OPA454 Datasheet, PDF (10/36 Pages) Texas Instruments – High-Voltage (100V), High-Current (50mA) OPERATIONAL AMPLIFIERS, G = 1 Stable

OPA454
SBOS391 – DECEMBER 2007
TYPICAL CHARACTERISTICS (continued)
At T_P = +25°C, V_S = ±50V, and R_L = 4.8kΩ connected to GND, unless otherwise noted.
www.ti.com
MAXIMUM POWER DISSIPATION
vs TEMPERATURE WITH MINIMUM ATTACH AREA
2.0
SO-8 PowerPAD:
T_J(max) = +125°C
1.5
1.0
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)
Figure 26.
INPUT VOLTAGE NOISE SPECTRAL DENSITY
1000
SLEW RATE vs TEMPERATURE
16
15
14
13
12
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 27.
0.01Hz TO 10Hz INPUT VOLTAGE NOISE
100
10
1
10
100
1k
10k
100k
Frequency (Hz)
Figure 28.
0.040
0.035
TOTAL HARMONIC DISTORTION + NOISE
vs TEMPERATURE
G = +10
R_I = 4.75kW
V_PP = 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)
Figure 30.
100k
20s/div
Figure 29.
0.0030
0.0025
0.0020
TOTAL HARMONIC DISTORTION + NOISE
vs TEMPERATURE
G = +1
R_I = 4.75kW
V_PP = 38.6V
V_S = +41.6, -40.6
0.0015
0.0010
V_S = +40.6,
-39.6
0.0005
0
10
100
1k
10k
100k
Frequency (Hz)
Figure 31.
10
Submit Documentation Feedback
Product Folder Link(s): OPA454
Copyright © 2007, Texas Instruments Incorporated