SBOU244 June   2020 INA281

 

  1.   INA281EVM
    1.     Trademarks
    2. 1 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
    3. 2 Overview
      1. 2.1 EVM Kit Contents
      2. 2.2 Related Documentation From Texas Instruments
    4. 3 Hardware
      1. 3.1 Features
    5. 4 Operation
      1. 4.1 Quick Start Setup
      2. 4.2 Measurements
    6. 5 EVM Components
      1. 5.1 R2_Xn, R3_Xn, R4_Xn, C2_Xn, C3_Xn
      2. 5.2 C1_Xn
      3. 5.3 R1_Xn
      4. 5.4 U1_Xn (INA281)
    7. 6 Schematic, PCB Layout, and Bill of Materials
      1. 6.1 Schematics
      2. 6.2 PCB Layout
      3. 6.3 Bill of Materials
        1. 6.3.1 Bill of Materials

5.1 R2_Xn, R3_Xn, R4_Xn, C2_Xn, C3_Xn

R2_Xn, R3_Xn, R4_Xn, are factory-installed 0-Ω 0603 resistors.

C2_Xn, C3_Xn, are not populated.

Collectively, these pads allow for user-defined filters for the input pins (IN+ and IN–) and output pin (OUT) of INA281. If a filter is desired, remove these resistors and replace them with > 0-Ω SMT resistors, and populate the capacitor pads with capacitors. When using input filtering, take into account the input bias current of the device.