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−1.5
−1
−0.5
0
0.5
1
1.5
0 20 40 60 80
t − Time − ns
V
DD
= 3.3 V,
V
O
= 2 V
PP
,
T
A
= 25°C
G = 1
R
L
= 800 Ω
− Output Voltage − VV
O
Rising Edge
Falling Edge
−4
−2
−1
0
1
2
100 k 1M 10 M 100 M 1G
G = 1
V
I
= 22.5 mV
RMS
V
DD
= 3.3 V
R
f
= 270 Ω
R
f
= 200 Ω
Gain − dB
f − Frequency − Hz
R
f
= 390 Ω
R
f
= 150 Ω
−3
V
O
− Output Voltage − V
−90
−80
−70
−60
−50
0 1 2 3 4 5
V
DD
= 3.3 V,
f = 1 MHz
R
f
= 200 Ω,
R
L
= 800 Ω
Differential Input /
Differential Output
Single Input /
Differential Output
THD − Total Harmonic Distortion − dB
−80
−70
−60
−50
−40
−30
−20
100 k 1 M 10 M
THD − Total Harmonic Distortion − dB
f − Frequency − Hz
Differential Input/
Differential Output
Single−Ended Input /
Differential Output
V
DD
= 3.3 V,
V
O
= 4 V
PP
R
f
= 200 Ω,
R
L
= 800 Ω
G = 1
THS4120
THS4121
SLOS319D – FEBRUARY 2001 – REVISED OCTOBER 2004
TYPICAL CHARACTERISTICS (continued)
FIGURE
z
o
Single-ended (V
OCM
) input impedance vs Frequency 17
SMALL-SIGNAL FREQUENCY RESPONSE SLEW RATE
Figure 1. Figure 2.
TOTAL HARMONIC DISTORTION TOTAL HARMONIC DISTORTION
vs vs
FREQUENCY OUTPUT VOLTAGE
Figure 3. Figure 4.
5
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