TLC2264 Datasheet, PDF (48/59 Pages) Texas Instruments – Advanced LinCMOS RAIL-TO-RAIL OPERATIONAL AMPLIFIERS

TLC226x, TLC226xA
Advanced LinCMOS RAIL-TO-RAIL
OPERATIONAL AMPLIFIERS
SLOS177D – FEBRUARY 1997 – REVISED MARCH 2001
APPLICATION INFORMATION
driving large capacitive loads (continued)
ȧȱȲ_{ǒ Ǔ}^{ȳȴȧ ǒ Ǔ + ∆Θ}_m2
tan^–1
UGBW
F × P₂
– tan^–1
UGBW
P₂
(3)
Where :
+ ∆Θ_m2 reduction in phase margin
+ UGBW unity-gain bandwidth frequency
+ F factor from equation 2
+ P₂ unadjusted pole (70 MHz@10 pF, 7 MHz@100 pF, etc.)
Using these equations with Figure 60 and Figure 61 enables the designer to choose the appropriate output
series resistance to optimize the design of circuits driving large capacitive loads.
50 kΩ
50 kΩ
VI
VDD ₊
–
Rnull
+
CL
VDD _{– / GND}
Figure 62. Series-Resistance Circuit
48
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