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THS4121IDGN Datasheet, PDF (5/30 Pages) Texas Instruments – HIGH-SPEED FULLY DIFFERENTIAL I/O AMPLIFIERS | |||
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THS4120
THS4121
SLOS319D â FEBRUARY 2001 â REVISED OCTOBER 2004
TYPICAL CHARACTERISTICS (continued)
zo
Single-ended (VOCM) input impedance
vs Frequency
FIGURE
17
SMALL-SIGNAL FREQUENCY RESPONSE
2
Rf = 390 â¦
1
Rf = 270 â¦
0
Rf = 200 â¦
Rf = 150 â¦
â1
SLEW RATE
1.5
Falling Edge
1
0.5
VDD = 3.3 V,
VO = 2 VPP,
TA= 25°C
G=1
0
RL = 800 â¦
â2
â0.5
â3 G = 1
VI = 22.5 mVRMS
VDD = 3.3 V
â4
100 k
1M
10 M
100 M
1G
f â Frequency â Hz
Figure 1.
TOTAL HARMONIC DISTORTION
vs
FREQUENCY
â20
VDD = 3.3 V,
VO = 4 VPP
â30
Rf = 200 â¦,
RL = 800 â¦
G=1
â40
SingleâEnded Input /
â50
Differential Output
â1
Rising Edge
â1.5
0
20
40
60
80
t â Time â ns
Figure 2.
TOTAL HARMONIC DISTORTION
vs
OUTPUT VOLTAGE
â50
VDD = 3.3 V,
f = 1 MHz
Rf = 200 â¦,
RL = 800 â¦
â60
Single Input /
Differential Output
Differential Input /
Differential Output
â70
â60
â70
â80
100 k
Differential Input/
Differential Output
1M
f â Frequency â Hz
Figure 3.
10 M
â80
â90
0
1
2
3
4
5
VO â Output Voltage â V
Figure 4.
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