SLVUDF9 October   2025

 

  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
  7. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
      1. 3.2.1 PCB Stack-Up and Material
    3. 3.3 Bill of Materials (BOM)
  8. 4Additional Information
    1.     Trademarks

3.1 Schematics

Figure 3-1 shows the EVM schematic.

  1. FB1, C2 and C3 are optional in the BOM. FB1 can be replaced by 0ohm 0201 resistor is sufficient for the DC operation of the TRF3302.
  2. The EVM has input capacitor C12 installed for DC blocking and RF signal coupling while L1 inductor is tuned to support 1300 to 1630MHz (L1 band) by default.
  3. Additional three L1 = 11nH inductors are provided with the EVM kit to replace L1 and optimize the TRF3302 to support 1165 to 1320MHz (L2/L5 band) as shown in Figure 3-2.
  4. Replace C6, C12, L1, and L2 with 3.6pF, 12pF, 7.8nH and 2.8nH to optimize performance across 1165 to 1630MHz (all GPS/GNSS bands) as shown in Figure 3-3. R2 has to be replaced with capacitor value 4.7pF and C5 has to be replaced with inductor value 8.5nH to achieve gain flatness and a slight improvement in output matching.

TRF3302EVM TRF3302EVM Schematic for L1 Band Figure 3-1 TRF3302EVM Schematic for L1 Band
TRF3302EVM TRF3302EVM Schematic for L2/L5 BandsFigure 3-2 TRF3302EVM Schematic for L2/L5 Bands
TRF3302EVM TRF3302EVM Schematic for All GPS/GNSS Bands Figure 3-3 TRF3302EVM Schematic for All GPS/GNSS Bands