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OPA548

ACTIVE

High-voltage, high-current, wide-output-voltage-swing power operational amplifier

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Data sheet

OPA548

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 60 Iout (typ) (A) 3 GBW (typ) (MHz) 1 Slew rate (typ) (V/µs) 10 Vos (offset voltage at 25°C) (max) (mV) 10 Offset drift (typ) (V/°C) 0.00003 Iq per channel (typ) (mA) 17 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 (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 60 Iout (typ) (A) 3 GBW (typ) (MHz) 1 Slew rate (typ) (V/µs) 10 Vos (offset voltage at 25°C) (max) (mV) 10 Offset drift (typ) (V/°C) 0.00003 Iq per channel (typ) (mA) 17 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 (KC) 7 46.5328 mm² 10.16 x 4.58 TO-220 (KVT) 7 83.9216 mm² 10.16 x 8.26 TO-263 (KTW) 7 153.924 mm² 10.1 x 15.24
  • Wide supply range
    • Single supply: 8 V to 60 V
    • Dual supply: ±4 V to ±30 V
  • High-output current:
    • 3-A continuous
    • 5-A peak
  • Wide output voltage swing
  • Fully protected:
    • Thermal shutdown
    • Adjustable current limit
  • Output disable control˜
  • Thermal shutdown indicator
  • High slew rate: 10 V
  • Low quiescent current
  • Packages:
    • 7-lead TO-220, zip and straight leads
    • 7-lead DDPAK surface-mount
  • Wide supply range
    • Single supply: 8 V to 60 V
    • Dual supply: ±4 V to ±30 V
  • High-output current:
    • 3-A continuous
    • 5-A peak
  • Wide output voltage swing
  • Fully protected:
    • Thermal shutdown
    • Adjustable current limit
  • Output disable control˜
  • Thermal shutdown indicator
  • High slew rate: 10 V
  • Low quiescent current
  • Packages:
    • 7-lead TO-220, zip and straight leads
    • 7-lead DDPAK surface-mount

The OPA548 device is a low-cost, high-voltage, and high-current operational amplifier that is designed to drive a wide variety of loads. A laser-trimmed, monolithic, integrated circuit provides excellent low-level signal accuracy and high-output voltage and current.

The OPA548 operates from either single or dual supplies for design flexibility. In single-supply operation, the input common-mode range extends below ground.

The OPA548 is internally protected against overtemperature conditions and current overloads. In addition, the OPA548 is designed to provide an accurate, user-selected current limit. Unlike other designs that use a power resistor in series with the output current path, the OPA548 senses the load indirectly. The current limit is adjustable from 0 A to 5 A with an external resistor and potentiometer, or controllable 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 device 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. The device is specified for operation over the extended industrial temperature range, –40°C to 85°C. A SPICE macromodel is available for design analysis.

The OPA548 device is a low-cost, high-voltage, and high-current operational amplifier that is designed to drive a wide variety of loads. A laser-trimmed, monolithic, integrated circuit provides excellent low-level signal accuracy and high-output voltage and current.

The OPA548 operates from either single or dual supplies for design flexibility. In single-supply operation, the input common-mode range extends below ground.

The OPA548 is internally protected against overtemperature conditions and current overloads. In addition, the OPA548 is designed to provide an accurate, user-selected current limit. Unlike other designs that use a power resistor in series with the output current path, the OPA548 senses the load indirectly. The current limit is adjustable from 0 A to 5 A with an external resistor and potentiometer, or controllable 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 device 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. The device is specified for operation over the extended industrial temperature range, –40°C to 85°C. A SPICE macromodel is available for design analysis.
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Technical documentation

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Type Title Date
* Data sheet OPA548 High-Voltage, High-Current Operational Amplifier datasheet (Rev. D) PDF | HTML 18 Dec 2019
E-book An Engineer’s Guide to Designing with Precision Amplifiers 29 Apr 2021
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
EVM User's guide OPA547EVM, OPA548EVM User's Guide 10 Nov 2015
Technical article Why correct voltage matters for op-amp PowerPads™ 06 Nov 2014
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.

Evaluation board

OPA548EVM — OPA548 Evaluation Module

The OPA548EVM is a platform for evaluating the OPA548 in a variety of circuit configurations. Circuit configuations include inverting/non-inverting gain, single/dual power supply, internal/external load and external reference. Access is provided to the Enable/Shutdown pin and LED's provide visual (...)

User guide: PDF
Not available on TI.com
Simulation model

OPA548 PSpice Model (Rev. C)

SBOM088C.ZIP (25 KB) - PSpice Model
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Simulation model

OPA548 TINA-TI Reference Design (Rev. C)

SBOC114C.TSC (116 KB) - TINA-TI Reference Design
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Simulation model

OPA548 TINA-TI Spice Model (Rev. B)

SBOM191B.ZIP (4 KB) - TINA-TI Spice Model
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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 operational-amplifier (...)
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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 (...)
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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 (...)
User guide: PDF
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Package Pins Download
TO-220 (KC) 7 View options
TO-220 (KVT) 7 View options
TO-263 (KTW) 7 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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