Datasheet

TLC226x, TLC226xA, TLC226xY
Advanced LinCMOS
 RAIL-TO-RAIL
OPERATIONAL AMPLIFIERS
SLOS177 – FEBRUARY 1997
54
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
driving large capacitive loads (continued)
∆Θ
m2
tan
–1
UGBW
F×P
2
– tan
–1
UGBW
P
2
where :
(3)
∆Θ
m2
reduction in phase margin
UGBW unity-gain bandwidth frequency
F factor from equation 2
P
2
unadjusted pole (70 MHz@10 pF, 7 MHz@100 pF, etc.)
Using these equations with Figure 54 and Figure 55 enables the designer to choose the appropriate output
series resistance to optimize the design of circuits driving large capacitive loads.
50 kΩ
50 kΩ
V
DD–/GND
V
DD+
R
null
C
L
V
I
+
–
Figure 62. Series-Resistance Circuit