THS3201 Datasheet, PDF (12/29 Pages) Texas Instruments – 1.8-GHz, LOW DISTORTION, CURRENT FEEDBACK AMPLIFIER

THS3201
SLOS416A − JUNE 2003 − REVISED JANUARY 2004
V_S = ±5 V Graphs
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NONINVERTING SMALL SIGNAL
FREQUENCY RESPONSE
24
22
G = 10, RF = 464 Ω
20
18
16
G = 5, RF = 576 Ω
14
12 ^{RL = 100 Ω,}
10
VO = 0.2 VPP.
VS = ±5 V
8
G = 2, RF = 715 Ω
6
4
2
G =1, RF = 1.2 kΩ
0
−2
−4
100 k 1 M 10 M 100 M 1 G
10 G
f − Frequency − Hz
Figure 35
2nd HARMONIC DISTORTION
vs
FREQUENCY
−40
VO = 2 VPP,
−50
RL = 100 Ω,
VS = ±5 V
−60 G = 1, RF = 1.2 kΩ
−70
G = 5, RF = 576 Ω
−80
G = 2, RF = 715 Ω
−90
−100
1
10
100
f − Frequency − MHz
Figure 38
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
−40
−45
HD2, RL = 499 Ω
−50
−55 ^{HD2, RL = 100 Ω}
−60
−65
−70
HD3, RL = 100 Ω
−75
−80
HD3, RL = 499 Ω
−85
−90
−95
−100
0
Gain = 5
RF = 576 Ω
f = 32 MHz
VS = ±5 V
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO − Output Voltage Swing − ± V
Figure 41
INVERTING SMALL SIGNAL
FREQUENCY RESPONSE
24
22
G = −10, RF = 499 Ω
20
18
16
G = −5, RF = 549 Ω
14
12 ^{RL = 100 Ω,}
10
8
VO = 0.2 VPP.
VS = ±5 V
6
4
G = −2, RF = 576 Ω
2
0
−2
G =−1, RF = 576 Ω
−4
100 k 1 M 10 M
100 M 1 G
f − Frequency − Hz
10 G
Figure 36
3rd HARMONIC DISTORTION
vs
FREQUENCY
−40
VO = 2 VPP,
−50
RL = 100 Ω,
VS = ±5 V
−60 _{G = 1, RF = 1.2 kΩ}
−70
−80
−90
−100
1
G = 2, RF = 715 Ω
G = 5, RF = 576 Ω
10
100
f − Frequency − MHz
Figure 39
THIRD-ORDER INTERMODULATION
DISTORTION
vs
FREQUENCY
−40
RL = 100 Ω
−45 VO = 2VPP Envelope
−50 ^{VS = ±5 V}
200 kHz Tone Spacing
−55
−60
G = 2, RF = 715 Ω
−65
−70
−75
−80
−85
−90
10
G = 5, RF = 576 Ω
G = 10, RF = 464 Ω
100
200
f − Frequency − MHz
Figure 42
0.1 dB GAIN FLATNESS
FREQUENCY RESPONSE
6.4
Gain = 2,
6.3 RF = 715 Ω,
RL = 100 Ω,
6.2 VO = 0.2 VPP,
VS = ±5 V
6.1
6
5.9
5.8
5.7
5.6
100 k 1 M 10 M 100 M 1 G
f − Frequency − Hz
Figure 37
10 G
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
−50
−55
HD2, RL = 499 Ω
−60
HD2, RL = 100 Ω
−65
−70
−75
HD3, RL = 499 Ω
−80
HD3, RL = 100 Ω
−85
Gain = 5
−90
RF = 576 Ω
−95
f = 8 MHz
VS = ±5 V
−100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO − Output Voltage Swing − ± V
Figure 40
THIRD-ORDER OUTPUT
INTERCEPT POINT
vs
FREQUENCY
55
VO = 2 VPP Envelope
RL = 100 Ω
50
VS = ±5 V
200 kHz Tone Spacing
45
G = 10, RF = 464 Ω
G = 2, RF = 715 Ω
40
35
G = 5, RF = 576 Ω
30
0
20
40
60
80
100
f − Frequency − MHz
Figure 43
12