OPA2695 Datasheet, PDF (17/40 Pages) Texas Instruments – Dual, Ultra-Wideband, Current-Feedback OPERATIONAL AMPLIFIER with Disable

OPA2695
www.ti.com..................................................................................................................................................................................................... SBOS354 – APRIL 2008
TYPICAL CHARCTERISTICS: V_S = 5V, Differential Operation
At G_D = 10V/V, R_F = 500Ω, and R_L = 800Ω, unless otherwise noted.
+2.5V
1/2
OPA2695
Z_I = R_T || 2R_G
R_G
V_I
1:1
R_T
R_G
V_{O =}
V_I
500W
R_G
= G_D
-2.5V
R_F
500W
R_F
500W
+2.5V
1/2
OPA2695
R_L
800W
V_O
-2.5V
Figure 57.
DIFFERENTIAL LARGE-SIGNAL FREQUENCY RESPONSE
21.0
20.5
20.0
19.5
19.0
18.5
2V_PP
18.0
17.5
17.0
4V_PP
16.5
16.0
10
8V_PP
100
400
Frequency (MHz)
Figure 59.
RECOMMENDED R_S vs CAPACITIVE LOAD
300
100
10
V_O = 1.25V_PP
R_L = 1kW
1
1
10
100
Capacitive Load (pF)
Figure 61.
1000
DIFFERENTIAL SMALL-SIGNAL FREQUENCY RESPONSE
1
0
-1
-2
-3
G_D = 5V/V
-4
-5
G_D = 10V/V
-6
G_D = 20V/V
-7
-8
10M
100M
1G
Frequency (Hz)
Figure 58.
2-TONE, 3RD-ORDER INTERMODULATION INTERCEPT
50
45
40
OPA2695
35
P_I
1:1 50W
500W
50W
500W
P_O
30
OPA2695
25
20 40 60 80 100 120 140 160 180 200 220 240
Center Frequency (MHz)
Figure 60.
FREQUENCY RESPONSE vs CAPACITIVE LOAD
9
V_O = 1.25V_PP
6
R_L = 1kW
+5V
C_L = 10pF
3
PI
0
OPA2695
50W
500W
50W
500W
RS
RS
CL
1kW⁽¹⁾ PO
C_L = 22pF
-3
-6
-9
10
OPA2695
NOTE: (1) Optional 1kW load.
-5V
C_L = 47pF
C_L = 100pF
100
400
Frequency (MHz)
Figure 62.
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Product Folder Link(s): OPA2695
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