SBOU034B February   2006  – October 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 XTR300EVM Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Evaluation Setup
    2. 2.2 Jumper Configuration Settings
    3. 2.3 Features
      1. 2.3.1 Input Signal
      2. 2.3.2 Reference Voltage
      3. 2.3.3 XTR300EVM Output
      4. 2.3.4 Error Flags
      5. 2.3.5 IMON: Current Monitor Output
      6. 2.3.6 IAOUT: Voltage Monitor
      7. 2.3.7 Other Test Points
    4. 2.4 Output Mode Configurations
      1. 2.4.1 Current Mode Configurations
        1. 2.4.1.1 Single-Ended Current Output
        2. 2.4.1.2 Bidirectional Current Output
        3. 2.4.1.3 Verifying Acceptable Load in Current Mode
      2. 2.4.2 Voltage Mode Configurations
        1. 2.4.2.1 Single-Ended Voltage Output
        2. 2.4.2.2 Bidirectional Voltage Output
        3. 2.4.2.3 Verifying Acceptable Load in Voltage Mode
    5. 2.5 Power Requirements
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 XTR300EVM Top Layer Silkscreen
    3. 3.3 Bill of Materials
  9. 4Additional Information
    1. 4.1 Trademarks
  10. 5Related Documentation
  11. 6Revision History

2.3.4 Error Flags

The XTR300 has three error flags to indicate when a specific error has occurred as described in Table 2-2.

Table 2-2 Error Flags
Error FlagsDescription
EFCMInstrumentation Amplifier (IA) Common-Mode Over Range fault pin goes low as soon as the inputs of the IA reach the limits of the linear operation for the input voltage.
EFLDLoad Error flag fault pin indicates fault conditions driving voltage or current into the load. In voltage output mode, the flag monitors the voltage limits of the output swing and the current limit condition caused from short or low load resistance. In current output mode, the flag indicates a saturation into the supply rails from a high load resistance or open load.
EFOTOvertemperature fault pin goes low if the chip temperature reaches a temperature of 140°C and resets as soon as the chip cools down to 125°C. The flag does not automatically shut down the output; the flag allows the user system to take action on the situation. If desired, this output can be connected to output disable (OD) which disables the output and therefore removes the source of power. This connection acts like an automatic shut down, but requires a 2.2kΩ external pullup resistor to safely override the internal current sources. The IA channel is not affected, which allows continuous observation of the voltage at the output.

The LEDs D1, D2, and D3 turn on when the XTR300 experiences an overtemperature fault, a load error fault, or an IA common-mode over range fault, respectively. Alternatively, the voltages at the error flags can be monitored at the LD, OT, and CM test points.