Datasheet
OPA2822
7
SBOS188E
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±6V (Cont.)
T
A
= +25°C, G
= +2, R
F
= 402Ω, and R
L
= 100Ω, unless otherwise noted.
INPUT VOLTAGE AND CURRENT NOISE DENSITY
Frequency (Hz)
10
2
10
4
10
5
10
6
10
3
10
7
Voltage Noise nV/√Hz
Current Noise pA/√Hz
10
1
2nV/√Hz
1.6pA/√Hz
Voltage Noise
Current Noise
2-TONE, 3rd-ORDER
INTERMODULATION INTERCEPT
Frequency (MHz)
11020
Intercept Point (+dBm)
60
55
50
45
40
35
30
25
20
1/2
OPA2822
50Ω
50Ω
P
I
50Ω
402Ω
402Ω
P
O
CHANNEL-TO-CHANNEL CROSSTALK
Frequency (MHz)
0.1 100101 500
Cross-Talk Input Referred (dB)
–40
–50
–60
–70
–80
–90
–100
Input Referred
R
L
= 100Ω
G = +2
GAIN FLATNESS
Frequency (MHz)
0 15010050 200
Deviation from 6dB Gain (0.1dB/div)
0.50
0.40
0.30
0.20
0.10
0.00
–0.10
–0.20
–0.30
–0.40
–0.50
NG = 3.5
R
NG
= 301Ω
NG = 3.0
R
NG
= 452Ω
NG = 2.5
R
NG
= 904Ω
G = 2
Noise Gain
Adjusted
See Figure 12
NG = 2
R
NG
= ∞
RECOMMENDED R
S
vs CAPACITIVE LOAD
Capacitive Load (pF)
10 100 1k
R
S
(Ω)
1000
100
10
1
For Maximally Flat Response,
See Figure 12
FREQUENCY RESPONSE vs CAPACITIVE LOAD
Frequency (MHz)
1 10 100 500
Normalized Gain to Capacitive Load (dB)
9
6
3
0
–3
–6
–9
–12
1/2
OPA2822
R
S
V
I
1kΩ
1kΩ is optional.
C
L
402Ω
402Ω
V
O
C
L
= 100pF
C
L
= 10pF
C
L
= 22pF
C
L
= 47pF