SBOU317 September   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Power Connections
      1. 2.1.1 Split-Supply Operation
      2. 2.1.2 Single-Supply Operation
    2. 2.2 Input and Output Connections
      1. 2.2.1 Bias Mode Control Pins
      2. 2.2.2 IADJ Pin Connection
      3. 2.2.3 Optional VCM Pin Connection
  7. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 Board Layout
    3. 3.3 Bill of Materials
  8. 4Additional Information
    1. 4.1 Trademarks
  9. 5Related Documentation

2.2.2 IADJ Pin Connection

The fine current adjustment (IADJ) pin of the device is controlled using the potentiometer R17 on the board. By default, the potentiometer is set to 0Ω, which yields the maximum quiescent current for each bias mode. By increasing the resistance of the potentiometer, the quiescent current can be reduced to a desired lowered value at the cost of reduced performance.

Resistors R29 (series) and R30 (parallel) are included for additional control options of the IADJ pin. Both resistors can be used to set values for the potentiometer. R29 can be used to float the IADJ pin and R30 can be used to bypass the potentiometer.