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1 10 100
− Voltage Noise −
f − Frequency − Hz
1 k 10 k
V
n
nV/ Hz
0
20
40
60
80
100
120
140
100 k
−0.4
−0.3
−0.2
−0.1
0
0.1
− Output Offset Voltage − V
− Common-Mode Input Voltage − VV
IC
V
OO
0 0.5 1 1.5 2 2.5 3
100 k 1 M
CMRR − Common-Mode Rejection Ratio − dB
f − Frequency − Hz
10 M 100 M
V
DD
= 3.3 V,
R
f
= 1 kΩ,
R
L
= 800 Ω,
G = 1
−110
−100
−90
−80
−70
−60
−50
1
10
100
1000
100 k 1 M 10 M 100 M
− Single-Ended Output Impedance −
f − Frequency − Hz
z
os
Ω
V
DD
= 3.3 V,
V
I
= 5 dBm
G = 1
THS4120
THS4121
SLOS319D – FEBRUARY 2001 – REVISED OCTOBER 2004
VOLTAGE NOISE OUTPUT OFFSETE VOLTAGE
vs vs
FREQUENCY COMMON-MODE INPUT VOLTAGE
Figure 13. Figure 14.
THS4121 THS4121
COMMON-MODE REJECTION RATIO SINGLE-ENDED OUTPUT IMPEDANCE
vs vs
FREQUENCY FREQUENCY
Figure 15. Figure 16.
8
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