SBOS914F October   2018  – April 2021 INA592

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 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: G = 1/2
    6. 7.6 Electrical Characteristics: G = 2
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Basic Power Supply and Signal Connections
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Operating Voltage
          2. 9.2.1.2.2 Offset Voltage Trim
          3. 9.2.1.2.3 Input Voltage Range
          4. 9.2.1.2.4 Capacitive Load Drive Capability
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Additional Applications
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support 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
9.2.1.2.3 Input Voltage Range

The INA592 is able to measure input voltages beyond the supply rails. The internal resistors divide down the voltage before the voltage reaches the internal op amp, and provide protection to the op amp inputs. Figure 9-3 shows an example of how the voltage division works in a difference-amplifier configuration. For the INA592 to measure correctly, the input voltages at the input nodes of the internal op amp must stay less than 0.1 V of the positive supply rail, and can exceed the negative supply rail by 0.1 V. See Section 10 for more details.

GUID-84A22658-8A02-49CB-86E5-5BDEBA956F49-low.gif Figure 9-3 Voltage Division in the Difference Amplifier Configuration

The INA592 has integrated ESD diodes at the inputs that provide overvoltage protection. This feature simplifies system design by eliminating the need for additional external protection circuitry, and enables a more robust system. The voltages at any of the inputs of the devices in G = ½ configuration with ±18-V supplies can safely range from +VS − 54 V up to −VS + 54 V. For example, on ±10-V supplies, input voltages can go as high as ±30 V.