OPA378_1 Datasheet, PDF (6/24 Pages) Texas Instruments – Low-Noise, 900kHz, RRIO, Precision OPERATIONAL AMPLIFIER Zerø-Drift Series

OPA378
OPA2378
SBOS417C – JANUARY 2008 – REVISED JUNE 2009 ..................................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, R_L = 10kΩ, V_S = +5.5V and V_OUT = V_S/2, unless otherwise noted.
140
120
100
80
60
40
20
0
-20
0.1
120
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.
COMMON-MODE REJECTION RATIO
vs FREQUENCY
150
145
140
135
130
125
120
115
110
105
100
-75
OPEN-LOOP GAIN
vs TEMPERATURE
R_L = 100kW
R_L = 5kW
-50 -25
0 25 50 75
Temperature (°C)
Figure 8.
R_L = 10kW
100 125 150
COMMON-MODE REJECTION RATIO AND
POWER-SUPPLY REJECTION RATIO vs TEMPERATURE
140
100
130
V_SCM= R5.R5V
80
120
V_S = 5.5V
PSRR
60
110
40
100
CMRR
V_S = 2.2V
20
90
0
10
100
1k
10k
100k
1M
Frequency (Hz)
Figure 9.
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
400
300
-I_B
200
100
0
-100
-200
+I_B
-300
-400
-0.5 0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Input Common-Mode Voltage (V)
Figure 11.
80
-75 -50 -25
0 25 50 75
Temperature (°C)
Figure 10.
100 125 150
INPUT BIAS CURRENT
vs TEMPERATURE
2000
1500
1000
500
0
-500
-1000
-1500
-2000
-75 -50 -25
0 25 50 75
Temperature (°C)
Figure 12.
100 125 150
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