OPA376-Q1 Datasheet, PDF (6/19 Pages) Texas Instruments – Low-Noise, Low Quiescent Current, Precision Operational Amplifier e-trim™ Series

OPA376-Q1
OPA2376-Q1, OPA4376-Q1
SBOS549 – APRIL 2011
www.ti.com
TYPICAL CHARACTERISTICS
At T_A = +25°C, V_S = +5V, R_L = 10kΩ connected to V_S/2, V_CM = V_S/2, and V_{O UT} = V_S/2, unless otherwise noted.
OPEN-LOOP GAIN/PHASE vs FREQUENCY
160
0
140
-20
120
-40
Gain
100
-60
Phase
80
-80
60
-100
POWER-SUPPLY AND COMMON-MODE
REJECTION RATIO vs FREQUENCY
120
V(+) Power-Supply Rejection Ratio
100
80
Common-Mode
Rejection Ratio
60
40
-120
40
V(-) Power-Supply Rejection Ratio
20
-140
20
0
-160
-20
0.1 1
-180
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
0
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
Figure 1.
Figure 2.
OPEN-LOOP GAIN AND POWER-SUPPLY
REJECTION RATIO vs TEMPERATURE
160
Open-Loop Gain (R_L = 2kW)
140
0.1Hz to 10Hz
INPUT VOLTAGE NOISE
120
Power-Supply Rejection Ratio
(V_S = 2.1V to 5.5V)
100
80
-50 -25 0
25 50 75
Temperature (°C)
100 125 150
Figure 3.
INPUT VOLTAGE NOISE SPECTRAL DENSITY
100
1s/div
Figure 4.
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
1
V_S = 5V, V_CM = 2V, V_OUT = 1V_RMS
0.1
10
1
1
10
100
1k
10k
100k
Frequency (Hz)
Figure 5.
0.01
0.001
0.0001
10
Gain = 10V/V
Gain = 1V/V
100
1k
10k
Frequency (Hz)
Figure 6.
100k
6
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