TYPICAL PERFORMANCE CURVES: V
S
= +5V
G = +2, R
F
= 499Ω, R
L
= 100Ω to +2.5V, unless otherwise noted (see Figure 2).
(CONT)
2ND HARMONIC DISTORTION vs FREQUENCY
–40
–40
G = +10, R
F
= 200Ω
V
O
= 2Vp-p
R
L
= 100Ω to 2.5V
–50
G = +5, R
F
= 360Ω
–60
3RD HARMONIC DISTORTION vs FREQUENCY
V
O
= 2Vp-p
R
L
= 100Ω to 2.5V
–50
G = +10, R
F
= 200Ω
–60
G = +5, R
F
= 360Ω
2nd Harmonic Distortion (dBc)
–70
G = +2, R
F
= 499Ω
3rd Harmonic Distortion (dBc)
–70
G = +2, R
F
= 499Ω
–80
0.1
1
Frequency (MHz)
10
20
–80
0.1
1
Frequency (MHz)
10
20
2ND HARMONIC DISTORTION vs FREQUENCY
–50
3RD HARMONIC DISTORTION vs FREQUENCY
–50
V
O
= 2Vp-p
G = +2
–60
R
L
= 100Ω
–70
R
L
= 200Ω
2nd Harmonic Distortion (dBc)
R
L
= 100Ω
R
L
= 200Ω
–60
–70
–80
Loads to 2.5V
–90
0.1
1
Frequency (MHz)
R
L
= 500Ω
3rd Harmonic Distortion (dBc)
V
O
= 2Vp-p
G = +2
–80
R
L
= 500Ω
Loads to 2.5V
–90
10
20
0.1
1
Frequency (MHz)
10
20
TWO-TONE, 3RD ORDER SPURIOUS LEVEL
–45
dBc = dB Below Carrier
–50
3rd Order Spurious (dBc)
CLOSED-LOOP OUTPUT IMPEDANCE
10
+5
50MHz
Output Impedance (Ω)
50Ω
1/2
OPA2681
–55
–60
–65
20MHz
–70
–75
–80
Load Power at Matched 50Ω Load
–85
–14
–12
–10
–8
–6
–4
–2
0
2
Single-Tone Load Power (dBm)
10MHz
1
Z
O
402Ω
402Ω
0.1
–5
0.01
10k
100k
1M
Frequency (Hz)
10M
100M
®
OPA2681
10
BURR-BROWN [ BURR-BROWN CORPORATION ]
