THS3122 Datasheet, PDF (7/20 Pages) Texas Instruments – LOW-NOISE, HIGH-SPEED, 450 mA CURRENT FEEDBACK AMPLIFIERS

TYPICAL CHARACTERISTICS
SMALL SIGNAL CLOSED LOOP GAIN
vs
FREQUENCY
15
12
RF = 200 Ω
9
6
RF = 470 Ω
3
0
RF = 560 Ω
−3
−6
VCC = ±15 V,
−9 _{RL = 50 Ω}
−12
0.1
1
10
100
f − Frequency − MHz
1000
SMALL AND LARGE SIGNAL OUTPUT
vs
FREQUENCY
18
4 VPP
12
G = 2, VCC = ±5 V,
RL = 680 Ω, RL = 50 Ω
2 VPP
6
1 VPP
0
0.5 VPP
−6
0.25 VPP
−12
0.125 VPP
−18
−24
0.1
1
10
100
f − Frequency − MHz
1000
Figure 10
HARMONIC DISTORTION
vs
FREQUENCY
0
−10 ^{G = 2,}
VCC = ±5 V,
−20 _{VO(PP) = 2 V,}
−30 ^{RF = 470 Ω,}
RL = 50 Ω
−40
3rd Harmonic
−50
5th Harmonic
−60
−70 ^{2nd Harmonic}
−80
−90
−100
0.1
4th Harmonic
1
10
100
f − Frequency − MHz
Figure 11
HARMONIC DISTORTION
vs
FREQUENCY
0
−10 ^{G = 2,}
VCC = ±15 V,
−20 VO(PP) = 2 V,
−30
RF = 470 Ω,
RL = 50 Ω
−40
2nd Harmonic
−50
3rd Harmonic
−60
5th Harmonic
−70
−80
−90
4th Harmonic
−100
0.1
1
10
100
f − Frequency − MHz
Figure 13
HARMONIC DISTORTION
vs
PEAK-TO-PEAK OUTPUT VOLTAGE
0
−10 ^{G = 2,}
VCC = ±5 V,
−20 f = 1 MHz,
−30
RF = 470 Ω,
RL = 50 Ω
−40
−50
5th Harmonic
−60 ^{2nd Harmonic}
−70
3rd Harmonic
−80
−90
−100
0 0.5 1
4th Harmonic
1.5 2 2.5 3 3.5 4
4.5 5
VPP − Peak-to-Peak Output Voltage − V
Figure 16
Figure 14
HARMONIC DISTORTION
vs
PEAK-TO-PEAK OUTPUT VOLTAGE
0
G = 2,
−10 _{VCC = ±15 V,}
−20 f = 1 MHz,
−30
RF = 470 Ω,
RL = 50 Ω
−40
−50
5th Harmonic
−60
2nd Harmonic
−70 _{3rd Harmonic}
−80
−90
4th Harmonic
−100
0123456789
VPP − Peak-to-Peak Output Voltage − V
Figure 17
THS3122
THS3125
SLOS382 − SEPTEMBER 2001
SMALL AND LARGE SIGNAL OUTPUT
vs
FREQUENCY
18
4 VPP
12
G = 2, VCC = ±15 V,
RL = 680 Ω,RL = 50 Ω
2 VPP
6
1 VPP
0
0.5 VPP
−6
0.25 VPP
−12
0.125 VPP
−18
−24
0.1
1
10
100
f − Frequency − MHz
1000
Figure 12
HARMONIC DISTORTION
vs
FREQUENCY
0
G = 2,
−10 _{VCC = ±15 V,}
−20 VO(PP) = 8 V,
−30
RF = 470 Ω,
RL = 50 Ω
−40
−50
−60 ^{3rd Harmonic}
2nd Harmonic
−70
5th Harmonic
−80
−90
−100
0.1
4th Harmonic
1
10
f − Frequency − MHz
Figure 15
VOLTAGE NOISE AND CURRENT NOISE
vs
FREQUENCY
100
VCC = ±5 V to ±15 V
TA = 25°C
In−
10
In+
Vn
1
0.01
0.1
1
10
100
f − Frequency − kHz
Figure 18
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