THS4631 Datasheet, PDF (5/27 Pages) Texas Instruments – HIGH-VOLTAGE, HIGH SLEW RATE, WIDEBAND FET-INPUT OPERATIONAL AMPLIFIER

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THS4631
SLOS451A – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS (±15 V GRAPHS)
T_A = 25°C, G = 2, R_F = 499 Ω, R_L = 1 kΩ, Unless otherwise noted.
50 Ω Source
49.9 Ω
+15 V
+
THS4631
_
Test Data
Mesurement Point
953 Ω
50 Ω Test
Equipment
49.9 Ω
R_G
499 Ω
−15 V
R_F
499 Ω
SMALL SIGNAL FREQUENCY
RESPONSE
50
VO = 200 mVPP
40 ^{G = 100, RF = 11.3 kΩ, RG = 115 Ω}
30
G = 10, RF = 499 Ω,
RG = 54.9 Ω
20
G = 5, RF = 499 Ω,
RG = 124 Ω
10 G = 2, RF = 499 Ω,
RG = 499 Ω
0 ^{G = 1, RF = 0 Ω}
105 MHz
−10
100 k 1 M
10 M 100 M
1G
f − Frequency − Hz
Figure 1.
SMALL SIGNAL FREQUENCY
RESPONSE
5
VO = 200 mVPP
4
3
CF = 2.2 pF
2
CF = 0 pF
1
0
102 MHz
−1
CF = 5.2 pF
−2
−3 _{G = −1, RF = 499 Ω,}
−4 ^{RG = 499 Ω}
−5
100 k 1 M
10 M 100 M
1G
f − Frequency − Hz
Figure 4.
C_F
SMALL SIGNAL FREQUENCY
RESPONSE
10
VO = 200 mVPP
9
8
CF = 5.6 pF
CF = 0 pF
7
6
5
CF = 8.2 pF
105 MHz
4
3
2
G = 2, RF = 499 Ω,
1 ^{RG = 499 Ω}
0100 _k
1M
10 M
100 M
1G
f − Frequency − Hz
Figure 2.
LARGE SIGNAL FREQUENCY
RESPONSE
8
V_O = 5 V_PP
7
6
V_O = 0.5 V_PP
5
4
V_O = 2 V_PP
105 MHz
3
2
1
0
100 k 1 M
10 M
100 M
1G
f − Frequency − Hz
Figure 5.
0.1-dB FLATNESS
6.3
6.2
6.1
C_F = 8.2 pF
6
5.9
5.8
38 MHz
5.7
5.6
100 k
1M
10 M
f − Frequency − Hz
Figure 3.
100 M
FREQUENCY RESPONSE
vs
CAPACiTIVE LOAD
4
G = 1,
R_F = 0 Ω,
2 R_L = 1 kΩ
R_ISO = 50 Ω,
C_L = 10 pF
0
R_ISO = 30 Ω,
−2
C_L = 56 pF
R_ISO = 20 Ω,
−4
C_L = 100 pF
50 Ω +15 V
Source
−6
RISO
THS4631
−8
−15 V
RL
CL
0Ω
−10
100 k
1M
10 M
100 M
1G
f − Frequency − Hz
Figure 6.
5