OPA454 Datasheet, PDF (6/36 Pages) Texas Instruments – High-Voltage (100V), High-Current (50mA) OPERATIONAL AMPLIFIERS, G = 1 Stable

OPA454
SBOS391 – DECEMBER 2007
TYPICAL CHARACTERISTICS
At T_P = +25°C, V_S = ±50V, and R_L = 4.8kΩ connected to GND, unless otherwise noted.
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OPEN-LOOP GAIN AND PHASE
vs FREQUENCY
180
160
140
120
100
Phase
80
60
40
20 ^{RLOAD = 4.87kW}
0
C_LOAD = 50pF
V_CM = 0V
-20
0.1 1 10
Gain
100 1k 10k 100k 1M
Frequency (Hz)
Figure 2.
10M
UNITY-GAIN BANDWIDTH
vs TEMPERATURE
3.8
3.6
3.4
3.2
V_CM = 0V
3.0
2.8
2.6
V_CM = -45V
2.4
V_CM = 45V
2.2
C_L = 30pF. 100pF, and 200pF
2.0
-75 -50 -25 0 25 50 75 100 125
Exposed Thermal Pad Temperature (°C)
Figure 4.
OPEN-LOOP GAIN vs PEAK-LOAD CURRENT
140
130
V_S = ±50V
120
110
100
V_S = ±15V
90
V_S = ±4V
80
70
60
0
5
10
15
20
25
Peak I_L (mA)
Figure 6.
PHASE MARGIN vs TEMPERATURE
70
C_L = 30pF
65
V_CM = -45V
V_CM = 0V
V_CM = +45V
60
55
50
C_L = 100pF
45
C_L = 200pF
40
-75 -50 -25 0 25 50 75 100 125
Exposed Thermal Pad Temperature (°C)
Figure 3.
OPEN-LOOP OUTPUT IMPEDANCE
vs FREQUENCY
1M
100k
10k
1k
100
10
1
1
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
Figure 5.
OPEN-LOOP GAIN vs TEMPERATURE
140
130
120
110
100
90
R_LOAD = 48kW
V_OUT = ±49V (dc)
I_OUT = ±1mA
R_L = 4.8kW
80
V_OUT = +48V, -49V (dc)
I_OUT = +9.9mA to -10mA
70
60
R_L = 1.88kW
V_OUT = +47V, -48V (dc)
I_OUT = ±25mA
R_L = 900W
V_OUT = +45V, -47V (dc)
I_OUT = 50mA to -52mA
50
-75 -50 -25 0 25 50 75 100 125
Exposed Thermal Pad Temperature (°C)
Figure 7.
6
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