SBOS070C October   1997  – June 2015 OPA548

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (continued)
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Adjustable Current Limit
      2. 8.3.2 Enable/Status (E/S) Pin
      3. 8.3.3 Thermal Shutdown Status
    4. 8.4 Device Functional Modes
      1. 8.4.1 Output Disable
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Basic Circuit Connections
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Power Supply Requirements
          2. 9.2.1.2.2 Gain Setting and Input Configuration
          3. 9.2.1.2.3 Current Limit
          4. 9.2.1.2.4 Safe-Operating-Area
          5. 9.2.1.2.5 Heat Sinking
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Monitoring Single- and Dual-Supplies
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Output Disable and Thermal Shutdown Status
      3. 9.2.3 Programmable Power Supply
    3. 9.3 System Examples
  10. 10Power Supply Recommendations
    1. 10.1 Output Stage Compensation
    2. 10.2 Output Protection
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Safe Operating Area
      2. 11.1.2 Amplifier Mounting
    2. 11.2 Layout Example
    3. 11.3 Power Dissipation
    4. 11.4 Thermal Considerations
    5. 11.5 Heat Sinking
      1. 11.5.1 Heat Sink Selection Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 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

2 Applications

  • Valve, Actuator Drivers
  • SYNCHRO, SERVO Drivers
  • Power Supplies
  • Test Equipment
  • Transducer Excitation
  • Audio Amplifiers

3 Description

The OPA548 device is a low-cost, high-voltage and high-current operational amplifier that's 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 current.

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

The OPA548 device is internally protected against over-temperature conditions and current overloads. In addition, the OPA548 device 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 OPA548 device senses the load indirectly. This allows the current limit to be adjusted from 0 A to 5 A with a resistor and potentiometer or controlled digitally with a voltage-out or current-out DAC.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
OPA548 TO-220 (7) 10.17 mm × 8.38 mm
TO-263 (7) 10.10 mm × 8.89 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

OPA548 keygraphic1.png