SLASFD2 October   2025 TRF3302

PRODMIX  

  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 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics - GPS L1 Band
    6. 5.6 Electrical Characteristics - GPS L5 and L2 Bands
    7. 5.7 Typical Characteristics – GPS L1 Band
    8. 5.8 Typical Characteristics – GPS L5 and L2 Bands
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 The TRF3302 in a Multiband Configuration
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.4.1 Layout Guidelines

Figure 7-4 shows a good layout example for TRF3302. Only the top signal layer is shown. When designing with relatively wideband RF LNAs that have high gain, take certain board layout precautions to maintain stability and optimized performance. Use a multilayer board to maintain signal integrity and power integrity.

  • Place all the input and output matching components as close to the RF pins as possible, and especially the high Q input matching inductor.
  • Route the RF input and output signals as grounded coplanar waveguide (GCPW) traces.
  • Ensure that the ground planes on the top and any internal layers are well stitched with vias, and the second layer of the PCB has a continuous ground layer without any cutouts in the vicinity of the LNA.
  • Avoid routing clocks and digital control lines near RF signal lines.
  • Do not route RF or DC signal lines over noisy power planes.
  • Place supply decoupling caps close to the device.

See the TRF3302 Evaluation Module user's guide for more details on board layout and design.