OPA140
OPA2140, OPA4140
SBOS498A –JULY 2010–REVISED AUGUST 2010
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TYPICAL CHARACTERISTICS (continued)
At TA = +25°C, VS = ±18V, RL = 2kΩ connected to midsupply, VCM = VOUT = midsupply, unless otherwise noted.
CMRR AND PSRR vs FREQUENCY (Referred to Input)
COMMON-MODE REJECTION RATIO vs TEMPERATURE
180
CMRR
160
0.12
0.10
0.08
0.06
0.04
0.02
0
140
120
100
-PSRR
80
+PSRR
60
40
20
0
1
10
100
1k
10k 100k
1M
10M 100M
-75
75
-50 -25
0
25
50
100 125 150
Frequency (Hz)
Temperature (°C)
Figure 8.
Figure 9.
0.1Hz to 10Hz NOISE
INPUT VOLTAGE NOISE DENSITY vs FREQUENCY
100
10
1
Time (1s/div)
0.1
1
10
100
1k
10k
100k
Frequency (Hz)
Figure 10.
Figure 11.
THD+N RATIO vs FREQUENCY
THD+N RATIO vs OUTPUT AMPLITUDE
0.01
-80
0.001
-100
BW = 80kHz
1kHz Signal
RL = 2kW
G = -1
VOUT = 3VRMS
G = +1
BW = 80kHz
RL = 2kW
G = -1
0.001
0.0001
-100
-120
-140
0.0001
-120
G = +1
NOTE: Increase at low signal levels is a result
of increased % contribution of noise.
0.00001
0.00001
-140
0.1
1
10
100
10
100
1k
10k 20k
Frequency (Hz)
Frequency (Hz)
Figure 12.
Figure 13.
8
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