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−120
−110
−100
−90
−80
−70
−60
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
Harmonic Distortion − dB
5th_HD
4th_HD
3rd_HD
2nd_HD
V
DD
= 3.3 V,
f = 1 MHz,
R
L
= 800 Ω,
R
f
= 200 Ω,
G = 1
Single Input / Differential Output
V
O
− Output Voltage − V
−90
−80
−70
−60
−50
−40
−30
−20
−10
−25 −20 −15 −10 −5 0 5 10
Third Intermodulation Distortion − dBc
V
O
− Output Voltage − V
f = 10 MHz
f = 5 MHz
V
DD
= 3.3 V,
f = 1 MHz
R
f
= 270 Ω,
R
L
= 800 Ω
0.95
0.96
0.97
0.98
0.99
1
1.01
1.02
1.03
0 100 200 300 400 500
t − Time − ns
− Output Voltage − VV
O
Settling Time,
1% = 40 ns,
0.1% = 60 ns,
0.01% = 292 ns
V
DD
= 3.3 V,
V
O
= 2 V
PP
,
R
F
= 330 Ω,
R
L
= 800 Ω,
G = 1
V
DD
= 3.3 V
−2
−1.5
−1
−0.5
0
0.5
1
1.5
2
Source
Sink
100
− Output Voltage − V
1k 10k
V
O
R
L
− Load Resistance − Ω
THS4120
THS4121
SLOS319D – FEBRUARY 2001 – REVISED OCTOBER 2004
THS4121
HARMONIC DISTORTION THIRD INTERMODULALTION DISTORTION
vs vs
OUTPUT VOLTAGE OUTPUT VOLTAGE
Figure 9. Figure 10.
THS4121
OUTPUT VOLTAGE
vs
LOAD RESISTANCE SETTLING TIME
Figure 11. Figure 12.
7
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