L287B-SR Wi-Fi Dual-band 1X1 11a/b/g/n/ac +Bluetooth 5.
L287B-SR Module Datasheet Office: 6 Floor, Building U6, Junxiang U8 Park, Hangcheng Avenue, Bao'an District, Shenzhen City, CHINA Factory: No.8, Litong Road, Liuyang Economic & Technical Development Zone, Changsha, Hunan, CHINA TEL: +86-755-2955-8186 Website: www.fn-link.
L287B-SR Revision History Version Date Revision Content Draft Approved 1.0 2021/03/23 Draft version Lgp Szs 1.1 2021/03/31 Correct typos Wesley Szs 1.2 2021/05/06 Pin map change Wesley Szs 1.3 2021/05/20 Change pin13 to NC Wesley Szs 1.4 2021/06/11 Refine section 1.3, 1.4, 2.1, 2.2, 4.2, 5.1, 6.1 and 7 Wesley Qjp 1.5 2021/07/16 Add power consumption, refine section 2.1 and 3.1. Wesley Qjp 1.6 2021/08/18 Add notice for UART baud-rate and VCC power supply; correct typos.
L287B-SR CONTENTS 1 Overview.............................................................................................................................. 2 1.1 Introduction....................................................................................................................2 1.2 Features.........................................................................................................................2 1.3 Block Diagram....................................................................
L287B-SR 1 Overview 1.1 Introduction L287B-SR has dual-band Wi-Fi and Bluetooth functionalities. It is based on NXP 88W8987 chipset, a highly-integrated IEEE 802.11a/b/g/n/ac MAC/Baseband/RF WLAN and Bluetooth Baseband/RF single chip. The module provides SDIO3.0 interface for Wi-Fi and HS-UART/PCM for Bluetooth. L287B-SR can achieve up to a speed of 433.3Mbps with single stream 802.11ac WLAN connection. It is a perfect solution for a combination of Wi-Fi and BT technologies. 1.
L287B-SR 1.4 General Specification Model Name L287B-SR Dimension L x W x H: 15 x 13 x 2.15 mm (typical) Wi-Fi Interface SDIO3.0 BT Interface UART / PCM Operating temperature -30°C to 85°C Storage temperature -40°C to 125°C [Note] Baud-rate of UART interface is 3000000 by default. 1.5 Recommended Operating Rating Min. Typ. Max. Unit -30 25 85 °C VCC33 3.135 3.3 3.465 V VDDIO 1.71 1.8 1.89 V Operating Temperature 1.
L287B-SR 2 Wi-Fi RF Specification 2.1 2.4GHz RF Specification Feature Description WLAN Standard IEEE 802.11 b/g/n Wi-Fi compliant Frequency Range 2.400 GHz ~ 2.4835 GHz (2.4 GHz ISM Band) Number of Channels 2.4GHz：Ch1 ~ Ch14 Spectrum Mask Min. b/g/n Typ. b/g/n Max. b/g/n Unit b/g/n 1st side lobes(to fc ± 11MHZ) - -43/-30/-40 - dBr 2st side lobes(to fc ± 22MHZ) - -52/-33/-58 - dBr Freq. Tolerance -20/-20/-20 - 20/20/20 ppm Test Items Typical Value EVM 802.11b /11Mbps: 17dBm ± 1.
L287B-SR 2.2 5GHz RF Specification Feature Description WLAN Standard IEEE 802.11a/n/ac 1x1, Wi-Fi compliant Frequency Range 5.150 GHz ~ 5.850 GHz (5.0 GHz Band) Number of Channels 5.0GHz：Please see the table1 Test Items Typical Value EVM 802.11a /54Mbps: 15 dBm ± 1.5 dB EVM ≤ -25dB 802.11n /MCS7: 14 dBm ± 1.5 dB EVM ≤ -28dB 802.11ac VHT20/MCS8: VHT40/MCS9: VHT80/MCS9: 13 dBm ± 1.5 dB 13 dBm ± 1.5 dB 11 dBm ± 1.
L287B-SR 5550MHz~5700MHz 5745MHz~5825MHz FN-LINK TECHNOLOGY LIMITED 56 5280 60 5300 64 5320 100 5500 104 5520 108 5540 112 5560 116 5580 120 5600 124 5620 128 5640 132 5660 136 5680 140 5700 149 5745 153 5765 157 5785 161 5805 165 5825 6 Proprietary & Confidential Information
L287B-SR 3 Bluetooth Specification 3.1 Bluetooth Specification Feature Description General Specification Bluetooth Standard Bluetooth V5.0 Host Interface UART Antenna Reference Small antennas with 0~2 dBi peak gain Frequency Band 2402 MHz ~ 2480 MHz Number of Channels 79 channels Modulation GFSK, π/4-DQPSK,8DPSK RF Specification Min. Typical. Output Power (BR/LE) 10 dBm Output Power (EDR)Note1 7 dBm Sensitivity @ BER=0.1% for GFSK (1Mbps)Note2 -92dBm Sensitivity @ BER=0.
L287B-SR 4 Pin Assignments 4.1 Pin Outline < TOP VIEW > 4.
L287B-SR 4 GND － Ground connections 5 GND － Ground connections 6 GND － Ground connections 7 GND － Ground connections 8 GND － Ground connections 9 WL_ANT I/O RF I/O port for dual band Wi-Fi 10 GND － Ground connections 11 GND － Ground connections 12 NC － No connect 13 NC － No connect 14 NC － No connect 15 WL_RST I WLAN independent reset, internal pull up 1.8V 16 WL_WAKE_HOST O WLAN wake-up HOST, internal pull up 1.
L287B-SR 35 NC － No connect 36 VCC33 P Main power voltage source input 37 NC － No connect 38 BT_RST I Bluetooth independent reset, internal pull up 39 GND － Ground connections 40 UART_TXD O Bluetooth UART interface 1.8V 41 UART_RXD I Bluetooth UART interface 1.8V 42 UART_RTS_N O Bluetooth UART interface 1.8V 43 UART_CTS_N I Bluetooth UART interface 1.8V 44 PDn I Full Power-down, active low internal pull up 1.8V to 3.
L287B-SR 5 Dimensions 5.1 Module Picture L x W : 15 x 13 (+0.3/-0.1) mm H: 2.15 (±0.2) mm Weight 0.855g 5.
L287B-SR 5.
L287B-SR 5.
L287B-SR 6 Power-up Sequence and Timing Specification 6.1 Power-up sequence • • • • VDDIO must be good (90%) before or at the same time VCC33 starts ramping up. VDDIO must be good (90%) before or at the same time PDn starts ramping up. Ramp-up time of VDDIO must be <100 ms. All supplies must be monotonic. 6.
L287B-SR 6.3 SDIO SDR12, SDR25, SDR50 modes (up to 100 MHz) (1.
L287B-SR 6.4 SDIO SDR104 mode (208 MHz) (1.
L287B-SR 6.5 SDIO DDR50 mode (50 MHz) (1.
L287B-SR 6.
L287B-SR 6.
L287B-SR FN-LINK TECHNOLOGY LIMITED 20 Proprietary & Confidential Information
L287B-SR 7 Reference Design 8 Ordering Information Part No. Description FGL287BSRX-01 88W8987-A2-NYEE, a/b/g/n/ac, Wi-Fi, BT5.0, 1T1R, SDIO+UART, 2 Antenna version, PCB V2.
L287B-SR 9 The Key Material List Item Part Name Description Manufacturer 1 Inductor 2016 2.2uH,±20% Sunlord, Ceaiya, Cenker, TAIYO YUDEN 2 Diplexer 1608 Dual-band, dual-mode 2.4GHz/5GHz WLAN Glead, Walsin, ACX, Murata, MAG.LAYERS 3 Crystal 2016 38.4MHz ECEC, TKD, Hosonic, JWT, TXC 4 Chipset 88W8987-A2-NYEE NXP 5 PCB FR4, GREEN GDKX, Brain-power, Sunlord, Piotek 10 Recommended Reflow Profile Referred to IPC/JEDEC standard.
L287B-SR 11 Package Information 11.1 Reel A roll of 1500pcs 11.
L287B-SR 11.3 Packaging Detail 11.4 Moisture sensitivity The Modules is a Moisture Sensitive Device level 3, in according with standard IPC/JEDEC J-STD-020, take care all the relatives requirements for using this kind of components. Moreover, the customer has to take care of the following conditions: a) Calculated shelf life in sealed bag: 12 months at <40°C and <90% relative humidity (RH). b) Environmental condition during the production: 30°C / 60% RH according to IPC/JEDEC J-STD-033A paragraph 5.
天线测试报告 V1.0 联系方式: 13410505014 wangyuanjian@qinxinsz.com 357932305@qq.com 深圳勤新科技有限公司 射频: 刘工 日期: 2020.08.
目录 1 匹配电路 2 无源图 3 无源效率 4 天线图纸 5 6 深圳勤新科技有限公司
测试环境 • 天线特性使用ETS测试系统微波暗室，微波暗室尺寸7m x 4m x 3m ，测试频率700MHz---6GHz.
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3.无源效率 2.4-2.5GHz Freq Effi Effi Gain (MHz) (%) (dB) (dBi) 2400 36.65 -4.52 2.35 2410 35.79 -4.35 2.07 2420 35.46 -4.67 2.02 2430 37.56 -4.51 2.37 2440 38.27 -3.21 2.75 2450 40.45 -3.72 2.88 2460 42.16 -3.75 2.89 2470 42.71 -4.45 2.82 2480 39.54 -4.73 2.24 2490 38.78 -4.57 2.18 2500 37.68 -4.34 2.
深圳勤新科技有限公司
3.无源效率 5.15-5.85GHz Freq Effi Effi Gain (MHz) (%) (dB) (dBi) 5150 45.35 -4.52 1.29 5160 45.97 -4.44 1.46 5170 48.22 -4.18 1.56 5180 44.5 -4.62 1.41 5190 41.11 -5.07 1.55 5200 43.7 -4.72 1.17 5210 45.95 -4.44 1.12 5220 49.46 -4.04 1.55 5230 47.61 -4.25 1.26 5240 44.74 -4.59 1.09 5250 43.25 -4.78 1.21 5260 44.62 -4.61 1.23 5270 49.71 -4.01 1.67 5280 47.84 -4.22 1.48 5290 47.87 -4.22 1.58 5300 43.76 -4.72 1.19 5310 42.91 -4.83 1.
深圳勤新科技有限公司
深圳勤新科技有限公司
FCC Statement FCC standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 FPC Antenna , Antenna gain 2dBi This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
equipment generates, uses and can radiate radiofrequency energy and, if not installed and used in accordance with the instructions, may cause harmfulinterference to radio communications.However, there is no guarantee that interference will not occur in a particular installation.
