OMA541SK OMA541SKC
OMA541SD OMA541SDZ
HIGH POWER, HIGH CURRENT
OPERATIONAL AMPLIFIER
8-Pin, TO-3 And DIP, 10 Amp Monolithic Power
Operational Amplifier
FEATURES
• Available In Isolated Standard TO-3, “Copper Slug” TO-3 And
Power DIP Packages
• 10 Amp Peak Output Current
• Power Supplies to ±40V
• Programmable Current Limit
• FET Input
• Available Screened to MIL-STD-883
DESCRIPTION
The OMA541 is a power operational amplifier capable of operation from power
supplies up to ±40V and continuous output current up to 5A. Internal current limit
circuitry can be user-programmed with a single external resistor, protecting the
amplifier and load from fault conditions. The OMA541 pinout is compatible with
popular power operational amplifiers such as the OPA511, OPA512 and OPA3573.
This device is ideally suited for Military motor driver, servo amplifier, synchro
exertation as well as other power drive circuitry. The OMA541SKC incorporates a
copper slug to the header for improved thermal performance.
ABSOLUTE MAXIMUM RATINGS
@ 25°C
Supply Voltage, +V
S
To -V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80V
Output Current, Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A
Power Dissipation, Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125W
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to 125°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to 150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Lead Temperature (10 Sec. Soldering) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
3.4
SCHEMATIC
+V
S
-In
+In
PIN CONNECTION
NC
+V
S
3
2
1
+
Current
Sense
8
Current
Sense
R
CL
Output
Drive
(ext.)
Output
7
6
5
•
1
-V
S
2
3
4
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
-V
S
NC
OUTPUT
CS
+V
S
NC
+IN
-IN
-In
4
+In
5
6
-V
S
-
8
7
NC
R
CL
Output
Output
Drive
Pin 1 Designation
D-8 Top View
4 11 R1
Supersedes 2 05 R0
TO-3 Top View
3.4 - 41
OMA541SK OMA541SKC OMA541SD OMA541SDZ
ELECTRICAL CHARACTERISTICS
(T
C
= 25°C; V
S
= ±34 V
DC
unless otherwise noted.)
Parameter
Input Offset Voltage
V
OS
vs Temperature
vs Temperature
vs Supply Voltage
vs Power
Input Bias Current
I
B
Input Offset Current
I
OS
Input Characteristics
Common-Mode Voltage Range
-55°C to +85°C
+85°C to +125°C
Common-Mode Rejection
V
V
CM
= ±(œ
S
œ-
6V)
V
CM
= ±22V
Input Capacitance*
Input Capacitance, DC*
Gain Characteristics
Open Loop Gain at 10Hz
Gain Bandwidth Product*
Output
Voltage Swing
I
O
= 5A, Continuous
I
O
= 2A
I
O
= 0.5A
Current Peak
AC Performance
Slew Rate
Power Bandwidth*
Setting Time to 0.1%*
Capacitive Load*
R
L
= 8 , V
O
= 20V
rms
2V Step
Specified Temperature Range, G =1
Specified Temperature Range, G >10
Phase Margin*
Power Supply
Power Supply Voltage, ±V
S
Current Quiescent
Specified Temperature Range
Thermal Resistance
q
JC
(Junction-to-Case)
AC Output f 60 Hz
OMA541SK
OMA541SKC
OMA541SD
DC Output
OMA541SK
1.60
1.20
1.00
30
1.9
1.5
1.15
°C/W
°C/W
°C/W
°C/W
1.25
1.00
.85
1.5
1.2
.95
°C/W
°C/W
°C/W
±10
±35
20
25
±40
25
35
V
mA
mA
Specified Temperature Range, R
L
= 8
40
3.3
SOA
Degrees
6
10
55
2
V/µS
KHz
µS
A
±(œ
S
œ-
5.5)
V
±(œ
S
œ-
4.5)
V
±(œ
S
œ-
4)
V
9
±(œ
S
œ-
4.5)
V
±(œ
S
œ-
3.6)
V
±(œ
S
œ-
3.2)
V
10
V
V
V
A
R
L
= 10k
90
97
1.6
dB
MHz
95
5
1
±(œ
S
œ-
6)
V
±(œ
S
œ-
6.5)
V
±(œ
S
œ-
3)
V
±(œ
S
œ-
3.2)
V
113
V
V
dB
dB
pF
T
Specified Temperature Range
4
±1
±5
50
±30
±20
pA
pA
nA
-25°C to +125°C
-55°C to -25°C
V
S
= ±10V to ± V
MAX
±.01
±15
±20
±2.5
±20
±2
±30
±40
±10
±60
mV
µV/°C
µV/°C
µV/V
µV/W
Conditions
Min.
Typ.
Max.
Units
3.4
q
JA
(Junction-to-Ambient)
OMA541SKC
OMA541SD
Note:
*Guaranteed - not tested 100%.
3.4 - 42
OMA541SK OMA541SKC OMA541SD OMA541SDZ
TYPICAL PERFORMANCE CURVES
T
A
= +25°C, V
S
= ±V
DC
unless otherwise noted
Input Bias Current
VS Temperature
100
Input Bias Current, (nA)
10
1
0.1
0.01
110
100
90
80
70
60
50
40
30
20
10
0
-10
1
10
Open-Loop Gain and
Phase VS Frequency
Voltage Gian, (dB)
Phase
Gain
Z
L
= 3.3nF
Z
L
= 3.3nF
100
1k
10k
100k
1M
10M
0.001
-25
0
25
50
75
100
125
Junction Temperature, (C°)
Frequency, (Hz)
Normalized Quiescent Current VS
Total Power Supply Voltage
1.3
1.2
Normalized I
Q
1.1
T
C
= -25°C
1.0
0.9
0.8
0.7
0.6
20
30
40
T
C
= 125°C
50
60
70
80
90
T
C
= 25°C
±
V
S
− V
OUT
,
(V)
6
5
4
Output Voltage Swing
VS Output Current
(+V
S
) - V
O
S
- V
O
-V
3
2
1
0
1
2
3
4
5
I
OUT
, (A)
6
7
8
9
10
+V
S
+
S
,
(V)
-V
Voltage Noise Density
VS Frequency
1k
10
Total Harmonic Distortion
VS Frequency
Voltage Noise Density,
THD + Noise, (%)
1.0
P
O
= 100mW
0.1
P
O
= 5W
P
O
= 50W
100
3.4
0.01
10
1
10
100
1k
10k
100k
0.001
10
100
1k
Frequency, (Hz)
10k
100k
Frequency, (Hz)
3.4 - 43
OMA541SK OMA541SKC OMA541SD OMA541SDZ
Typical Common-Mode Rejection
VS Frequency
(Case Dependent)
120
110
CMRR, (dB)
100
90
80
70
60
50
10
100
1k
10k
Frequency, (Hz)
100k
1M
Output Current, (A)
Typical Output Current
VS Temperature
(Case Dependent)
12
10
8
6
4
2
0
-50
-25
0
25
50
75
100 125
I
OUT
+
I
OUT
-
Case Temperature, (°C)
Copper Slug TO-3
Safe Operating Area
OMA541SKC
10
Standard TO-3
Safe Operating Area
OMA541SK
10
Power DIP
Safe Operating Area
OMA541SD/SDZ
10
T
T
C
=1
T
C
C
25
=8
=
T
°C
5°
25
°
C
C
1.0
T
C
=1
T
C
C
25
=8
=
°C
5°
C
25
°C
1.0
T
C
=1
T
C
T
=8
5°C
C
=
25
25
°C
°C
1.0
0.1
1
10
100
0.1
1
10
100
0.1
1
10
100
MECHANICAL OUTLINE
D-8
.540
D-8Z
1.04
.790
.125
COMMON LEAD
.260
MAX.
.540
.125 DIA.
2 HOLES
.540
.540
.125
.290
.040 R.
MIN.
.900
.100
.300
.100
.300
.150
.030 DIA.
.180 MIN.
3.4
SEATING
PLANE
D
TO-3-8
A
B
C
E
K
H
J
G
Q
F 1
4
8 7 65
23
R
DIM
A
B
C
D
E
F
G
H
J
K
Q
R
INCHES
MIN
MAX
1.510
1.550
.745
.770
.260
.300
.038
.042
.080
.105
40° BASIC
.500 BASIC
1.186 BASIC
.593 BASIC
.400
.500
.151
.161
.980
1.020
MILLIMETERS
MIN
MAX
38.35
39.37
18.92
19.56
6.60
7.62
0.97
1.07
2.03
2.67
40° BASIC
12.7 BASIC
30.12 BASIC
15.06 BASIC
10.16
12.70
3.84
4.09
24.89
25.91
Note: Leads in true position
within 0.010" (0.25mm) R at
MMC at seating plane.
Pin numbers shown for
reference only. Numbers may
not be marked on package.
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