Datasheet

Frequency (MHz)
201510 25 30 35 40
45
50
5
402W
402W
OPA842
50W
50W
50W
P
I
P
O
50
45
40
35
30
25
20
Intercept Point (+dBm)
Frequency (Hz)
Current Noise
Voltage Noise
2.7pA/ HzÖ
2.6nV/ HzÖ
100
10
1
Voltage Noise (nV )
Current Noise (pA/ )
/ Hz
Hz
Ö
Ö
10
3
10
4
10
5
10
6
10
7
10
2
Capacitive Load (pF)
1 10 100 1k
100
10
1
R ( )W
S
Frequency (MHz)
10 100 500
C = 10pF
C = 22pF
C = 47pF
C = 100pF
R
S
50W
1kW
V
I
V
O
C
L
402W
402W
OPA842
3
0
3
6
9
12
15
18
-
-
-
-
-
-
Normalized Gain to Capacitive Load (dB)
200
100
0
100
200
-
-
Output Voltage (100mV/div)
1.2
0.8
0.4
0
0.4
0.8
1.2
-
-
-
Output Voltage (400mV/div)
Time (2ns/div)
Right Scale
Large Signal 1V
Small Signal
Left Scale
Frequency (MHz)
0 25 50 20075 100 125 150 175
0.2
0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
-
-
-
-
-
-
Gain (dB)
V = 0.1V
R = 25
R = 100
O PP
F
L
W
W
OPA842
www.ti.com SBOS267D –NOVEMBER 2002–REVISED SEPTEMBER 2010
TYPICAL CHARACTERISTICS: V
S
= ±5V (continued)
At T
A
= +25°C, G = +2, R
F
= 402Ω, and R
L
= 100Ω, unless otherwise noted.
TWO−TONE, THIRD−ORDER
INPUT VOLTAGE AND CURRENT NOISE INTERMODULATION INTERCEPT
Figure 13. Figure 14.
RECOMMENDED R
S
vs CAPACITIVE LOAD FREQUENCY RESPONSE vs CAPACITIVE LOAD
Figure 15. Figure 16.
GAIN = +1 FLATNESS PULSE RESPONSE G = +1
Figure 17. Figure 18.
Copyright © 2002–2010, Texas Instruments Incorporated 7
Product Folder Link(s): OPA842