Note: RF-BM-BG22A1 and RF-BM-BG22A1I do not support AoA/AoD and LE Long Range (125 Kbps and 500 Kbps) PHYs. 1.2 Description RF-BM-BG22A3(I) is an RF module based on EFR32BG22C224F512GM32-C, one of the Gecko family of SoCs from Silicon Labs, with a 32-bit ARM ®...
DC-DC mode: 2.2 V to 3.8 V Bypass mode: 1.8 V to 3.8 V Figure 1. Functional Block Diagram of RF-BM-BG22A3(I) 1.6 Part Number Conventions The part numbers are of the form of RF-BM-BG22A3(I) where the fields are defined as follows: RF BM BG22 Antenna Type...
RF-BM-BG22A1: PCB antenna, half-hole ANT pin Type of Antenna RF-BM-BG22A1I: IPEX connector, half-hole ANT pin RF-BM-BG22A3: 110 m (@ PCB antenna, 1 Mbps/s); 135 m (@ PCB antenna, 125 kbps/s) Transmission Range in Open Air RF-BM-BG22A3I: 155 m (@ external PCB antenna, 1 Mbps/s); 210 m (@ external PCB antenna, 125 kbps/s) -40 ℃...
The 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 4. Recommended Operating Conditions of RF-BM-BG22A3(I) Items Condition Typ.
Page 12
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Note: 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 11 of 26...
Oen the project, find the Project Explorer window, and open the project folder, as shown in the following figure. Then choose the config folder, find the sl_device_init_hfxo_config.h file, and double-click to open it, as shown in the figure below. Shenzhen RF-star Technology Co., Ltd. Page 12 of 26...
Page 14
Find SL_DEVICE_INIT_HFXO_CTUNE, the official default value of SiliconLabs is 140, RF-star changes it to 72 according to the requirements of the development board hardware RF part. Remark: This is the value for RF-star’s standard EFR32BG22 series modules, the value of the other customized products needs to be confirmed.
Note: The hollow-out position is based on the antenna used. 5.4.2 Antenna Output Mode Modification 1. RF-BM-BG22A3 has two antenna output modes. The one is an onboard PCB antenna and the other is a stamp half- hole output (ANT pin, see pin function table for details).
The traces are as short as possible, and 135° or arc traces are used as much as possible. No vias are used to change layers. More GND vias are placed around the RF traces. Figure 10. Reference Design of the External Antenna Shenzhen RF-star Technology Co., Ltd. Page 17 of 26...
Example: FR4 is a double-layer board with a thickness of 1.0 mm. Through calculation, the width of the trace is 0.8254 mm, and the spacing between traces and copper is 0.22 mm. Figure 12. SI9000 Impedance Calculation Diagram Shenzhen RF-star Technology Co., Ltd. Page 18 of 26...
RF-BM-BG22A3I module is integrated the IPEX version 1 antenna seat, the specification of the antenna seat is as follows: Figure 13. Specification of Antenna Seat The specification of the IPEX wire end is as follows: Figure 14. Specification of IPEX Wire Shenzhen RF-star Technology Co., Ltd. Page 19 of 26...
2. Seawater has a strong ability to absorb radio waves, so the test results by the seaside are poor. 3. The signal attenuation will be very obvious if there is metal near the antenna or if the module is placed inside the Shenzhen RF-star Technology Co., Ltd. Page 20 of 26...
3. If the extension wire or feeder wire is of poor quality or too long, the bit error rate will be high. 5.7 Electrostatics Discharge Warnings The module will be damaged by the discharge of static. RF-star suggests that all modules should follow the 3 precautions below: 1.
Max. 6 ℃/s Time from 25 ℃ to Peak Temperature (t Max. 6 minutes Max. 8 minutes Time of Soldering Zone (t 20±10 s 20±10 s Figure 15. Recommended Reflow for Lead-Free Solder Shenzhen RF-star Technology Co., Ltd. Page 22 of 26...
The default package method is . If you need the modules to be shipped by tape & reel, pls contact us in advance. Figure 16. Default Package by Tray Shenzhen RF-star Technology Co., Ltd. Page 23 of 26...
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.rfstariot.com and www.szrfstar.com. Shenzhen RF-star Technology Co., Ltd. Page 25 of 26...
Need help?
Do you have a question about the RF-BM-BG22A3 and is the answer not in the manual?
Questions and answers