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OPA548F Datasheet

  • OPA548F

  • High-Voltage, High-Current OPERATIONAL AMPLIFIER

  • 16頁(yè)

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廬
OPA
548
OPA
OPA548
548
www.burr-brown.com/databook/OPA548.html
High-Voltage, High-Current
OPERATIONAL AMPLIFIER
FEATURES
q
WIDE SUPPLY RANGE
Single Supply: +8V to +60V
Dual Supply:
鹵
4V to
鹵
30V
q
HIGH OUTPUT CURRENT:
3A Continuous
5A Peak
q
WIDE OUTPUT VOLTAGE SWING
q
FULLY PROTECTED:
Thermal Shutdown
Adjustable Current Limit
q
OUTPUT DISABLE CONTROL
q
THERMAL SHUTDOWN INDICATOR
q
HIGH SLEW RATE: 10V/碌s
q
LOW QUIESCENT CURRENT
q
PACKAGES:
7-Lead TO-220
7-Lead DDPAK Surface-Mount
DESCRIPTION
The OPA548 is a low cost, high-voltage/high-current
operational amplifier ideal for driving a wide variety
of loads. A laser-trimmed monolithic integrated cir-
cuit provides excellent low-level signal accuracy and
high output voltage and current.
The OPA548 operates from either single or dual sup-
plies for design flexibility. In single supply operation,
the input common-mode range extends below ground.
The OPA548 is internally protected against over-
temperature conditions and current overloads. In addi-
tion, the OPA548 was designed to provide an accurate,
user-selected current limit. Unlike other designs which
use a 鈥減ower鈥?resistor in series with the output current
path, the OPA548 senses the load indirectly. This
allows the current limit to be adjusted from 0 to 5A
with a resistor/potentiometer or controlled digitally
with a voltage-out or current-out DAC.
The Enable/Status (E/S) pin provides two functions.
An input on the pin not only disables the output stage
to effectively disconnect the load but also reduces the
quiescent current to conserve power. The E/S pin
output can be monitored to determine if the OPA548
is in thermal shutdown.
The OPA548 is available in an industry-standard
7-lead staggered TO-220 package and a 7-lead DDPAK
surface-mount plastic power package. The copper tab
allows easy mounting to a heat sink or circuit board
for excellent thermal performance. It is specified for
operation over the extended industrial temperature
range, 鈥?0擄C to +85擄C. A SPICE macromodel is
available for design analysis.
APPLICATIONS
q
VALVE, ACTUATOR DRIVER
q
SYNCHRO, SERVO DRIVER
q
POWER SUPPLIES
q
TEST EQUIPMENT
q
TRANSDUCER EXCITATION
q
AUDIO AMPLIFIER
V+
鈥?/div>
V
IN
OPA548
+
V
IN
V
O
I
LIM
R
CL
(1/4W Resistor)
R
CL
sets the current limit
value from 0 to 5A.
E/S
V鈥?/div>
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111 鈥?Twx: 910-952-1111
Internet: http://www.burr-brown.com/ 鈥?FAXLine: (800) 548-6133 (US/Canada Only) 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132
廬
漏
1997 Burr-Brown Corporation
PDS-1389B
1
Printed in U.S.A. October, 1997
OPA548

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