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OPA3681 Datasheet, PDF (10/22 Pages) Burr-Brown (TI) – Triple Wideband, Current-Feedback OPERATIONAL AMPLIFIER With Disable | |||
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TYPICAL PERFORMANCE CURVES: VS = +5V (Cont.)
G = +2, RF = 499â¦, and RL = 100â¦, unless otherwise noted (see Figure 1).
2nd HARMONIC DISTORTION
vs FREQUENCY
â50
VO = 2Vp-p
RL = 100â¦
G = +10, RF = 182â¦
â60
G = +5, RF = 365â¦
â70
â80
â90
0.1
G = +2, RF = 499â¦
1
Frequency (MHz)
10 20
3rd HARMONIC DISTORTION
vs FREQUENCY
â50
VO = 2Vp-p
RL = 100â¦
â60
G = +10, RF = 182â¦
G = +5, RF = 365â¦
â70
G = +2, RF = 499â¦
â80
â90
0.1
1
Frequency (MHz)
10 20
2nd HARMONIC DISTORTION
vs FREQUENCY
â50
VO = 2Vp-p
G = +2
â60
RL = 500â¦
RL = 200â¦
â70
RL = 100â¦
â80
â90
0.1
1
Frequency (MHz)
10 20
3rd HARMONIC DISTORTION
vs FREQUENCY
â50
VO = 2Vp-p
G = +2
â60
RL = 200â¦
â70
RL = 100â¦
â80
â90
0.1
RL = 500â¦
1
Frequency (MHz)
10 20
TWO-TONE, 3rd-ORDER SPURIOUS LEVEL
â45
dBc = dB Below Carrier
â50
50MHz
â55
â60
â65
20MHz
â70
â75
10MHz
â80
Load Power at Matched 50⦠Load
â85
â14 â12 â10 â8 â6 â4 â2 0
2
Single-Tone Load Power (dBm)
CLOSED-LOOP OUTPUT IMPEDANCE
10
+5
1/3
1
50⦠OPA3681
ZO
499â¦
499â¦
0.1
â5
0.01
10k
100k
1M
10M
Frequency (Hz)
100M
10
OPA3681
SBOS095A
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