THS4501 Datasheet, PDF (10/48 Pages) National Semiconductor (TI) – WIDEBAND, LOW-DISTORTION, FULLY DIFFERENTIAL AMPLIFIERS

THS4500
THS4501
SLOS350F – APRIL 2002 – REVISED OCTOBER 2011
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TYPICAL CHARACTERISTICS: ±5 V
SMALL-SIGNAL UNITY-GAIN
FREQUENCY RESPONSE
SMALL-SIGNAL FREQUENCY
RESPONSE
1
0.5
0
−0.5
−1
−1.5
−2
−2.5
−3
−3.5
−4
Gain = 1
R_L = 800 Ω
R_f = 392 Ω
P_IN = −20 dBm
V_S = ±5 V
0.1
1
10
100
f − Frequency − MHz
1000
22
20
Gain = 10, R_f = 5.1 kΩ
18
16
Gain = 5, R_f = 2.4 kΩ
14
12
10
8 _{Gain = 2, Rf = 1 kΩ}
6
4
2
R_L = 800 Ω
P_IN = −30 dBm
0
V_S = ±5 V
−2
0.1
1
10
100
f − Frequency − MHz
1000
Figure 1.
Figure 2.
0.1-dB GAIN FLATNESS
FREQUENCY RESPONSE
0.3
Gain = 1
R_L = 800 Ω
0.2 P_IN = −20 dBm
V_S = ±5 V
0.1
R_f = 499 Ω
0
−0.1
R_f = 392 Ω
−0.2
−0.3
1
10
100
f − Frequency − MHz
Figure 3.
1000
LARGE-SIGNAL FREQUENCY
RESPONSE
1
0
−1
−2
Gain = 1
R_L = 800 Ω
−3 Rf = 392 Ω
P_IN = 10 dBm
V_S = ±5 V
−4
0.1
1
10
100
f − Frequency − MHz
Figure 4.
1000
HARMONIC DISTORTION
vs
FREQUENCY
0
−10
Single-Ended Input to
Differential Output
−20 Gain = 1
−30
R_L = 800 Ω
R_f = 392 Ω
−40 VO = 1 VPP
V_S = ±5 V
−50
−60
−70
−80
HD2
−90
−100
0.1
1
10
f − Frequency − MHz
HD3
100
Figure 5.
HARMONIC DISTORTION
vs
FREQUENCY
0
−10
Differential Input to
Differential Output
−20 Gain = 1
−30
R_L = 800 Ω
R_f = 392 Ω
−40 VO = 1 VPP
V_S = ±5 V
−50
−60
−70
HD2
−80
−90
−100
0.1
1
10
f − Frequency − MHz
HD3
100
Figure 6.
HARMONIC DISTORTION
vs
FREQUENCY
0
Single-Ended Input to
−10 _{Differential Output}
−20 ^{Gain = 1}
R_L = 800 Ω
−30 _{Rf = 392 Ω}
−40 ^VO ^{= 2 V}PP
V_S = ±5 V
−50
−60
−70
HD2
−80
−90
−100
0.1
HD3
1
10
100
f − Frequency − MHz
Figure 7.
HARMONIC DISTORTION
vs
FREQUENCY
0
Differential Input to
−10 _{Differential Output}
−20 ^{Gain = 1}
R_L = 800 Ω
−30 _{Rf = 392 Ω}
−40 ^VO ^{= 2 V}PP
V_S = ±5 V
−50
−60
−70
−80
HD2
−90
−100
0.1
HD3
1
10
100
f − Frequency − MHz
Figure 8.
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
0
−10
Single-Ended Input to
Differential Output
−20 Gain = 1
−30
R_L = 800 Ω
R_f = 392 Ω
−40 f= 8 MHz
−50 ^{VS = ±5 V}
−60
−70
HD2
−80
−90
HD3
−100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
V_O − Output Voltage Swing − V
Figure 9.
10
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