the snubber does not degrade the gain

accuracy or cause extra distortion when driving a nonlinear

load. The exact RS and CS combination can be determined

experimentally.

VIN

VOUT

CL

CS

RS

RL

Figure 10. Snubber Network

TIME (1µs/DIV)

RL = 10kΩ

CL = 500pF

Figure 11. Capacitor Load Drive Without Snubber

TIME (1µs/DIV)

RL = 10kΩ

CL = 500pF

RS = 100Ω

CS = 1nF

Figure 12. Capacitor Load Drive with Snubber