THS4503-EP Datasheet, PDF (15/40 Pages) Texas Instruments – WIDEBAND, LOW-DISTORTION FULLY DIFFERENTIAL AMPLIFIERS

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THS4503−EP
SGLS291A − APRIL 2005 − JANUARY 2012
TYPICAL CHARACTERISTICS (5 V Graphs)
SMALL SIGNAL UNITY GAIN
FREQUENCY RESPONSE
1
0
−1
−2
Gain = 1
R_L = 800 Ω
−3 Rf = 392 Ω
P_IN = −20 dBm
V_S = 5 V
−4
0.1
1
10
100
f − Frequency − MHz
Figure 51
1000
SMALL SIGNAL FREQUENCY RESPONSE
22
20
Gain = 10, R_f = 1.3 kΩ
18
16
Gain = 5, R_f = 1.3 kΩ
14
12
10
8 _{Gain = 2, Rf = 1 kΩ}
6
4
2
R_L = 800 Ω
0
P_IN = −30 dBm
V_S = 5 V
−2
0.1
1
10
100
1000
f − Frequency − MHz
Figure 52
0.1 dB GAIN FLATNESS
FREQUENCY RESPONSE
0.2
0.1
R_f = 499 Ω
0
−0.1
−0.2
R_f = 392 Ω
−0.3
−0.4
−0.5
1
Gain = 1
R_L = 800 Ω
P_IN = −20 dBm
V_S = 5 V
10
100
f − Frequency − MHz
Figure 53
1000
HARMONIC DISTORTION
vs
FREQUENCY
0
−10 ^{Single-Ended Input to}
Differential Output
−20 Gain = 1
−30
R_L = 800 Ω
R_f = 499 Ω
−40 VO = 1 VPP
−50 ^{VS = 5 V}
−60
−70
−80
−90
−100
0.1
HD3
HD2
1
10
100
f − Frequency − MHz
Figure 54
HARMONIC DISTORTION
vs
FREQUENCY
0
−10
Single-Ended Input to
Differential Output
−20 Gain = 1
−30
R_L = 800 Ω
R_f = 499 Ω
−40 VO = 2 VPP
−50 ^{VS = 5 V}
−60
−70
−80
−90
−100
0.1
HD3
HD2
1
10
100
f − Frequency − MHz
Figure 55
HARMONIC DISTORTION
vs
FREQUENCY
0
−10
Differential Input to
Differential Output
−20 Gain = 1
−30
R_L = 800 Ω
R_f = 499 Ω
−40 VO = 1 VPP
−50 ^{VS = 5 V}
HD2
−60
−70
−80
HD3
−90
−100
0.1
1
10
100
f − Frequency − MHz
Figure 56
HARMONIC DISTORTION
vs
FREQUENCY
0
Differential Input to
−10 _{Differential Output}
−20 ^{Gain = 1}
R_L = 800 Ω
−30 _{Rf = 499 Ω}
−40 ^{VO = 2 VPP}
V_S = 5 V
−50
−60
−70
HD3
−80
−90
HD2
−100
0.1
1
10
100
f − Frequency − MHz
Figure 57
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
0
−10
Single-Ended Input to
Differential Output
−20 Gain = 1
−30
R_L = 800 Ω
R_f = 499 Ω
−40 f= 8 MHz
−50 ^{VS = ±5 V}
−60
HD3
−70
−80
HD2
−90
−100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
V_O − Output Voltage Swing − V
Figure 58
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
0
−10
Single-Ended Input to
Differential Output
−20 Gain = 1
−30
R_L = 800 Ω
R_f = 499 Ω
−40 f= 30 MHz
−50 ^{VS = 5 V}
HD3
−60
HD2
−70
−80
−90
−100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
V_O − Output Voltage Swing − V
Figure 59
15