THS4500 Datasheet, PDF (11/37 Pages) Texas Instruments – WIDEBAND, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIERS

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THS4500
THS4501
SLOS350D − APRIL 2002 − REVISED JANUARY 2004
TYPICAL CHARACTERISTICS (±5 V Graphs)
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
0
−10
Single-Ended Input to
Differential Output
−20 Gain = 2
−30
RL = 800 Ω
Rf = 1 kΩ
−40 f= 30 MHz
−50 ^{VS = ±5 V}
−60
HD2
−70
−80
HD3
−90
−100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO − Output Voltage Swing − V
Figure 19
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
0
−10
Differentia Input to
Differential Output
−20 Gain = 2
−30
RL = 800 Ω
Rf = 1 kΩ
−40 f= 8 MHz
−50 ^{VS = ±5 V}
−60
HD2
−70
−80
HD3
−90
−100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO − Output Voltage Swing − V
Figure 20
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0
HARMONIC DISTORTION
vs
LOAD RESISTANCE
Single-Ended Input to
Differential Output
Gain = 1
VO = 2 VPP
Rf = 392 Ω
f= 30 MHz
VS = ±5 V
HD2
HD3
400
800
1200
RL − Load Resistance − Ω
1600
Figure 21
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0
HARMONIC DISTORTION
vs
LOAD RESISTANCE
Differential Input to
Differential Output
Gain = 1
VO = 2 VPP
Rf = 392 Ω
f= 30 MHz
VS = ±5 V
HD2
HD3
400
800
1200
RL − Load Resistance − Ω
Figure 22
1600
THIRD-ORDER INTERMODULATION
DISTORTION
vs
FREQUENCY
−50
Single-Ended Input to
Differential Output
−60 ^{Gain = 1}
RL = 800 Ω
Rf = 392 Ω
−70 ^{VO = 2 VPP}
VS = ±5 V
−80
−90
−100
10
100
f − Frequency − MHz
Figure 23
THIRD-ORDER OUTPUT INTERCEPT
POINT
vs
FREQUENCY
55
Gain = 1
50
Rf = 392 Ω
VO = 2 VPP
VS = ± 5 V
45
40
35
30
0
20 40 60 80 100 120
f − Frequency − MHz
Figure 24
SLEW RATE
vs
DIFFERENTIAL OUTPUT VOLTAGE STEP
3000
2500
2000
Gain = 1
RL = 800 Ω
Rf = 392 Ω
VS = ±5 V
1500
1000
500
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO − Differential Output Voltage Step − V
Figure 25
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
0
SETTLING TIME
Rising Edge
Gain = 1
RL = 800 Ω
Rf = 499 Ω
f= 1 MHz
VS = ±5 V
Falling Edge
5
10
15
20
t − Time − ns
Figure 26
SETTLING TIME
1.5
Rising Edge
1
0.5
0
−0.5
−1
Gain = 1
RL = 800 Ω
Rf = 499 Ω
f= 1 MHz
VS = ±5 V
Falling Edge
−1.5
0
20 40 60 80 100 120 140
t − Time − ns
Figure 27
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