User's Guide
Table Of Contents
- 1. WFM200 Pinout
- 2. Device Configuration
- 3. Features Description
- 4. Power Supplies
- 5. Application Schematic Recommendations
- 6. Typical Application Schematics
- 7. Layout Recommendations
- 7.1 Generic RF Layout Considerations
- 7.2 GND and RF Pads Including the Diversity Port and External Antennas
- 7.3 Module Antenna
- 7.3.1 Small Board Size Recommendations for Good RF Performance
- 7.3.2 Extended X Dimension Recommendation for Good RF Performance
- 7.3.3 Y Dimension (65 to 80 mm) Recommendation for Good RF Performance
- 7.3.4 Y Dimension (80 mm or Larger) Recommendation for Good RF Performance
- 7.3.5 WFM200 Portion One Corner Bias with 3 mm Metal Keep-Outs
- 7.3.6 Recommended Antenna Loop Trace Capacitor Values
- 7.4 WFM200 Reference Evaluation Board
- 8. Recommendations for Certification
- 9. Package Outline
- 10. Integral Antenna Loop and Keep-Out Required Dimensions
- 11. Recommended PCB Land Pattern
Table 9.1. Top Marking Description
Dimension MIN NOM MAX
A 1.20 1.30 1.40
A1 0.26 0.30 0.34
A2 0.95 1.00 1.05
b 0.27 0.32 0.37
D 6.50 BSC
e 0.50 BSC
E 6.50 BSC
L 0.43 0.48 0.53
L1 0.11 0.16 0.21
L2 0.34 0.39 0.44
L3 0.24 0.29 0.34
L4 0.14 0.19 0.24
L5 0.62 0.67 0.72
aaa 0.10
bbb 0.10
ccc 0.10
ddd 0.10
eee 0.10
UG395: WFM200 Hardware Design User's Guide
Package Outline
silabs.com | Building a more connected world. Preliminary Rev. 0.1 | 31