OPA454_16 Datasheet, PDF (11/47 Pages) Texas Instruments – High-Voltage (100-V), High-Current (50-mA) Operational Amplifiers

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OPA454
SBOS391B – DECEMBER 2007 – REVISED MARCH 2016
Typical Characteristics (continued)
At T_P = 25°C, V_S = ±50 V, and R_L = 4.8 kΩ connected to GND, unless otherwise noted.
2.0
16
SO-8 PowerPAD:
T_J(max) = +125°C
15
1.5
14
13
1.0
12
T_J (+125°C max) = T_A + [(|V_S| - |V_O|) I_O ´ q_JA]
0.5 ^{qJA = +52°C/W, SO-8 PowerPAD}
(1in ´ 0.5in [25.4mm x 12.7mm]
Heat-Spreader, 1oz Copper)
T_J = +25°C + (1.93W ´ 52°C/W) = +125°C
0
-50 -25
0
25
50
75 100 125
Exposed Thermal Pad Temperature (°C)
11
10 ^{G = +1}
V_S = ±45V
9 ^VIN ^{= 80V Step}
R_LOAD = 4.8kW
8
-75 -50 -25 0
25 50 75 100 125
Exposed Thermal Pad Temperature (°C)
Figure 25. Maximum Power Dissipation vs
Temperature With Minimum Attach Area
1000
Figure 26. Slew Rate vs Temperature
100
10
1
10
100
1k
10k
100k
Frequency (Hz)
Figure 27. Input Voltage Noise Spectral Density
0.040
0.035
G = +10
R_I = 4.75kW
V_PK = 38.6V
0.030
0.025
0.020
0.015
V_S = -49, +50
V_S = -55, +55
0.010
10
100
1k
10k
Frequency (Hz)
100k
Figure 29. Total Harmonic Distortion + Noise vs Frequency
20s/div
Figure 28. 0.01-Hz to 10-Hz Input Voltage Noise
0.0030
0.0025
G = +1
R_I = 4.75kW
V_PK = 38.6V
V_S = +41.6, -40.6
0.0020
0.0015
0.0010
V_S = +40.6,
-39.6
0.0005
0
10
100
1k
10k
100k
Frequency (Hz)
Figure 30. Total Harmonic Distortion + Noise vs Frequency
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