OPA549 (ACTIVE)

High-Voltage, High-Current Op Amp, Excellent Output Swing

Recommended alternative parts

  • OPA541  -  80V supply with 5A continuous output instead of 60V, 9A.
  • OPA548  -  Continuous output of 3A instead of 9A.
  • OPA445  -  OPA445, OPA452, OPA453, OPA551, and OPA552 are high voltage op amps
  • OPA547  -  Continuous output of 500mA instead of 9A.
  • OPA452  -  OPA445, OPA452, OPA453, OPA551, and OPA552 are high voltage op amps
  • OPA544  -  70V supply with 2A continuous output current instead of 60V, 9A.
  • OPA453  -  OPA445, OPA452, OPA453, OPA551, and OPA552 are high voltage op amps
  • OPA551  -  OPA445, OPA452, OPA453, OPA551, and OPA552 are high voltage op amps
  • OPA552  -  OPA445, OPA452, OPA453, OPA551, and OPA552 are high voltage op amps
  • OPA561  -  The OPA541 and the OPA561 are also high current op amps

Description

The OPA549 is a low-cost, high-voltage/high-current operational amplifier ideal for driving a wide variety of loads. This laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and high output voltage and current.

The OPA549 operates from either single or dual supplies for design flexibility. The input common-mode range extends below the negative supply.

The OPA549 is internally protected against over-temperature conditions and current overloads. In addition, the OPA549 provides an accurate, user-selected current limit. Unlike other designs which use a "power" resistor in series with the output current path, the OPA549 senses the load indirectly. This allows the current limit to be adjusted from 0A to 10A with a resistor/potentiometer, or controlled digitally with a voltage-out or current-out Digital-to-Analog Converter (DAC).

The Enable/Status (E/S) pin provides two functions. It can be monitored to determine if the device is in thermal shutdown, and it can be forced low to disable the output stage and effectively disconnect the load.

The OPA549 is available in an 11-lead power package. Its copper tab allows easy mounting to a heat sink for excellent thermal performance. Operation is specified over the extended industrial temperature range, –40°C to +85°C.

Features

  • HIGH OUTPUT CURRENT:
       8A Continuous
       10A Peak
  • WIDE POWER-SUPPLY RANGE:
       Single Supply: +8V to +60V
       Dual Supply: ±4V to ±30V
  • WIDE OUTPUT VOLTAGE SWING
  • FULLY PROTECTED:
       Thermal Shutdown
       Adjustable Current Limit
  • OUTPUT DISABLE CONTROL
  • THERMAL SHUTDOWN INDICATOR
  • HIGH SLEW RATE: 9V/µs
  • CONTROL REFERENCE PIN
  • 11-LEAD POWER PACKAGE
  • APPLICATIONS
    • VALVE, ACTUATOR DRIVER
    • SYNCHRO, SERVO DRIVER
    • POWER SUPPLIES
    • TEST EQUIPMENT
    • TRANSDUCER EXCITATION
    • AUDIO POWER AMPLIFIER

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Parametrics Compare all products in Precision Amplifier

 
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
Iq per channel (Max) (mA)
Slew Rate (Typ) (V/us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Offset Drift (Typ) (uV/C)
CMRR (Min) (dB)
GBW (Typ) (MHz)
IIB (Max) (pA)
Vn at 1kHz (Typ) (nV/rtHz)
Rating
Operating Temperature Range (C)
Pin/Package
OPA549
1    
8    
60    
35    
9    
5    
20    
80    
0.9    
500000    
70    
Military    
-40 to 85    
11Power Package
11TO-220    

Companion parts

Part # Name Product Family Comments
OPA2336   Single-Supply, MicroPower CMOS Operational Amplifiers MicroAmplifier Series   OPERATIONAL AMPLIFIER - PRECISION AMPLIFIER   See Literature sbos093e  Digitally-Controlled Programmable Power Supply application  
DAC7800   Dual Monolithic CMOS 12-Bit Multiplying Digital-to-Analog Converter   DIGITAL TO ANALOG CONVERTER - PRECISION DAC (=<10MSPS)    Choose DAC780X based on digital interface: DAC7800 - 12-bit interface, DAC7801- 8-bit interface + 4 bit, DAC7802 - serial interface
See Literature sbos093e  Digitally-Controlled Programmable Power Supply application  
DAC7801   Dual Monolithic CMOS 12-Bit Multiplying Digital-to-Analog Converter   DIGITAL TO ANALOG CONVERTER - PRECISION DAC (=<10MSPS)    Choose DAC780X based on digital interface: DAC7800 - 12-bit interface, DAC7801- 8-bit interface + 4 bit, DAC7802 - serial interface
See Literature sbos093e  Digitally-Controlled Programmable Power Supply application  
DAC7802   Dual Monolithic CMOS 12-Bit Multiplying Digital-to-Analog Converter   DIGITAL TO ANALOG CONVERTER - PRECISION DAC (=<10MSPS)    Choose DAC780X based on digital interface: DAC7800 - 12-bit interface, DAC7801- 8-bit interface + 4 bit, DAC7802 - serial interface
See Literature sbos093e  Digitally-Controlled Programmable Power Supply application