OPA378 Datasheet, PDF (7/14 Pages) Texas Instruments – Low Noise, 900kHz, 50mV, Rail-to-Rail Input/Output Precision OPERATIONAL AMPLIFIER Zerø-Drift Series

OPA378
OPA2378
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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.
SBOS417 – JANUARY 2008
COMMON-MODE REJECTION RATIO AND PSRR
vs TEMPERATURE
120
PSRR
115
110
V_S = 5.5V
105
CMRR
100
V_S = 1.8V
95
90
85
80
-50 -25 0 25 50 75 100 125 150
Temperature (°C)
Figure 13.
80
70
60
50
40
30
20
10
0
1
SMALL-SIGNAL OVERSHOOT
vs LOAD CAPACITANCE
Gain = -1V/V
RFB = 100kW
Gain = +1V/V
10
100
Load Capacitor (pF)
Figure 15.
Gain = -1V/V
RFB = 5kW
1k 10k
POSITIVE OVER-VOLTAGE RECOVERY
Output
10kW
0
+2.5V
1kW
OPA378
2.5V
OPEN-LOOP GAIN
vs TEMPERATURE
140
135
R_L = 100kW
R_L = 10kW
130
R_L = 5kW
125
120
-50 -25 0 25 50 75 100 125 150
Temperature (°C)
Figure 14.
SMALL-SCALE STEP RESPONSE
G = +1
R_L = 10kW
Time (4ms/div)
Figure 16.
NEGATIVE OVER VOLTAGE RECOVERY
10kW
+2.5V
1kW
OPA378
Output
2.5V
0
Input
Input
Time (10ms/div)
Figure 17.
Time (4ms/div)
Figure 18.
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