SBOS092B June   1998  – January 2025 XTR106

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 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 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 Linearization
      2. 6.3.2 Reverse-Voltage Protection
      3. 6.3.3 Overvoltage Surge Protection
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 External Transistor
      2. 7.1.2 Loop Power Supply
      3. 7.1.3 Bridge Balance
      4. 7.1.4 Underscale Current
      5. 7.1.5 Low-Impedance Bridges
      6. 7.1.6 Other Sensor Types
      7. 7.1.7 Radio Frequency Interference
      8. 7.1.8 Error Analysis
    2. 7.2 Typical Applications
    3. 7.3 Layout
    4. 7.4 Layout Guidelines
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
    2. 8.2 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.3 Overvoltage Surge Protection

Remote connections to current transmitters are sometimes subjected to voltage surges. Limit the maximum surge voltage applied to the XTR106 to the lowest practical value. Various Zener diode and surge clamping diodes are specially designed for this purpose. Select a clamp diode with as low a voltage rating as possible for best protection. For example, a 36V protection diode maintains proper transmitter operation at normal loop voltages, yet provides an appropriate level of protection against voltage surges. The XTR106 is specified to an absolute maximum loop voltage of 40V.

Most surge protection Zener diodes have a diode characteristic in the forward direction that conducts excessive current, possibly damaging receiving-side circuitry, if the loop connections are reversed. If a surge protection diode is used, use a series diode or diode bridge for protection against reversed connections.