–4–

© 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.

AN-732

TIME (10 s/DIV)

Figure 11. Capacitive Load Drive with the Snubber

Snubber Network

Another way to stabilize an op amp driving a capacitive

load is with the use of a snubber, as shown in Figure 9.

This method presents the significant advantage of not

reducing the output swing because there is not any

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.

experimentally.

7

4

3

6

2

V+

V–

C7

C1

C9

*R2

C2

C5

R3

DUT

R5

*R4

R6

C6

*R1

*C8

R7

R9

R8

V1

V2

0

G1

R10

VEE

C11

*R12

G4

C10

G3

VCC

G5

VO

*THESE COMPONENTS ARE BY DEFAULT

SHORTED WITH A SMALL COPPER

STRAP BETWEEN THE MOUNTING PADS.

TO USE THE COMPONENT MOUNTING

LOCATION, SIMPLY REMOVE THE STRAP

WITH A CUTTING UTENSIL (DREMEL

CUTTING TIP, EXACTO BLADE, ETC.)

ALL PASSIVE COMPONENT MOUNTING

LOCATIONS CAN ACCOMMODATE 0805 TO 2512

SIZED SURFACE MOUNT PACKAGES, 1/2" SPACED

LEADED RESISTORS AND 0.3" SPACED

LEADED CAPACITORS

0

G2

*R11

Figure 12. EVAL-PRAOPAMP-1R Electrical Schematic

Figure 13. EVAL-PRAOPAMP-1R Board Layout Patterns

REV. A