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Bluetooth Module


EFR32BG22 BLE5.2 Bluetooth Module SKB378

The SKB378 is a highly integrated BLE 5.2 module, designed for high data rate, short-range wireless communication in the 2.4GHz ISM band.

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Antenna Type PCB Antenna/ External Antenna(UF.L IPEX-1)
Wireless Standards Bluetooth ® 5.2
Frequency Range 2400MHz---2483.5MHz

The SKB378 is a highly integrated BLE 5.2 module, designed for high data rate, short-range wireless communication in the 2.4GHz ISM band. The module is based on EFR32BG22 radio transceiver IC, which integrates a 32 bit ARM Cortex-M33 76.8MHz CPU, 32kB Data RAM, 512kB Flash memory and analog and digital peripherals. The SKB378 provides a low power and high cost-effective BLE solution for wireless transmission and AOA positioning.




◆  Main Chip: SILICON LABS EFR32BG22

◆ BLE® 5.2 protocol

◆Support BLE AOA/AOD positioning

◆ Supported BLE all data rates : 125kbps/250kbps/500kbps/1Mbps/2Mbps

◆  Superior Radio Performance: TX Power 6dBm / RX sensitivity -106.7dBm@125kbpsGFSK

◆  Ultra Low Power consumption: TX 4.1mA@0dBm, RX 3.6mA@1Mbps, Sleep current<1.8uA

◆ 4x16bit timers+1x32bit RTC timer+1*24bit Low Energy Timer for waveform generation

◆ ADC 12-bit 1Msps SAR ADC

◆  Abundance of peripheral interface:2*USART(UART/SPI/SmartCard-ISO7816/IrDA/I2S), 2*I2C, PDM for Digital Microphone, 12*PRSFigure

◆  HW encryption: AES 128/256,SHA-1,SHA-2,ECC(up to 256bit),ECDSA(up to 256bit) andECDH

◆  ROHS compliance (Lead-free)


Hardware Features
Model  SKB378
Antenna Type  PCB Antenna/ External Antenna(UF.L IPEX-1)
Chip-set Solution EFR32BG22
Voltage 1.71V~3.8V
Dimension(L×W×H) 17.4×13.7×1.9 mm
Wireless Features
Wireless Standards Bluetooth ® 5.2
Frequency Range  2400MHz---2483.5MHz
Data Rates 125kbps,500kbps,1Mbps,2Mbps(Bluetooth ®5.2)
250kbps Proprietary
Wireless Security AES HW Encryption
Transmit Power -27 to +6dBm(SKB378)
-28 to 0dBm(SKB378A)
Modulation 2(G)FSK with fully configurable shaping
Receive Sensitivity -98.9dBm sensitivity @ 1Mbit/s GFSK
-96.2dBm sensitivity @ 2Mbit/s GFSK
-106.7dBm sensitivity
Wake-on-RF Level1 Min -28dBm(Threshold set to -34dBm)2
Min -23dBm(Threshold set to -28dBm)
Min -19dBm(Threshold set to -22dBm)
Work Mode Central/ Peripheral (Master/ Slave device in BLE connection)
Power Consumption
Default TX 4.1mA @ 0dBm
Default RX 3.6mA (1Mbps GFSK)
Idle mode 1.75uA(EM2 DeepSleep current [32kB RAM retention andRTC running from Precision LFRCO])


1、BLE AOA Anchor/Beacons

2、BLE 5.2 wireless microphone

3、 Computer peripherals and I/O devices

(1) Mouse

(2) Keyboard

(3) Multi-touch trackpad

4、 Interactive entertainment devices

(1) Remote controller

(2) 3D Glasses

(3) Gaming remote controller

5、Personal Area Networks

(1) Health/fitness sensor and monitor devices

(2) Medical devices

(3) Key-fobs + wrist watches

6、Remote control toys

7、Colourful LED Control

8、 Building automation

9、Wireless sensor networks.

10、Asset tracking.

Application Block Diagram

SKB378 module integrates 1.8V DCDC, and the IO voltage is 3.3V by default. It can be poweredbycoinbattery.
The 32.768kHz and 32MHz crystal is default mounted.

1. who are we?
We are based in Guangdong, China, start from 2006,sell to North America(30.00%),Eastern Europe(15.00%),Western Europe(15.00%),Northern Europe(14.00%),Oceania(5.00%),South Asia(5.00%),Domestic Market(5.00%),South America(4.00%),Southeast Asia(3.00%),Africa(00.00%),Mid East(00.00%),Central America(00.00%),Southern Europe(00.00%). There are total about 51-100 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment;