THS3201 Datasheet, PDF (9/29 Pages) Texas Instruments – 1.8-GHz, LOW DISTORTION, CURRENT FEEDBACK AMPLIFIER

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THS3201
SLOS416A − JUNE 2003 − REVISED JANUARY 2004
3rd HARMONIC DISTORTION
vs
FREQUENCY
−40
VO = 2 VPP,
−50 ^{RL = 100 Ω,}
VS = ±7.5 V
−60
G = 1, RF = 1.2 kΩ
−70
G = 2, RF = 768 Ω
−80
−90
−100
1
G = 5, RF = 619 Ω
10
100
f − Frequency − MHz
Figure 10
THIRD-ORDER INTERMODULATION
DISTORTION
vs
FREQUENCY
−60
RL = 100 Ω
−65 ^{VO = 2VPP Envelope}
VS = ±7.5 V
−70 200 kHz Tone Spacing
−75
G = 2, RF = 768 Ω
−80 G = 5, RF = 619 Ω
−85
−90
−95
−100
10
G = 10, RF = 487 Ω
100
200
f − Frequency − MHz
Figure 13
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
−60
Gain = 5
−65 RF = 619 Ω
f = 8 MHz
−70 VS = ±7.5 V
HD2, RL = 499 Ω
−75 ^{HD2, RL = 100 Ω}
−80
−85
−90
−95
HD3, RL = 100 Ω
−100
HD3, RL = 499 Ω
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO − Output Voltage Swing − ± V
Figure 11
THIRD-ORDER OUTPUT
INTERCEPT POINT
vs
FREQUENCY
60
VO = 2 VPP Envelope
RL = 100 Ω
55
VS = ±7.5 V
200 kHz Tone Spacing
50
G = 10, RF = 487 Ω
45
40
G = 5, RF = 619 Ω
35
0
G = 2, RF = 768 Ω
20
40
60
80
100
f − Frequency − MHz
Figure 14
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
−50
−55
HD2
−60 RL = 100 Ω
HD2, RL = 499 Ω
−65
−70
HD3,
−75
RL = 499 Ω
−80
−85
HD3, RL = 100 Ω
−90
−95
Gain = 5, RF = 619 Ω
f = 32 MHz, VS = ±7.5 V
−100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO − Output Voltage Swing − ± V
Figure 12
S − PARAMETER
vs
FREQUENCY
0
VS = ±7.5 V
Gain = +10
C = 0 pF
−20
S11
−40 ^S22
S12
−60
−80
−100
1M
RG
50 Ω
Source
RF
−
+
50 Ω
C
50 Ω
50 Ω
10 M 100 M 1 G
f − Frequency − Hz
10 G
Figure 15
S − PARAMETER
vs
FREQUENCY
0
VS = ±7.5 V
Gain = +10
−20 ^{C = 3.3 pF}
−40 ^S22
S12
−60 _S11
−80
−100
1M
RG
50 Ω
Source
RF
−
+
50 Ω
C
50 Ω
50 Ω
10 M 100 M 1 G
f − Frequency − Hz
10 G
Figure 16
INPUT VOLTAGE
AND CURRENT NOISE
vs
FREQUENCY
50
4
VS = ±7.5 V and ±5 V
45
TA = 25°C
3.5
40
3
35
Vn
2.5
30
1.5
25
Inverting
Noise Current
0.5
20
0
Noninverting
15
Current Noise
10
100 k
1M
10 M
f − Frequency − Hz
Figure 17
100 M
9