SBOSA42B June   2024  – December 2025 OPA2596 , OPA596

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information OPA596
    5. 5.5 Thermal Information OPA596
    6. 5.6 Electrical Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Detailed 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 Overload Recovery
      5. 6.3.5 Full-Power Bandwidth Improved
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Bridge-Connected Piezoelectric Driver
        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
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
      3. 7.2.3 Single-Supply Piezoelectric Driver
      4. 7.2.4 High-Side Current Sense
      5. 7.2.5 High-Voltage Instrumentation Amplifier
      6. 7.2.6 Composite Amplifier
    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. 8 Device 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. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.2.1.1 Design Requirements

The OPAx596 is used to drive a piezoelectric actuator with a 100V operating range at a relatively low frequency of 100Hz. The large capacitance inherent to the piezoelectric actuator can cause undesired ringing of the driver amplifier. An inaccurate response of the actuator is possible due in part to amplifier instability. Adequate phase margin for a 500nF equivalent load and wide output swing capability is necessary for a robust driver circuit for the piezoelectric actuator presented here. Table 7-1 shows the design parameters.

Table 7-1 Design Parameters
PARAMETER VALUE
Power supply voltage 65V
Piezoelectric actuator capacitance (1kHz) 500nF
Piezoelectric operating voltage range 0V to 100V
Operating frequency 100Hz
DAC output voltage 5VPP