THS3201-EP_14 Datasheet, PDF (15/34 Pages) Texas Instruments – 1.8-GHz LOW-DISTORTION CURRENT-FEEDBACK AMPLIFIER

THS3201-EP
www.ti.com ..................................................................................................................................................... SGLS283B – APRIL 2005 – REVISED JANUARY 2009
V_S = ±7.5 V Graphs (continued)
0.040
0.035
° ^0.030
0.025
DIFFERENTIAL PHASE
vs
NUMBER OF LOADS
Gain = 2
R_F = 768 kΩ
V_S = ±7.5 V
40 IRE - NTSC and Pal
Worst Case ±100 IRE Ramp
0.020
PAL
0.015
0.010
NTSC
0.005
0
0123 45678
Number of Loads - 150 Ω
Figure 36.
CLOSED-LOOP OUTPUT IMPEDANCE
vs
FREQUENCY
1000
Gain = 2
100 ^RF ^{= 715 Ω}
R_L = 100 Ω
V_S = ±7.5 V
10
1
0.1
0.01
0.001
100 k 1 M
10 M
1M
1G
f - Frequency - Hz
Figure 37.
NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
24
22
G = 10, R_F = 464 Ω
20
18
16
G = 5, R_F = 576 Ω
14
12 ^{RL = 100 Ω,}
10
V_O = 0.2 V_PP.
V_S = ±5 V
8
G = 2, R_F = 715 Ω
6
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 38.
2nd HARMONIC DISTORTION
vs
FREQUENCY
-40
G = 10
RF = 464 W, RG = 51.1 W
-50
G=5
RF = 576 W,
-60 _{RG = 143 W}
-70
-80
-90
-100
1
Vs = ±5V
Vout = 2VPP
RL = 100 W
G=2
RF = 715 W, RG = 715 W
10
100
f - Frequency - MHz
Figure 41.
V_S = ±5 V Graphs
INVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
24
22
G = -10, R_F = 499 Ω
20
18
16
G = -5, R_F = 549 Ω
14
12 ^{RL = 100 Ω,}
10
8
V_O = 0.2 V_PP.
V_S = ±5 V
6
4
G = -2, R_F = 576 Ω
2
0
-2
G =-1, R_F = 576 Ω
-4
100 k 1 M 10 M
100 M 1 G
10 G
f - Frequency - Hz
Figure 39.
3rd ORDER HARMONIC DISTORTION
vs
FREQUENCY
-60
-65 _{G = 2}
-70 ^{RF = 715 W, RG = 715 W}
-75
Vs = ±5V
-80
Vout = 2VPP
RL = 100 W
-85
G=5
-90
RF = 576 W, RG = 143 W
-95 G = 10
-100
RF = 464 W, RG = 51.1 W
1
10
100
f - Frequency - MHz
Figure 42.
0.1-dB GAIN FLATNESS
FREQUENCY RESPONSE
6.4
Gain = 2,
6.3 RF = 715 Ω,
R_L = 100 Ω,
6.2 V_O = 0.2 V_PP,
V_S = ±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 40.
10 G
2nd ORDER HARMONIC DISTORTION
G=2
vs
OUTPUT VOLTAGE
-30
Vs = ±5V
-40 ^{G = 2}
64MHz
RF = 715 W, RG = 715 W
-50 ^{RL = 100 W}
-60
32MHz
-70
-80
-90
-100
1MHz
2MHz
16MHz
4MHz
8MHz
-110
0
1
2
3
4
5
6
Vout - Output Voltage - V_PP
Figure 43.
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