OPA547_06 Datasheet, PDF (1/18 Pages) Burr-Brown (TI) – High-Voltage, High-Current OPERATIONAL AMPLIFIER

OPA547
OPA547
OPA547
OPA547
SBOS056F – JANUARY 2002 – JULY 2005
High-Voltage, High-Current
OPERATIONAL AMPLIFIER
FEATURES
q WIDE SUPPLY RANGE
Single Supply: +8V to +60V
Dual Supply: ±4V to ±30V
q HIGH OUTPUT CURRENT:
500mA Continuous
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: 6V/µs
q LOW QUIESCENT CURRENT
q PACKAGES:
7-Lead TO-220, Zip and Straight Leads
7-Lead DDPAK Surface-Mount
APPLICATIONS
q VALVE, ACTUATOR DRIVERS
q SYNCHRO, SERVO DRIVERS
q POWER SUPPLIES
q TEST EQUIPMENT
q TRANSDUCER EXCITATION
q AUDIO AMPLIFIERS
V+
DESCRIPTION
The OPA547 is a low-cost, high-voltage/high-current opera-
tional amplifier ideal for driving a wide variety of loads. A
laser-trimmed monolithic integrated circuit provides excellent
low-level signal accuracy and high output voltage and cur-
rent.
The OPA547 operates from either single or dual supplies for
design flexibility. In single-supply operation, the input com-
mon-mode range extends below ground.
The OPA547 is internally protected against over-temperature
conditions and current overloads. In addition, the OPA547
was designed to provide an accurate, user-selected current
limit. Unlike other designs which use a “power” resistor in
series with the output current path, the OPA547 senses the
load indirectly. This allows the current limit to be adjusted
from 0mA to 750mA with a 0 to 150µA control signal. This is
easily done with a resistor/potentiometer or controlled digi-
tally 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 OPA547 is in thermal shutdown.
The OPA547 is available in an industry-standard
7-lead staggered and straight lead 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,
–40°C to +85°C.
V_I^–_N
OPA547
V_O
V_I+N
I_LIM
R_CL (1/4 Watt Resistor)
E/S
V–
R_CL sets the current limit
value from 0 to 750mA.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 2002-2005, Texas Instruments Incorporated