TLC2264A-Q1 Datasheet, PDF (31/37 Pages) Texas Instruments – Advanced LinCMOS™ RAIL-TO-RAIL OPERATIONAL ANPLIFIERS

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TLC226xĆQ1, TLC226xAĆQ1
Advanced LinCMOS RAILĆTOĆRAIL
OPERATIONAL AMPLIFIERS
SGLS189B − OCTOBER 2003 − REVISED APRIL 2008
APPLICATION INFORMATION
driving large capacitive loads (continued)
ǒ Ǔ _ȧȱȲ ^ȳȴȧ ∆Θ_m2 + tan^–1
UGBW
ǒ_{F × P2}Ǔ
– 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
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