THS4500 Datasheet, PDF (9/37 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)
SMALL SIGNAL UNITY GAIN
FREQUENCY RESPONSE
1
0.5
0
−0.5
−1
−1.5
−2
Gain = 1
−2.5 _{RL = 800 Ω}
−3 Rf = 392 Ω
−3.5
PIN = −20 dBm
VS = ±5 V
−4
0.1
1
10
100
f − Frequency − MHz
1000
Figure 1
SMALL SIGNAL FREQUENCY RESPONSE
22
20 ^{Gain = 10, Rf = 5.1 kΩ}
18
16
14 ^{Gain = 5, Rf = 2.4 kΩ}
12
10
8 _{Gain = 2, Rf = 1 kΩ}
6
4
2 ^{RL = 800 Ω}
PIN = −30 dBm
0
VS = ±5 V
−2
0.1
1
10
100
1000
f − Frequency − MHz
Figure 2
LARGE SIGNAL FREQUENCY RESPONSE
1
0
−1
−2
Gain = 1
RL = 800 Ω
−3 Rf = 392 Ω
PIN = 10 dBm
VS = ±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
RL = 800 Ω
Rf = 392 Ω
−40 VO = 1 VPP
−50 ^{VS = ±5 V}
−60
−70
−80
HD2
−90
−100
0.1
1
10
f − Frequency − MHz
HD3
100
Figure 5
0.1 dB GAIN FLATNESS
FREQUENCY RESPONSE
0.3
Gain = 1
RL = 800 Ω
0.2 PIN = −20 dBm
VS = ±5 V
0.1
Rf = 499 Ω
0
−0.1
Rf = 392 Ω
−0.2
−0.3
1
10
100
f − Frequency − MHz
Figure 3
1000
HARMONIC DISTORTION
vs
FREQUENCY
0
−10 ^{Differential Input to}
Differential Output
−20 Gain = 1
−30
RL = 800 Ω
Rf = 392 Ω
−40 VO = 1 VPP
−50 ^{VS = ±5 V}
−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}
RL = 800 Ω
−30 _{Rf = 392 Ω}
−40 ^{VO = 2 VPP}
VS = ±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}
RL = 800 Ω
−30 _{Rf = 392 Ω}
−40 ^{VO = 2 VPP}
VS = ±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
RL = 800 Ω
Rf = 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
VO − Output Voltage Swing − V
Figure 9
9