THS3201 Datasheet, PDF (8/29 Pages) Texas Instruments – 1.8-GHz, LOW DISTORTION, CURRENT FEEDBACK AMPLIFIER

THS3201
SLOS416A − JUNE 2003 − REVISED JANUARY 2004
V_S = ±7.5 V Graphs
NONINVERTING SMALL SIGNAL
FREQUENCY RESPONSE
8
RF = 619 Ω
7
RF = 768 Ω
6
5
RF = 1 kΩ
4
3
Gain = 2.
2
RL = 100 Ω,
1
VO = 0.2 VPP.
VS = ±7.5 V
0
100 k 1 M 10 M
100 M
1 G 10 G
f − Frequency − Hz
Figure 1
NONINVERTING SMALL SIGNAL
FREQUENCY RESPONSE
24
22
G = 10, RF = 487 Ω
20
18
16
G = 5, RF = 619 Ω
14
12 ^{RL = 100 Ω,}
10
VO = 0.2 VPP.
VS = ±7.5 V
8
6
G = 2, RF = 768 Ω
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 2
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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,
VO = 0.2 VPP.
10 _{VS = ±7.5 V}
8
6
4
G = −2, RF = 576 Ω
2
0
−2
G = −1, RF = 619 Ω
−4
100 k 1 M 10 M
100 M 1 G
10 G
f − Frequency − Hz
Figure 3
INVERTING LARGE SIGNAL
FREQUENCY RESPONSE
16
G =−5, RF = 576 Ω
14
12
10
8
G = 2, RF = 715 Ω
6
4
RL = 100 Ω,
2 ^{VO = 2 VPP.}
VS = ±7.5 V
0
100 k 1 M
10 M
100 M
1G
f − Frequency − Hz
Figure 4
CAPACITIVE LOAD
FREQUENCY RESPONSE
16
R(ISO) = 30 Ω, CL = 22 pF
14
R(ISO) = 20 Ω,
12
CL = 50 pF
10 _{Gain = 5}
8 ^{RF = 619 Ω}
RL = 100 Ω
6 ^{VS = ±7.5 V}
4 R(ISO) = 15 Ω,
2
CL = 100 pF
0
R(ISO) = 20 Ω,
CL = 47 pF
−2
0
100 200
300 400
500
f − Frequency − MHz
Figure 7
INVERTING LARGE SIGNAL
FREQUENCY RESPONSE
16
14
12
G =−5, RF = 549 Ω
10
8 ^{RL = 100 Ω,}
VO = 2 VPP.
6 VS = ±7.5 V
4
2
G = −1, RF = 576 Ω
0
−2
−4
100 k 1 M
10 M
100 M
1G
f − Frequency − Hz
Figure 5
0.1 dB GAIN FLATNESS
FREQUENCY RESPONSE
6.4
Gain = 2,
6.3 RF = 768 Ω,
RL = 100 Ω,
6.2 _{VO = 0.2 VPP,}
VS = ±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 6
10 G
RECOMMENDED RISO
vs
CAPACTIVE LOAD
60
Gain = 5,
RF = 619 Ω
50
RL = 100 Ω,
VS = ±7.5 V
40
30
20
_ ^RISO
+
10
CL
0
10
100
CL − Capacitive Load − pF
Figure 8
2nd HARMONIC DISTORTION
vs
FREQUENCY
−40
VO = 2 VPP,
−50
RL = 100 Ω,
VS = ±7.5 V
−60
G = 1, RF = 1.2 kΩ
−70
−80
−90
−100
1
G = 5, RF = 619 Ω
G = 2, RF = 768 Ω
10
100
f − Frequency − MHz
Figure 9
8