Datasheet

 
     
   
SLOS209G − JANUARY 1998 − REVISED FEBRUARY 2004
34
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PARAMETER MEASUREMENT INFORMATION
_
+
R
null
R
L
C
L
Figure 57
driving a capacitive load
When the amplifier is configured in this manner, capacitive loading directly on the output will decrease the
device’s phase margin leading to high frequency ringing or oscillations. Therefore, for capacitive loads of greater
than 10 pF, it is recommended that a resistor be placed in series (R
NULL
) with the output of the amplifier, as
shown in Figure 58. A minimum value of 20 Ω should work well for most applications.
C
LOAD
R
F
Input
Output
R
G
R
NULL
_
+
Figure 58. Driving a Capacitive Load