Product details

Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 8 Total supply voltage (Max) (+5V=5, +/-5V=10) 60 Output current (Typ) (mA) 8000 GBW (Typ) (MHz) 0.9 Slew rate (Typ) (V/us) 9 Vos (offset voltage @ 25 C) (Max) (mV) 5 Offset drift (Typ) (uV/C) 20 Iq per channel (Typ) (mA) 26 Features Adj Current Limit, Shutdown Rating Catalog Operating temperature range (C) -40 to 85 Input bias current (Max) (pA) 500000 CMRR (Typ) (dB) 95 Rail-to-rail In to V- Architecture Bipolar
Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 8 Total supply voltage (Max) (+5V=5, +/-5V=10) 60 Output current (Typ) (mA) 8000 GBW (Typ) (MHz) 0.9 Slew rate (Typ) (V/us) 9 Vos (offset voltage @ 25 C) (Max) (mV) 5 Offset drift (Typ) (uV/C) 20 Iq per channel (Typ) (mA) 26 Features Adj Current Limit, Shutdown Rating Catalog Operating temperature range (C) -40 to 85 Input bias current (Max) (pA) 500000 CMRR (Typ) (dB) 95 Rail-to-rail In to V- Architecture Bipolar
TO-220 (KV) 11 188 mm² 20.02 x 9.37 TO-OTHER (KVC) 11 90 mm² 20.02 x 4.5
  • 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

All trademarks are the property of their respective owners.

  • 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

All trademarks are the property of their respective owners.

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.

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.

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Technical documentation

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Type Title Date
* Data sheet High-Voltage, High-Current Operational Amplifier datasheet (Rev. E) 07 Oct 2005
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note MTTF, Failrate, Reliability, and Life Testing 04 Oct 2000
Application note DC MOTOR SPEED CONTROLLER: Control a DC Motor without Tachometer Feedback 27 Sep 2000
Application note Power Amplifier Stress and Power Handling Limitations 27 Sep 2000

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

OPA549 TINA-TI Reference Design (Rev. B)

SBOC215B.TSC (92 KB) - TINA-TI Reference Design
Simulation model

OPA549 PSpice Model (Rev. A)

SBOM089A.ZIP (56 KB) - PSpice Model
Simulation model

OPA549 TINA-TI Spice Model (Rev. A)

SBOM288A.ZIP (5 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
Reference designs

TIPD138 — SPI programmable 16-bit, 36V, 1A Power Supply with Integrated Current Shunt

This Verified Design provides the theory, component selection, simulation, PCB design, and measurement details for a SPI controlled 36V power supply capable of sourcing 1A.  It also includes an intergrated high-side current shunt accurate to 1% across multiple decades of current load.  (...)
Package Pins Download
Power Package (KVC) 11 View options
TO-220 (KV) 11 View options

Ordering & quality

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