THS4503-EP Datasheet, PDF (11/40 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)
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
0
Differential Input to
−10 _{Differential Output}
−20 ^{Gain = 2}
R_L = 800 Ω
−30 _{Rf = 1.3 kΩ}
−40 ^{f= 8 MHz}
V_S = ±5 V
−50
HD3
−60
HD2
−70
−80
−90
−100
0
1 2 3 4 5 6 7 8 9 10
V_O − Output Voltage Swing − V
Figure 20
HARMONIC DISTORTION
vs
LOAD RESISTANCE
0
Single-Ended Input to
−10 _{Differential Output}
Gain = 1
−20 _{VO = 2 VPP}
−30 R_f = 499 Ω
−40
f= 30 MHz
V_S = ±5 V
−50
−60
−70
−80
−90
−100
0
HD2
HD3
400
800
1200
R_L − 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
V_O = 2 V_PP
R_f = 499 Ω
f= 30 MHz
V_S = ±5 V
HD2
HD3
400
800
1200
R_L − Load Resistance − Ω
1600
Figure 22
THIRD-ORDER INTERMODULATION
DISTORTION
vs
FREQUENCY
−50
Single-Ended Input to
Differential Output
−60 ^{Gain = 1}
V_O = 2 V_PP
R_f = 392 Ω
−70 ^{VS = ±5 V}
Tone Spacing = 200 kHz
−80
−90
−100
10
100
f − Frequency − MHz
Figure 23
THIRD-ORDER OUTPUT INTERCEPT
POINT
vs
FREQUENCY
60
55
Normalized to 200 Ω
Normalized to 50 Ω
50
45
40
35
OIP₃ R_L= 800 Ω
30
Gain = 1
25 _{Rf = 392 Ω}
20
V_S = ± 5 V
Tone Spacing = 200 kHz
15
0 10 20 30 40 50 60 70 80 90 100
f − Frequency − MHz
Figure 24
SLEW RATE
vs
DIFFERENTIAL OUTPUT VOLTAGE STEP
3000
Gain = 1
2500
R_L = 800 Ω
R_f = 499 Ω
f= 8 MHz
2000 VS = ±5 V
1500
1000
500
0
0 0.5 1 1.5 2 2.5 3 3.5 4
V_O − Differential Output Voltage Step − V
Figure 25
1.5
1
0.5
0
−0.5
−1
−1.5
0
SETTLING TIME
Rising Edge
Gain = 1
R_L = 800 Ω
R_f = 499 Ω
f= 1 MHz
V_S = ±5 V
Falling Edge
5
10
15
20
t − Time − ns
Figure 26
2.5
2
1.5
1
0.5
0
−0.5
−1
−1.5
−2
−2.5
0
SETTLING TIME
Rising Edge
Gain = 1
R_L = 800 Ω
R_f = 499 Ω
f= 1 MHz
V_S = ±5 V
Falling Edge
5
10
15
20
t − Time − ns
LARGE-SIGNAL TRANSIENT RESPONSE
3
2
1
Gain = 1
R_L = 800 Ω
R_f = 499 Ω
0
t_r/t_f = 300 ps
V_S = ±5 V
−1
−2
−3
−100 0
100 200 300
t − Time − ns
400 500
Figure 27
Figure 28
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