OPA145 Datasheet, PDF (13/40 Pages) Texas Instruments – High-Precision, Low-Noise, Rail-to-Rail Output, 5.5-MHz JFET Operational Amplifiers

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OPA145, OPA2145, OPA4145
SBOS427 – JUNE 2017
Typical Characteristics (continued)
at T_A = 25°C, V_S = ±18 V, V_CM = V_S / 2, R_LOAD = 10 kΩ connected to V_S / 2, and C_L = 100 pF (unless otherwise noted)
160
160
0.01
CMRR
140
+PSRR
150
120
±PSRR
140
0.1
100
80
130
60
120
1
40
110
20
0
1
10
100
1k
10k 100k 1M 10M
Frequency (Hz)
C004
100
±75 ±50 ±25
0 25 50 75
Temperature (ƒC)
10
100 125 150
C001
Figure 13. CMRR and PSRR vs Frequency
180
0.001
Figure 14. CMRR vs Temperature
160
0.01
140
0.1
120
1
100
±75 ±50 ±25
0 25 50 75
Temperature (ƒC)
10
100 125 150
C001
Figure 15. PSRR vs Temperature
100
10
Time (1 s/div)
C017
Figure 16. 0.1-Hz to 10-Hz Voltage Noise
0.1
0.01
0.001
G = -1, 2k- Load
G = -1, 600- Load
G = -1, 10k- Load
G = +1, 2k- Load
G = +1, 600- Load
G = +1, 10k- Load
-60
-80
-100
1
0.1
1
10
100
1k
10k 100k
Frequency (Hz)
C002
Figure 17. Input Voltage Noise Spectral Density
vs Frequency
0.0001
-120
0.00001
20
200
2k
Frequency (Hz)
V_OUT = 3.5 V_RMS,
BW = 90 kHz
-140
20k
C004
Figure 18. THD+N Ratio vs Frequency
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