OPA4872 Datasheet, PDF (5/27 Pages) Texas Instruments – 4:1 High-Speed Multiplexer

OPA4872
www.ti.com
SBOS346C – JUNE 2007 – REVISED MARCH 2011
TYPICAL CHARACTERISTICS
At T_A = +25°C, G = +2V/V, R_F = 523Ω, and R_L = 150Ω, unless otherwise noted.
SMALL-SIGNAL FREQUENCY RESPONSE
SMALL-SIGNAL FREQUENCY RESPONSE
7
Bandwidth
6
0.3
6
V_O = 500mV_PP
0.2
3
G = +1V/V
5
Normalized
4
Flatness
3
2
V_O = 500mV_PP
1 _{RL = 150W}
G = +2V/V
0
1M
10M
100M
Frequency (Hz)
Figure 1.
0.1
0
-0.1
-0.2
-0.3
-0.4
1G
0
-3
-6
-9
-12
1M
G = +2V/V
G = +4V/V
10M
100M
Frequency (Hz)
Figure 2.
1G 2G
7
6
5
4
3
2
1
0
-1
-2
-3
0
LARGE-SIGNAL FREQUENCY RESPONSE
V_O = 2V_PP
V_O = 0.5V_PP
V_O = 1V_PP
V_O = 4V_PP
200M
400M
600M
800M
1G
Frequency (Hz)
Figure 3.
NONINVERTING PULSE RESPONSE
0.5
2.5
0.4 ^{RL = 150W}
2.0
G = +2V/V
0.3
Large-Signal 4V_PP
Right Scale
1.5
0.2
1.0
0.1
Small-Signal 0.4V_PP
Left Scale
0.5
0
0
-0.1
-0.5
-0.2
-1.0
-0.3
-1.5
-0.4
-2.0
-0.5
-2.5
Time (10ns/div)
Figure 4.
RECOMMENDED R_S vs CAPACITIVE LOAD
100
90
80
70
60
50
40
30
20
10
0
1
10
100
1000
Capacitive Load (pF)
Figure 5.
FREQUENCY RESPONSE vs CAPACITIVE LOAD
8
7
6
5
4
3
VI
75W
2
1
75W
0
75W
-1
-2
75W
-3
1
C_L = 10pF
+
RS
C_L = 22pF
VO
-
523W
CL
1kW⁽¹⁾
523W
C_L = 47pF
NOTE: (1) Optional.
C_L = 100pF
10
100
Frequency (MHz)
300
Figure 6.
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