OPA378_15 Datasheet, PDF (6/29 Pages) Texas Instruments – Low-Noise, 900kHz, RRIO,Precision OPERATIONAL AMPLIFIER Zerø-Drift Series

OPA378
OPA2378
SBOS417D – JANUARY 2008 – REVISED OCTOBER 2009
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TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, R_L = 10kΩ, V_S = +5.5V and V_OUT = V_S/2, unless otherwise noted.
OFFSET VOLTAGE vs TEMPERATURE
80
POWER-SUPPLY REJECTION RATIO
vs FREQUENCY
120
60
100
40
+PSRR
20
80
0
60
-PSRR
-20
40
-40
20
-60
-80
-75 -50 -25
0 25 50 75
Temperature (°C)
Figure 5.
100 125 150
0
1
10
100
1k
10k
100k
1M
Frequency (Hz)
Figure 6.
140
120
100
80
60
40
20
0
-20
0.1
OPEN-LOOP GAIN AND PHASE
vs FREQUENCY
140
120
Phase
100
80
60
40
Gain
20
0
-20
1 10 100 1k 10k 100k 1M 10M
Frequency (Hz)
Figure 7.
OPEN-LOOP GAIN
vs TEMPERATURE
150
145
140
R_L = 100kW
135
130
R_L = 5kW
125
120
115
110
105
100
-75 -50 -25
0 25 50 75
Temperature (°C)
Figure 8.
R_L = 10kW
100 125 150
COMMON-MODE REJECTION RATIO
vs FREQUENCY
120
100
80
60
40
20
0
10
100
1k
10k
100k
1M
Frequency (Hz)
Figure 9.
COMMON-MODE REJECTION RATIO AND
POWER-SUPPLY REJECTION RATIO vs TEMPERATURE
140
130
V_SCM= R5.R5V
V_S = 5.5V
120
PSRR
110
100
CMRR
V_S = 2.2V
90
80
-75 -50 -25
0 25 50 75 100 125 150
Temperature (°C)
Figure 10.
6
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