THS4504 Datasheet, PDF (15/45 Pages) National Semiconductor (TI) – WIDEBAND, LOW-DISTORTION, FULLY DIFFERENTIAL AMPLIFIERS

THS4504
THS4505
www.ti.com ......................................................................................................................................................... SLOS363D – AUGUST 2002 – REVISED MAY 2008
TYPICAL CHARACTERISTICS: 5 V (continued)
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}
−60
HD2
−70
−80
HD3
−90
−100
0
0.5 1 1.5 2 2.5 3 3.5 4
V_O − Output Voltage Swing − V
Figure 44.
THIRD-ORDER OUTPUT INTERCEPT
POINT
vs
FREQUENCY
60
Gain = 1
R_f = 499 Ω
50
V_O = 2 V_PP
V_S = 5 V
40
200 kHz Tone Spacing
Normalized to 50 Ω
30
HARMONIC DISTORTION
vs
LOAD RESISTANCE
0
Single-Ended Input to
−10
Differential Output
Gain = 1
−20
V_O = 2 V_PP
R_f = 499 Ω
−30
V_S = ±5 V
−40
HD3, 30 MHz
HD2, 30 MHz
−50
−60
−70
−80
−90 HD3, 8 MHz
HD2, 8 MHz
−100
0
400
800
1200
R_L − Load Resistance − Ω
Figure 45.
1600
SLEW RATE
vs
DIFFERENTIAL OUTPUT VOLTAGE
STEP
1200
Gain = 1
Fall
R_L = 800 Ω
1000 _{Rf = 499 Ω}
V_S = 5 V
800
Rise
600
20
400
Normalized to 200 Ω
10
R_L = 800 Ω
200
0
0
20
40
60
80 100
f − Frequency − MHz
Figure 47.
SETTLING TIME
3
Rising Edge
2
Gain = 1
1
R_L = 800 Ω
R_f = 499 Ω
0
f= 1 MHz
V_S = 5 V
−1
Falling Edge
−2
−3
0 5 10 15 20 25 30 35 40
t − Time − ns
Figure 50.
0
0 0.5 1 1.5 2 2.5 3 3.5 4
V_O − Differential Output Voltage Step − V
Figure 48.
OVERDRIVE RECOVERY
5
2.5
Gain = 4
4
R_L = 800 Ω
2
3
R_f = 499 Ω
1.5
Overdrive = 4.5 V
2
V_S = ±5 V
1
1
0.5
0
0
−1
−0.5
−2
−1
−3
−1.5
−4
−2
−5
−2.5
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
t − Time − µs
Figure 51.
THIRD-ORDER INTERMODULATION
DISTORTION
vs
FREQUENCY
−30
Single-Ended Input to
Differential Output
−40
Gain = 1
−50 ^{RL = 800 Ω}
R_f = 499 Ω
−60 ^{VS = 5 V}
V_O = 2 V_PP
−70
V_O = 1 V_PP
−80
−90
−100
10
200 kHz Tone Spacing
100
f − Frequency − MHz
Figure 46.
SETTLING TIME
1.5
Rising Edge
1.0
Gain= 1
0.5
R_L = 800 W
R_F = 499 W
0
f = 1 MHz
V_S = 5 V
-0.5
Falling Edge
-1.0
-1.5
0
5 10 15 20 25 30
t - Time - ns
Figure 49.
OVERDRIVE RECOVERY
6
3
Gain = 4
5 _{RL = 800 Ω}
4 R_f = 499 Ω
2
3 Overdrive = 5.5 V
2 ^{VS = ±5 V}
1
1
0
0
−1
−2
−1
−3
−4
−2
−5
−6
−3
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
t − Time − µs
Figure 52.
Copyright © 2002–2008, Texas Instruments Incorporated
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