Realtek RTL8720DN is a WiFi and Bluetooth module that has dual bands for WiFi communication. It is worth saying that this little module can support WiFi 5G and Bluetooth Low Energy 5.0 as well. This WiFi and Bluetooth module is a highly integrated WiFi and Bluetooth module with the main chip RTL8720DN, it can be regarded as an SoC for the WiFi and Bluetooth application with typical SBCs. 

Highlighted Features

• WiFi and Bluetooth module.
• Support both WiFi 2.4G and WiFi 5G with protocol 802.11 a/b/g/n 1x1 from 20/40 MHz up to MCS7.
• Support WiFi low power mode. 
• Support Bluetooth (BLE) 5.0.

Except for the main chip, the Realtek8720DN module consists of a high-performance MCU named KM4, a low-power MCU named KM0, WLAN (802.11 a/b/g/n) MAC, a 1T1R capable WLAN baseband, RF, Bluetooth, and peripherals. An inner antenna and many interfaces are available in this little WiFi and Bluetooth module. 

Compare with the ESP series, this WiFi and Bluetooth module has more functions like 5G WiFi and Bluetooth 5.0. As a matter of fact, this little module can be widely used for more applications than the ESP series.

Specification

Hardware Features

• Model: BW16
• Antenna Type: IPEX connect or PCB Antenna
• Major Chipset: RTL8720DN
• Power Supply: 3.3±5% V
• Dimension: 24 .0*16.0* 3.0mm (LxWxH) ±0.2mm

WIFI Wireless Features

• Wireless Standards: IEEE 802.11 a/b/g/n
• Frequency Range: 2.412-2.484GHz & 5.180-5.825GHz
• Data Rates: 802.11a : 6,9,12,18,24,36,48,54Mbps / 802.11b : 1,2,5.5,11Mbps /802.11g : 6,9,12,18,24,36,48,54Mbps 
• Data Rates: 802.11n : MCS0--MCS7 @ HT20 /2.4GHz and 5GHz band
• Data Rates: 802.11n:  MCS0--MCS7 @ HT40 /2.4GHz and 5GHz band  
• Modulation Technique: DSSS (DBPSK, DQPSK, CCK) / OFDM (BPSK, QPSK, 16-QAM, 64-QAM)
• Work Mode: AP, Station, AP/Client

Others

• Operating Temperature: -20℃~85℃
• Storage Temperature: -40℃~125℃
• Operating Humidity: 10%~90% (non-condensing)
• Storage Humidity: 5%~90% (non-condensing )
• Certification: RoHS compliance、FCC、CE、SRRC

Bluetooth Wireless Features

• Wireless Standards: Bluetooth5.0 BLE
• Frequency Range: 2.402GHz -2.480GHz
• Receiver Sensitivity: -92dBm
• Transmit Power: 7±2dBm

Peripheral Interfaces

• 1 common ADC interface
• 2 log UART with standard baud rate support
• 1 I2C interface are shared with the PWM interfaces
• 1 SPI interfaces are shared with the PWM interfaces
• 4 PWM interfaces
• All of the above interfaces can be used as GPIO

Applications

• BLE beacon
• Industrial wireless control
• Bluetooth gateway
• Wearable electronic devices
• Security ID tags
• Smart home

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