High-Voltage, High-Current Operational Amplifier



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 HiRel Enhanced Product Operating temperature range (C) -55 to 125 Input bias current (Max) (pA) 500000 CMRR (Typ) (dB) 95 Rail-to-rail In to V- Architecture Bipolar open-in-new Find other Power op amps

Package | Pins | Size

TO-OTHER (KVC) 11 90 mm² 20.02 x 4.5 open-in-new Find other Power op amps


  • High Output Current:
    • 8-A Continuous
    • 10-A Peak
  • Wide Power Supply Range:
    • Single Supply: 8 V to 60 V
    • Dual Supply: ±4 V to ±30 V
  • Wide Output Voltage Swing
  • Fully Protected:
    • Thermal Shutdown
    • Adjustable Current
  • Output Disable Control
  • Thermal Shutdown Indicator
  • High Slew Rate: 9 V/µs
  • Control Reference Pin
  • 11-Lead Power Package
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The OPA549 is a low-cost, high-voltage and 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 0 A to 10 A with a resistor or 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 temperature range of −55°C to 125°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet High-Voltage, High-Current Operational Amplifier. datasheet May 18, 2012
* Radiation & Reliability reports OPA549MKVC Reliability Report Dec. 22, 2014
White papers Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) Nov. 30, 2018
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017

Design & development

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Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
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SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 (...)
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

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Power Package (KVC) 11 View options

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