TLC225X_08 Datasheet, PDF (45/74 Pages) Texas Instruments – Advanced LinCMOS RAIL-TO-RAIL VERY LOW-POWER OPERATIONAL AMPLIFIERS

TLC225x, TLC225xA
Advanced LinCMOS RAIL-TO-RAIL
VERY LOW-POWER OPERATIONAL AMPLIFIERS
SLOS176D – FEBRUARY 1997 – REVISED MARCH 2001
TYPICAL CHARACTERISTICS
PHASE MARGIN
vs
LOAD CAPACITANCE
75°
TA = 25°C
Rnull = 200 Ω
60°
Rnull = 500 Ω
45°
Rnull = 100 Ω
30°
15°
50 kΩ
VI
0°
101
Rnull = 50 Ω
Rnull = 10 Ω
50 kΩ
VDD ₊
Rnull
–
Rnull = 0
+
CL
VDD _–
10 ²
10 ³
10 ⁴
CL – Load Capacitance – pF
Figure 56
UNITY-GAIN BANDWIDTH^†
vs
LOAD CAPACITANCE
200
TA = 25°C
175
150
125
100
75
50
ÁÁÁÁ ₂₅
0
101
10 ²
10 ³
10 ⁴
CL – Load Capacitance – pF
Figure 58
10 ⁵
10 ⁵
GAIN MARGIN
vs
LOAD CAPACITANCE
20
Rnull = 500 Ω
15
Rnull = 200 Ω
10 ^{Rnull = 100 Ω}
Rnull = 50 Ω
Rnull = 10 Ω
5
Rnull = 0
TA = 25°C
0
101
10 ²
10 ³
10 ⁴
10 ⁵
CL – Load Capacitance – pF
Figure 57
OVERESTIMATION OF PHASE MARGIN^†
vs
LOAD CAPACITANCE
25
TA = 25°C
Rnull = 500 Ω
20
15
Rnull = 100 Ω
10
Rnull = 50 Ω
Rnull = 10 Ω
5
Rnull = 200 Ω
0
101
10 ²
10 ³
10 ⁴
10 ⁵
CL – Load Capacitance – pF
Figure 59
† _{See application information}
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