OPA681N BURR-BROWN [Burr-Brown Corporation], OPA681N Datasheet - Page 7

• Manufacturer Part Number: OPA681N
• Description: Wideband, Current Feedback OPERATIONAL AMPLIFIER With Disable
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

TYPICAL PERFORMANCE CURVES: V
G = +2, R
–40
–50
–60
–70
–80
–90
100
60
50
40
30
20
10
10
0
1
100
F
0.1
1
= 402 , and R
V
R
O
L
INPUT VOLTAGE AND CURRENT NOISE DENSITY
2ND HARMONIC DISTORTION vs FREQUENCY
= 100
= 2Vp-p
RECOMMENDED R
Non-Inverting Input Current Noise
1k
Voltage Noise
L
Inverting Input Current Noise
= 100 , unless otherwise noted (see Figure 1).
Capacitive Load (pF)
Frequency (MHz)
10k
Frequency (Hz)
G = +5, R
1
S
10
vs CAPACITIVE LOAD
F
100k
= 261
G = +10, R
2.2nV/ Hz
G = +2, R
12.2pA/ Hz
1M
15.1pA/ Hz
F
= 180
F
10
= 402
100
10M
20
7
–40
–50
–60
–70
–80
–90
–40
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90
–12
–15
15
12
–3
–6
–9
S
9
6
3
0
0.1
–8
0
V
= 5V
IN
dBc = dB below carriers
V
R
O
L
FREQUENCY RESPONSE vs CAPACITIVE LOAD
3RD HARMONIC DISTORTION vs FREQUENCY
= 100
–6
402
= 2Vp-p
OPA681
402
–4
INTERMODULATION SPURIOUS
1k
C
Single-Tone Load Power (dBm)
L
R
TWO-TONE, 3RD-ORDER
(CONT)
is optional.
= 47pF
S
Frequency (30MHz/div)
–2
Frequency (MHz)
C
L
Load Power at Matched 50 Load
1
150MHz
0
1k
C
10MHz
G = +5, R
V
OPA681
L
O
20MHz
50MHz
= 10pF
C
2
L
= 100pF
G = +10, R
F
4
= 261
R
6
G = +2,
F
= 402
F
C
= 180
L
10
= 22pF
8
300MHz
20
10
®