OPA378_1 Datasheet, PDF (5/24 Pages) Texas Instruments – Low-Noise, 900kHz, RRIO, Precision OPERATIONAL AMPLIFIER Zerø-Drift Series

OPA378
OPA2378
www.ti.com ..................................................................................................................................................... SBOS417C – JANUARY 2008 – REVISED JUNE 2009
TYPICAL CHARACTERISTICS
At T_A = +25°C, R_L = 10kΩ, V_S = +5.5V and V_OUT = V_S/2, unless otherwise noted.
0.1Hz TO 10Hz NOISE
INPUT CURRENT AND VOLTAGE NOISE
SPECTRAL DENSITY vs FREQUENCY
1k
Continues with No 1/f (flicker) Noise
Current Noise
100
Voltage Noise
10
Time (1s/div)
Figure 1.
OFFSET VOLTAGE
PRODUCTION DISTRIBUTION
V_S = 5.5V
1
1
10
100
1k
10k
Frequency (Hz)
Figure 2.
OFFSET VOLTAGE DRIFT DISTRIBUTION
V_S = 5.5V
Offset Voltage (mV)
Figure 3.
OFFSET VOLTAGE vs TEMPERATURE
80
60
40
20
0
-20
-40
-60
-80
-75 -50 -25
0 25 50 75
Temperature (°C)
Figure 5.
100 125 150
|Offset Voltage Drift| (mV/°C)
Figure 4.
POWER-SUPPLY REJECTION RATIO
vs FREQUENCY
120
100
+PSRR
80
60
-PSRR
40
20
0
1
10
100
1k
10k
100k
1M
Frequency (Hz)
Figure 6.
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