®
OPA501
High Current, High Power
OPERATIONAL AMPLIFIER
FEATURES
q
HIGH OUTPUT CURRENT:
±
10A Peak
q
WIDE POWER SUPPLY RANGE:
±
10 to
±
40V
q
LOW QUIESCENT CURRENT: 2.6mA
q
ISOLATED CASE TO-3 PACKAGE
APPLICATIONS
q
MOTOR DRIVER
q
q
q
q
SERVO AMPLIFIER
VALVE ACTUATOR
SYNCRO DRIVER
PROGRAMMABLE POWER SUPPLY
DESCRIPTION
The OPA501 is a high output current operational
amplifier. It can be used in virtually all common op
amp circuits, yet is capable of output currents up to
±10A.
Power supply voltages up to
±40V
allow very
high output power for driving motors or other electro-
mechanical loads.
Safe operating area is fully specified, and user-set
current limits provide protection for both the amplifier
and load. The class-B (zero output stage bias) provides
low quiescent current during small-signal conditions.
This rugged hybrid integrated circuit is packaged in a
metal 8-pin TO-3 package. Both industrial and mili-
tary temperature range models are available.
V+
3
2
+Output
Drive
+
R
CL
5
4
1
Current
Sense
8
–Output
Drive
Output
R
CL
–
6
V–
International Airport Industrial Park • Mailing Address: PO Box 11400
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP •
• Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1983 Burr-Brown Corporation
PDS-490F
Printed in U.S.A. August, 1993
SPECIFICATIONS
ELECTRICAL
At T
C
= +25°C, V
S
=
±28V,
(OPA501RM, AM); V
S
=
±34V
(OPA501SM, BM) unless otherwise noted.
OPA501RM, AM
PARAMETER
RATED
Output Current
Continuous
(3)
Output Voltage
(3)
OUTPUT
(1, 2)
R
L
= 2Ω (RM, AM)
R
L
= 2.6Ω (SM, BM)
I
O
= 10A peak
Small Signal
V
O
= 40Vp-p, R
L
= 8Ω
R
L
= 5Ω (RM, AM)
R
L
= 6.5Ω (SM, BM)
±10
±10
±20
*
*
±26
A
A
V
MHz
kHz
V/µs
v/µs
±5
±40
mV
µV/°C
µV/°C
µV/V
nA
nA/°C
nA/V
nA
nA/°C
nA/°C
dB
dB
MΩ
MΩ
µVp-p
pAp-p
pArms
*
*
±34
*
*
*
*
*
*
*
V
dB
V
V
mA
°C
°C
°C
°C
°C/W
CONDITIONS
MIN
TYP
MAX
MIN
OPA501SM, BM
TYP
MAX
UNITS
±23
1
16
±29
*
*
DYNAMIC RESPONSE
Bandwidth, Unity Gain
Full Power Bandwidth
Slew Rate
INPUT OFFSET VOLTAGE
Initial Offset
vs Temperature
vs Supply Voltage
INPUT BIAS CURRENT
Initial
vs Temperature
vs Supply Voltage
INPUT DIFFERENCE CURRENT
Initial
vs Temperature
OPEN-LOOP GAIN, DC
R
L
= 6.5Ω (SM, BM)
INPUT IMPEDANCE
Differential
Common-mode
INPUT NOISE
Voltage Noise
f
n
= 10Hz to 10kHz
Current Noise
f
n
= 10Hz to 10kHz
INPUT VOLTAGE RANGE
Common-mode Voltage
(4)
Common-mode Rejection
POWER SUPPLY
Rated Voltage
Operating Voltage Range
Current, quiescent
TEMPERATURE RANGE
Specification, RM, SM
AM, BM
Operating, derated
performance, AM, BM
Storage
THERMAL RESISTANCE
*Specification same as for OPA501RM, AM.
10
1.35
1.35
*
*
*
±10
±65
–25°C < T < +85°C (AM, BM)
–55°C < T < +125°C (RM, SM)
±5
±10
±35
±2
±10
*
*
*
*
±2
±0.01
98
115
*
*
*
*
T
CASE
= +25°C
15
±0.05
±0.02
±5
±0.01
94
115
40
20
T
CASE
= +25°C
–25°C < T < +85°C (AM, BM)
–55°C < T < +125°C (RM, SM)
R
L
= 5Ω (RM, AM)
±10
±3
10
250
f
n
= 0.3Hz to 10Hz
5
f
n
= 0.3Hz to 10Hz
4.5
Linear Operation
f = DC, V
CM
=
±(|V
S
|–6)
±(|V
S
|–6)
70
±(|V
S
|–3)
110
±28
±2.6
20
*
*
80
3
µVrms
*
±10
case
–55
–25
–55
–65
Steady State
θ
JC
±36
±10
+125
+85
+125
+150
±40
*
*
*
*
*
*
2.0
2.2
NOTES: (1) Package must be derated based on a junction-to-case thermal resistance of 2.2°C/W or a junction-to-ambient thermal resistance of 30°C/W. (2) Safe
Operating Area and Power Derating Curves must be observed. (3) With
±R
SC
= 0. Peak output current is typically greater than 10A if duty cycle and pulse width limitations
are observed. Output current greater than 10A is not guaranteed. (4) The absolute maximum voltage is 3V less than supply voltage.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
OPA501
2
ABSOLUTE MAXIMUM RATINGS
Power Supply Voltage (V
S
) ................................................................
±40V
Power Dissipation at +25°C
(1, 2)
.......................................................... 79W
Differential Input Voltage ...............................................................
±V
S
–3V
Common-Mode Input Voltage ..............................................................
±V
S
Operating Temperature Range ....................................... –55°C to +125°C
Storage Temperature Range .......................................... –65°C to +150°C
Lead Temperature (soldering, 10s) ................................................ +300°C
Junction Temperature .................................................................... +200°C
Output Short-Circuit Duration
(3)
................................................ Continuous
NOTES: (1) At case temperature of +25°C. Derate at 2.2°C/W above case
temperature of +25°C. (2) Average dissipation. (3) Within safe operating
area and with appropriate derating.
CONNECTION DIAGRAM
Top View
R
SC
+Output
Drive
+
V+
3
+In
4
2
1
Current
Sense
V
O
–In
5
8
6
V–
7
NC
–Output
Drive
R
SC
–
ORDERING INFORMATION
MODEL
OPA501AM
OPA501BM
OPA501RM
OPA501SM
PACKAGE
8-Pin
8-Pin
8-Pin
8-Pin
Metal
Metal
Metal
Metal
TO-3
TO-3
TO-3
TO-3
TEMPERATURE
RANGE
–25°C to +85°C
–25°C to +85°C
–55°C to +125°C
–55°C to +125°C
PACKAGE INFORMATION
MODEL
OPA501AM
OPA501BM
OPA501RM
OPA501SM
PACKAGE
8-Pin Metal TO-3
8-Pin Metal TO-3
8-Pin Metal TO-3
8-Pin Metal TO-3
PACKAGE DRAWING
NUMBER
(1)
030
030
030
030
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.
®
3
OPA501
TYPICAL PERFORMANCE CURVES
Typical at +25°C case and
±V
S
= 28VDC, unless otherwise noted.
OPEN-LOOP FREQUENCY RESPONSE
120
100
0
–30
Phase
120
COMMON MODE REJECTION vs FREQUENCY
Common-Mode Rejection (dB)
100
80
60
40
20
0
1
10
100
1k
Frequency (Hz)
10k
100k
1M
60
40
20
0
–20
1
10
100
1k
10k
100k
1M
Frequency (Hz)
Amplitude
–90
–120
–150
–180
–210
10M
Phase (degree)
Amplitude (dB)
80
–60
INPUT BIAS CURRENT vs TEMPERATURE
2.8
±40
OUTPUT VOLTAGE SWING
vs POWER SUPPLY VOLTAGE
A
V
= 10
Input Bias Current (Normalized)
2.4
2.0
1.6
1.2
0.8
0.4
0
–50
±35
Output Voltage (Vpk)
±30
±25
±20
±15
±10
I
O
= 1A
I
O
= 5A
I
O
= 10A
–25
0
25
50
75
100
125
±10
±15
±20
±25
±30
±35
±40
Case Temperature (°C)
Power Supply Voltage, V
S
(V)
FULL POWER RESPONSE
100
60
+V
S
= ±34V
1.8
HARMONIC DISTORTION vs FREQUENCY
Total Harmonic Distortion (%)
Output Voltage Swing (Vp-p)
40
20
10
6
4
2
+V
S
= ±28V
Maximum “Undistorted”
Sine Wave Output
Maximum
Output
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
O
= 40Vp-p
A
V
= +10
V
S
= ±28V
R
L
= 4
Ω
R
L
= 8
Ω
R
L
= 16Ω
R
L
= 50Ω
R
L
= 8
Ω
A
V
= +10
T
C
= +25°C
1
2
4
6
10
20
40
60
100
10
10
2
Frequency (kHz)
10
3
10
4
Frequency (kHz)
®
OPA501
4
TYPICAL PERFORMANCE CURVES
(CONT)
Typical at +25°C case and
±V
S
= 28VDC, unless otherwise noted.
POWER DERATING CURVE
120
CURRENT LIMIT RESISTOR vs LIMIT CURRENT
0.28
Internal Power Dissipation, P
D
(W)
Current Limit Resistor, R
SC
(Ω)
100
80
0.24
T
C
= +25°C
0.20
0.16
0.12
0.08
0.04
0
θ
JC
= 2.2°C/W
60
40
20
0
0
25
50
75
100
125
150
Case Temperature (°C)
0
2
4
6
8
10
12
14
Limit Current (A)
CURRENT LIMIT vs TEMPERATURE
±7
±6
Short Circuit Current (A)
NORMALIZED THERMAL RESISTANCE
vs FREQUENCY
1.2
1.0
R
SC
= 0.12Ω
Normalized (
θ
JC
)
±5
±4
±3
±2
±1
0
–50
0.8
0.6
0.4
0.2
0
R
SC
= 0.28Ω
–25
0
25
50
75
100
125
0.1
1
10
100
1k
10k
Case Temperature (°C)
Frequency (Hz)
PULSE RESPONSE, A
V
= +1
PULSE RESPONSE, A
V
= +1
Input/Output Voltage (5V/div)
Time (10µs/div)
Input/Output Voltage (5V/div)
Time (100µs/div)
®
5
OPA501
