OPA695 Datasheet, PDF (14/48 Pages) Texas Instruments – Ultra-Wideband, Current-Feedback OPERATIONAL AMPLIFIER With Disable

OPA695
SBOS293H – DECEMBER 2003 – REVISED DECEMBER 2015
Typical Characteristics (continued)
G = +8, R_F = 402 Ω, R_L = 100 Ω, unless otherwise noted.
100
Inverting Input Current Noise 22pA/√Hz
Noninverting Input Current Noise 19pA/√Hz
10
1
10³
Input Voltage Noise
10⁴
10⁵
10⁶
Frequency (Hz)
1.7nV/√Hz
10⁷
10⁸
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45
Inverting
40
Noninverting
35
G = –8
50 Ω
PI
50 Ω
OPA695
402Ω
PO
50 Ω
G = 12dB to matched load.
30 ^{G = +8}
PI
25 ^50Ω
OPA695
402Ω
50 Ω
PO
50 Ω
20
15
20
56.2Ω
G = 12dB to matched load.
40 60 80 100 120 140 160 180 200 220 240
Frequency (MHz)
Figure 13. Input Voltage and Current Noise Density
0
–10
G = –8
–20
VSWR < 1.2:1
–30
–40
–50
–60
10M
100M
Frequency (Hz)
G = +8
1G
Figure 14. Two-Tone 3rd-Order Intermodulation Intercept ±5
V
0
G = ±8V/V
–10
Without
Trim Cap
–20
VSWR < 1.2:1
–30
With
Trim Cap
–40
–50
–60
10M
OPA695
50Ω
S₂₂
Trim Cap 2.5pF
100M
1G
Frequency (Hz)
Figure 15. Input Return Loss vs Frequency (S₁₁)
35
0.5dB Peaking
30
Allowed
25
20
15
10
5
0
5
10
100
Capacitive Load (pF)
Figure 16. Output Return Loss vs Frequency (S₂₂)
21
C_L = 10pF
18
15
VI
12
9
10M
C_L = 100pF
+5V
RS
50 Ω OPA695
CL
– 5V ^{402 Ω}
VO
1k Ω
57.4 Ω
1kΩ load is optional
100M
Frequency (Hz)
C_L = 20pF
C_L = 50pF
1G
Figure 17. R_S vs Capacitive Load
Figure 18. Small-Signal Frequency Response vs Capacitive
Load
14
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