THS3201-EP_14 Datasheet, PDF (11/34 Pages) Texas Instruments – 1.8-GHz LOW-DISTORTION CURRENT-FEEDBACK AMPLIFIER

THS3201-EP
www.ti.com ..................................................................................................................................................... SGLS283B – APRIL 2005 – REVISED JANUARY 2009
NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
8
R_F = 619 Ω
7
R_F = 768 Ω
6
5
R_F = 1 kΩ
4
3
Gain = 2.
2
R_L = 100 Ω,
1
V_O = 0.2 V_PP.
V_S = ±7.5 V
0
100 k 1 M 10 M
100 M
f - Frequency - Hz
Figure 2.
1 G 10 G
INVERTING LARGE-SIGNAL
FREQUENCY RESPONSE
16
G =-5, R_F = 576 Ω
14
12
10
8
G = 2, R_F = 715 Ω
6
4
R_L = 100 Ω,
2 ^VO ^{= 2 V}PP^.
V_S = ±7.5 V
0
100 k 1 M 10 M
100 M
1G
f - Frequency - Hz
Figure 5.
CAPACITIVE LOAD
FREQUENCY RESPONSE
16
R_(ISO) = 30 Ω, C_L = 22 pF
14
R_(ISO) = 20 Ω,
12
C_L = 50 pF
10 _{Gain = 5}
8 ^{RF = 619 Ω}
R_L = 100 Ω
6 ^VS ^{= ±7.5 V}
4
R_(ISO) = 15 Ω,
2
C_L = 100 pF
0
R_(ISO) = 20 Ω,
C_L = 47 pF
-2
0
100 200
300 400
500
f - Frequency - MHz
Figure 8.
V_S = ±7.5 V Graphs
NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
24
22
G = 10, R_F = 487 Ω
20
18
16
G = 5, R_F = 619 Ω
14
12 ^{RL = 100 Ω,}
10
V_O = 0.2 V_PP.
V_S = ±7.5 V
8
6
G = 2, R_F = 768 Ω
4
2
G =1, R_F = 1.2 kΩ
0
-2
-4
100 k 1 M 10 M 100 M 1 G
10 G
f - Frequency - Hz
Figure 3.
INVERTING LARGE-SIGNAL
FREQUENCY RESPONSE
16
14
12
G =-5, R_F = 549 Ω
10
8 ^{RL = 100 Ω,}
V_O = 2 V_PP.
6 VS = ±7.5 V
4
2
G = -1, R_F = 576 Ω
0
-2
-4
100 k 1 M
10 M
100 M
1G
f - Frequency - Hz
Figure 6.
RECOMMENDED SWITCHING
RESISTANCE
vs
CAPACITIVE LOAD
60
Gain = 5,
R_F = 619 Ω
50
R_L = 100 Ω,
V_S = ±7.5 V
40
30
20
_ ^RISO
+
10
C_L
0
10
100
C_L - Capacitive Load - pF
Figure 9.
INVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
24
22
G = -10, R_F = 499 Ω
20
18
16
G = -5, R_F = 549 Ω
14
12
R_L = 100 Ω,
V_O = 0.2 V_PP.
10 _{VS = ±7.5 V}
8
6
4
G = -2, R_F = 576 Ω
2
0
-2
G = -1, R_F = 619 Ω
-4
100 k 1 M 10 M
100 M 1 G
10 G
f - Frequency - Hz
Figure 4.
0.1-dB GAIN FLATNESS
FREQUENCY RESPONSE
6.4
Gain = 2,
6.3 R_F = 768 Ω,
R_L = 100 Ω,
6.2 _{VO = 0.2 VPP,}
V_S = ±7.5 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 7.
10 G
2nd HARMONIC DISTORTION
vs
FREQUENCY
-40
G = 10
RF = 499 W, RG = 54.9 W
-50
G=5
RF = 619 W,
-60 _{RG = 154 W}
-70
-80
-90
-100
1
Vs = ±7.5V
Vout = 2VPP
RL = 100 W
G=2
RF = 768 W, RG = 768 W
10
100
f - Frequency - MHz
Figure 10.
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