SBOU315 March   2024 PGA849

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 EVM Circuit Description
    2. 2.2 Jumper Settings
    3. 2.3 Power-Supply Connections
    4. 2.4 Analog Input and Output Connections
    5. 2.5 Reference Input
    6. 2.6 Digital Input Pins and Gain Control
    7. 2.7 Modifications
    8. 2.8 Best Practices
      1. 2.8.1 Electrostatic Discharge Caution
      2. 2.8.2 Hot Surface Warning
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  9. 4Additional Information
    1. 4.1 Trademarks
  10. 5Related Documentation

2.7 Modifications

For flexibility, the EVM provides optional capacitors C4 and C14. These capacitors are in parallel with the PGA849 output-stage difference amplifier internal resistors to implement noise filtering. In addition, the evaluation board provides footprints R6, R11, C9, C5, and C11 for optional input low-pass filters, and footprints for load resistor R7. These additional component footprints in the layout allow the user to customize the evaluation circuit. For a full schematic of the PGA849EVM, see Figure 4-1.