BL-M7638BU4 IEEE 802.11a/b/g/n 300Mbps WLAN + Bluetooth 5.0 Combo Module SHENZHEN BILIAN ELECTRONIC CO., LTD Add: 10~11/F, Building 1A, Huaqiang idea park, Guangming district, Shenzhen. Guangdong, China Web: www.b-link.net.
Top view Bottom view Module Name: BL-M7638BU4 Module Type: 802.11a/b/g/n 300Mbps WLAN + Bluetooth 5.0 Combo Module Revision: V1.0 Customer Approval: Company: Title: Signature: Date: BL-link Approval: Title: Signature: 1 Date: http://www.b-link.net.
Revision History Revision 1.0 Summary Release Date Official release 2021-01-26 1. Introduction BL-M7638BU4 module design is based on Mediatek MT7638BUN solution, The MT7638BUN is a highly integrated single chip which has built in a 2x2 dual-band wireless LAN radio and Bluetooth radio. It includes Bluetooth EDR and LE radio which complies with Bluetooth v2.1+EDR, v4.2, and v5.0. The Module is a highly integrated MAC/BBP and 2.4/5GHz PA/LNA single chip which supports a 300Mbps PHY rate.
1.3 General Specifications Module Name BL-M7638BU4 Chipset Mediatek MT7638BUN WiFi Standards IEEE802.11a/b/g/n Host Interface USB2.0 Dimension 33mm x 70mm x 6.0mm (L*W*H) ，Tolerance: ±0.15mm Power Supply DC5V±0.2V Operation Temperature -20℃ to +70℃ Storage Temperature -40℃ to +125℃ Operation Humidity 10% to 95% RH (Non-Condensing) 3 http://www.b-link.net.
2. Pin Assignments Top view 2.1 Pin Definition No Pin Name Type Description Supply 1 DC_EN I/O Reset the module by controlling the DC / DC enable pin 2 BT_WAKE_HOST I/O Bluetooth wake up host 3 VDD P Main power supply 4 DM- I/O USB 2.0 differential line 5 DP+ I/O USB 2.
3. Electrical and Thermal Specifications 3.1 Recommended Operating Conditions Parameters Min Typ Max Units Ambient Operating Temperature -20 25 70 ℃ External Antenna VSWR / / / / 4.8 5.0 5.2 V Supply Voltage DC-5V 3.2 Current Consumption Conditions : VDD=5V ; Ta:25℃ VDD Current (average) Use Case Typ Max Units 2.4G 1Mbps TX (RF-Test，1TX) for 18dBm 260 290 mA 2.4G 1Mbps RX (RF-Test，1RX) 100 120 mA 2.4G 11Mbps TX (RF-Test，1TX) for 18dBm 270 300 mA 2.
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4. WIFI & Bluetooth RF Specifications 4.1 WIFI RF Specification Conditions : VDD=5V ; Ta:25℃ Features Description WLAN Standard IEEE 802.11a/b/g/n Frequency Range 2.4GHz~2.4835GHz /5.15~5.85Hz CH1~CH13 (For 20MHz Channels) Channels CH36, CH40, CH44, CH48; CH149~CH165 (For 20MHz Channels) 802.11b (DSSS) : DBPSK , DQPSK , CCK ; 802.11a/g (OFDM) : BPSK , QPSK , 16QAM , 64QAM ; Modulation 802.11n (OFDM) : BPSK , QPSK , 16QAM , 64QAM ; BT: 8DPSK,π/4DQPSK, GFSK WIFI: 802.11b: 1, 2 ,5.5,11Mbps 802.
4.1 Bluetooth RF Specification Conditions: VDD33=3.3V; Ta:25℃ Features Description Bluetooth Specification Bluetooth v2.1+EDR/3.0+HS/4.2/5.0 Frequency Range 2.4~2.4835GHz (2.4GHz ISM Band) Channels Power Classes Bluetooth Classic: Ch0~Ch78 (For 1MHz Channels); Bluetooth Low Energy: Ch0~Ch39 (For 2MHz Channels); Bluetooth Classic: Class1; Bluetooth Low Energy: Class1.
Bluetooth Receiver Specifications Sensitivity Items Input Level (Typ: dBm） Maximum Input Level BER Input Level (Typ: dBm） BER BR_1M -90 ≦0.1% -5 ≦0.1% EDR_2M -80 ≦0.01% -5 ≦0.1% EDR_3M -70 ≦0.01% -5 ≦0.1% Input Level PER Input Level PER LE_125K -90 ≦30.8% -5 ≦30.8% LE_500K -90 ≦30.8% -5 ≦30.8% LE_1M -90 ≦30.8% -5 ≦30.8% LE_2M -90 ≦30.8% -5 ≦30.8% Note: For BER receiver sensitivity test, bit error rate (BER) better than 0.
Top view Side view Module dimension: 33.0*70.0*6.0mm (L*W*H; Tolerance: ±0.15mm) Module Bow and Twist：≤0.1mm 10 http://www.b-link.net.
6. Reflow Soldering Standard Conditions Please use the reflow within 2 times. Set up the highest temperature within 250℃. 7. Key Components Of Module No. Parts Specification Manufacturer 1 Chipset MT7638BUN Mediatek Note Shenzhen Tie Fa Technology limited 2 PCB BL-M7638BU4 Guangdong KINGSHINE ELECTRONICS CO., LTD Quzhou Sunlord Electronics Co., Ltd HUBEI TKD ELECTRONICS TECHNOLOGY CO., LTD. 3 Crystal 240MHz-10pF-10ppm-322 LUCKI CM ELECTRONICS CO., LTD 5 HOSONIC ELECTRONIC CO., LTD.
8. Package and Storage Information 8.1 Package Dimensions 12 http://www.b-link.net.
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8.2 Storage Conditions Absolute Maximum Ratings: Storage temperature: -45℃ to +85℃ Storage humidity: 10% to 95% RH（Non-Condensing） Recommended Storage Conditions: Storage temperature: 5℃ to +40℃ Storage humidity: 20% to 90% RH ESD Sensitivity： The Module is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions! 14 http://www.b-link.net.
FCC Statement This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) thi s device may not cause harmful interference, and (2) this device must accept any interference received, incl uding interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user’ s authority to operate the equipment.
Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01 2.2 List of applicable FCC rules CFR 47 FCC PART 15 SUBPART C has been investigated. It is applicable to the modular transmitter 2.3 Specific operational use conditions This module is stand-alone modular.
