RF-BM-BG22A www.szrfstar.com V1.0a - May, 2020 1 Device Overview 1.1 Description RF-BM-BG22A is an RF module based on EFR32BG22C224F512GM32-CR, one of Gecko family of SoCs from Silicon Labs, with a 32-bit ARM ® Cortex ® -M33 core with 76.8 MHz maximum operating frequency. It integrates a 38.4 MHz crystal, a matching, an antenna matching, a low-pass filter and a meander line inverted-F PCB antenna.
RF-BM-BG22A www.szrfstar.com V1.0a - May, 2020 1.5 Part Number Conventions The part numbers are of the form of RF-BM-BG22A where the fields are defined as follows: BG22 Company Name Module Version The first version RF-star Wireless Type Chipset Bluetooth Module Silicon Labs EFR32BG22 Series Figure 2.
V1.0a - May, 2020 6 Contact Us ..................................19 Table of Figures Figure 1. Functional Block Diagram of RF-BM-BG22A ................2 Figure 2. Part Number Conventions of RF-BM-BG22A ................3 Figure 3. Pin Diagram of RF-BM-BG22A ......................7 Figure 4. Photos of RF-BM-BG22A ........................11 Figure 5.
RF-BM-BG22A www.szrfstar.com V1.0a - May, 2020 2 Module Configuration and Functions 2.1 Module Parameters Table 1. Parameters of RF-BM-BG22A Chipset EFR32BG22C224F512GM32-CR Supply Power Voltage 1.71 V ~ 3.8 V, recommended to 3.3 V Frequency 2402 MHz ~ 2480 MHz Transmit Power -20.0 dBm ~ +6 dBm (typical: 0 dBm)
Functional operation does not guarantee performance beyond the limits of the conditional parameter values in the table below. Long-term work beyond this limit will affect the reliability of the module more or less. Table 3. Recommended Operating Conditions of RF-BM-BG22A Items Condition Typ.
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RF-BM-BG22A www.szrfstar.com V1.0a - May, 2020 The test method is closely related to the current. For example, the output load antenna is different from the standard 50 Ω test data. Shenzhen RF-star Technology Co., Ltd. Page 10 of 19...
V1.0a - May, 2020 4.3 Schematic Diagram and Reference Design The schematic diagram is as follows: Figure 6. Schematic Diagram of RF-BM-BG22A The reference design is as follows: Figure 7. Reference Design of RF-BM-BG22A Shenzhen RF-star Technology Co., Ltd.
10. The antenna must not be installed inside the metal case, which will cause the transmission distance to be greatly weakened. Shenzhen RF-star Technology Co., Ltd. Page 13 of 19...
(3) It is the best to hollow out the antenna position in the following figure so as to ensure that S11 of the module is minimally affected. Figure 8. Recommendation of Antenna Layout Note: The hollow-out position (yellow part) is based on the antenna used, and RF-star recommend the distance is no less than 10 mm. 4.5 Trouble Shooting 4.5.1 Unsatisfactory Transmission Distance...
3. If the extension wire or feeder wire is of poor quality or too long, the bit error rate will be high. 4.6 Electrostatics Discharge Warnings The module will be damaged for the discharge of static. RF-star suggest that all modules should follow the 3 precautions below: 1.
Time from 25 ℃ to Peak Temperature (t Max. 6 minutes Max. 8 minutes 20±10 s 20±10 s Time of Soldering Zone (t Figure 9. Recommended Reflow for Lead Free Solder Shenzhen RF-star Technology Co., Ltd. Page 16 of 19...
1. The document will be optimized and updated from time to time. Before using this document, please make sure it is the latest version. 2. To obtain the latest document, please download it from the official website: www.szrfstar.com. Shenzhen RF-star Technology Co., Ltd. Page 18 of 19...
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