THS3120_14 Datasheet, PDF (9/36 Pages) Texas Instruments – LOW-NOISE, HIGH-OUTPUT DRIVE, CURRENT-FEEDBACK OPERATIONAL AMPLIFIERS

THS3120
THS3121
www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009
TYPICAL CHARACTERISTICS (±15 V)
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NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
9
8
R_F = 475 Ω
7
R_F = 649 Ω
6
5
R_F = 750 Ω
4
3
Gain = 2,
2 _{RL = 50 Ω,}
1 ^{VO = 0.2 VPP,}
V_S = ±15 V
0
1M
10 M
100 M
1G
f − Frequency − Hz
NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
24
22 _{G = 10, RF = 301 Ω}
20
18
16 _{G = 5, RF = 499 Ω}
14
12
10
R_L = 50 Ω,
V_O = 0.2 V_PP,
V_S = ±15 V
8
G = 2, R_F = 649 Ω
6
4
2
G = 1, R_F = 806 Ω
0
−2
−4
100 k
1M
10 M
100 M 1 G
f − Frequency − Hz
Figure 1.
Figure 2.
INVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
24
22
20
18 G = -10, RF = 365 Ω
16
14
12
G = -5, R_F = 499 Ω
10
R_L = 50 Ω,
V_O = 0.2 V_PP,
V_S = ±15 V
8
6
4 ^{G = -2, R}F ^{= 681 Ω}
2
0
-2
G = -1, R_F = 681 Ω
-4
100 k
1M
10 M
100 M 1 G
f - Frequency - Hz
Figure 3.
0.1-dB FLATNESS
6.3
Gain = 2,
6.2 ^{RF = 562 Ω,}
R_L = 50 Ω,
V_O = 0.2 V_PP,
6.1 VS = ±15 V
6
5.9
5.8
5.7
100 k
1M
10 M
f - Frequency - Hz
Figure 4.
100 M
NONINVERTING LARGE-SIGNAL
FREQUENCY RESPONSE
16
G = 5, R_F = 499 Ω
14
12
10
8
G = 2, R_F = 681 Ω
6
4
R_L = 50 Ω,
2 ^{VO = 2 VPP,}
V_S = ±15 V
0
100 k
1M
10 M
100 M 1 G
f − Frequency − Hz
Figure 5.
INVERTING LARGE-SIGNAL
FREQUENCY RESPONSE
16
G = -5, R_F = 499 Ω
14
12
10
8
G =-1, R_F = 681 Ω
6
4
2
0
R_L = 50 Ω,
-2
V_O = 2 V_PP,
V_S = ±15 V
-4
1M
10 M
100 M
1G
f - Frequency - Hz
Figure 6.
FREQUENCY RESPONSE
CAPACITIVE LOAD
16
R_(ISO) = 49.9 Ω C_L = 10 pF
14
12
R_(ISO) = 40.2 Ω
10
C_L = 22 pF
8
R_(ISO) = 30 Ω
6
C_L = 47 pF
4
R_(ISO) = 20 Ω
C_L = 100 pF
2
Gain = 5,
0 RL = 50 Ω
-2
V_S = ±15 V
10 M
Capacitive Load - Hz
100 M
Figure 7.
RECOMMENDED R_ISO
vs
CAPACITIVE LOAD
60
Gain = 5,
50
R_L = 50 Ω,
V_S = ±15 V
40
30
20
10
0
10
100
C_L − Capacitive Load − pF
Figure 8.
2nd HARMONIC DISTORTION
vs
FREQUENCY
-30
V_O = 2 V_PP,
-40
R_L = 50 Ω,
V_S = ±15 V
-50
G = 5,
R_F = 499 Ω
-60
-70
G = 2,
R_F = 649 Ω
-80
-90
-100
100 k
G = 2, R_F = 649 Ω,
R_L = 499 Ω
1M
10 M
f - Frequency - Hz
Figure 9.
100 M
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