SBOSA47 February   2026 OPA2591 , OPA591

ADVANCE INFORMATION  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Pin Configuration and Functions
  6. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information for OPA591
    5. 5.5 Thermal Information OPA2591
    6. 5.6 Electrical Characteristics
  7. 6Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 MUX-Friendly Inputs
      2. 6.3.2 Thermal Protection
      3. 6.3.3 Advanced Slew Boost
      4. 6.3.4 Full-Power Bandwidth Improved
      5. 6.3.5 Overload Recovery
    4. 6.4 Device Functional Modes
  8. 7Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 High Voltage Instrumentation Amplifier
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 DAC Output Gain and Buffer
      3. 7.2.3 Single-Supply Piezoelectric Driver
      4. 7.2.4 Current Booster
    3. 7.3 Creepage and Clearance
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
        1. 7.5.1.1 Thermal Considerations
      2. 7.5.2 Layout Example
  9. 8Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9Mechanical, Packaging, and Orderable Information

3 Description

The OPAx591 is a family of high precision, 85V CMOS power amplifiers available in small, industry standard packages.

These devices are laser trimmed to provide excellent dc performance, including 100µV max offset, 2µV/°C max offset drift. The high power supply and common-mode rejection help these op amps maintain high dc performance across different operating conditions. Degradation of precision is minimal because of the very low input bias current across the entire operating voltage range.

The OPAx591 also excels in ac performance despite the low quiescent current consumption. Proprietary design techniques provide 100V/µs slew rate and MUX-friendly inputs to enable fast settling of large signals. The low broadband noise help maintain signal fidelity across a wide frequency spectrum.

The combination of high precision, low noise, low power, and small packages make the OPAx591 a great choice for high voltage, space constrained systems where power consumption and, or thermal management is critical. Such systems include automated test equipment requiring high voltage and precision, power supplies requiring current or voltage sensing, and piezo actuator driving for haptic feedback systems.

This family of amplifiers operates over the extended industrial temperature range of –40°C to +125°C.

Device Information
PART NUMBER CHANNEL COUNT PACKAGE (1)
OPA591(2) Single DBV (SOT23, 5)
OPA2591(2) Dual D (SOIC, 8)
DGK (VSSOP, 8)
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) This package is preview only.