Host Controller Interface (HCI) via USB Interface
LM822 WiFi 802.11 b/g/n Module with IC Antenna
Product
Part No
Revised
Datasheet Version
LM822
See Last Page
04/JUL/2018
1.3
OSX
XP
Vista
7
8
10
IoT
CE
6
CE
7
Also available with IPEX Receptical (LM823)
Features
WiFi 802.11 b/g/n
Operates in 2.4 GHz Frequency bands
Onboard Chip Antenna
Plug and Play (Linux, macOS X, Windows XP – 10, Windows 10 IoT Core
and Windows Compact Embedded 6/7 compatible)
Up to 150Mbps Data Transfer Rate
802.11e-compatible bursting and I standards
BPSK, QPSK, 16 QAM and 64 QAM modulation schemes
WEP, TKIP, and AES, WPA and WPA2 encryption schemes
Fully-featured software utility for easy configuration and management
RoHS, REACH and WEEE compliant
See our website for this products certifications.
Optional Features
DC power input 3.3V or 5V
WPS or PDN control function on half-hole pin 6
Support LED function when choose WPS option
Overview
The LM822 WiFi USB module fully supports the IEEE 802.11 b, g and n standards.
It supports up to 150Mbps high-speed wireless network connections and is designed to provide excellent performance with low power
consumption.
It is designed to be a highly cost-e ective module that o ers superior performance, better power management applications above its
competitors.
Antenna Option - IPEX
This module is also o ered with an IPEX receptical for increased range and for placing the module
in a di erent location to the selected antenna. Please speak with our team for guidance when looking at this option.
LM822
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Host Controller Interface (HCI) via USB Interface
General Specification
Wireless
Wireless Standard
Module Type
OS Compatibility
LM822 WiFi 802.11 b/g/n Module with IC Antenna
Product
Part No
LM822
See Last Page
802.11 b/g/n, 802.3, and 802.3u
Host Controller Interface (HCI)
Linux, macOS X, Windows XP – 10, Windows 10 IoT Core and
Windows Embedded Compact 6/7
Security
Network Architecture
WEP, TKIP, AES, WPA and WPA2
Ad hoc mode (Peer-to-Peer) and Infrastructure mode (supported on Linux and
Windows 8.1 or earlier)
Hardware
Chipset
Antenna
Interfaces
Realtek
Onboard Chip Antenna
USB 2.0 (Full Speed)
RF Characteristics
Tx Output Power
Rx Sensitivity
Range (in open space)
Current Consumption (DC 5V Module)
(+/- 2dBm): 13dBm@11n, 17dBm@11b, 15dBm@11g
11Mbps -80dBm@8%, 54Mbps -70dBm@10%,130Mbps -64dBm@10%
Up to 180m
Transmit: 125 mA (Maximum)
Receive: max 105 mA DC (Maximum)
Current Consumption (DC 3V3 Module)
Transmit: max. 172 mA (Maximum)
Receive: max 139 mA (Maximum)
Data Transfer Rate
Frequency
Modulation Scheme
Spread Spectrum
1,2,5.5,6,11,12,18,22,24,30,36,48,54,60,90,120 Mbps to a maximum of 150Mbps
2.4GHz ISM Band
BPSK/ QPSK/ 16-QAM/ 64-QAM
IEEE 802.11b: DSSS (Direct Sequence Spread Spectrum)
IEEE 802.11g/n: OFDM (Orthogonal Frequency Division Multiplexing)
Physical Characteristics
Operating Temperature
Humidity
Dimensions (L x W x H)
Weight
Certifications
Compliance
-20°C to +85°C ambient temperature
5% to 90% maximum (non-condensing)
25mm x 12mm x 2mm (+/- 0.2mm)
1.03g +/- 0.25g tolerance
See our website for this products certifications.
RoHS, REACH and WEEE
LM822
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Host Controller Interface (HCI) via USB Interface
LM822 WiFi 802.11 b/g/n Module with IC Antenna
Product
Part No
LM822
See Last Page
Pin Outs
9 - GND
8 - RF
7 - GND
6 - WPS or PDN
5 - VCC
4 - USB D-
3 - USB D+
2 - GND
1 - LED out
DC Power Input
Module
DC 5V
DC 3.3V
Min
4.75
3.135
Typical
5
3.3
Max
5.25
Unit
V
3.465 V
Pin Assignments
Pin
1
2
3
4
5
6
7
8
9
Pin Name
LED out
GND
USB D+
USB D-
VCC
WPS or PDN
GND
RF
GND
Type
Output
Ground
I/O
I/O
Power
I/O
Ground
-
Ground
Description
LED output
Common Ground
USB D+
USB D-
DC Power Supply (Refer to DC Power Input table)
WiFi Protected Setup switch or Power Down switch (factory option)
Common Ground
Do not connect
Common Ground
LM822
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Host Controller Interface (HCI) via USB Interface
LM822 WiFi 802.11 b/g/n Module with IC Antenna
Product
Part No
LM822
See Last Page
Module Block Diagram
ANT
VCC
Filter
BT_RF
USB D-
Realtek Chipset
USB D+
GND
XTAL
LM822
40MHz
LM822
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USB Interface
Host Controller Interface (HCI) via USB Interface
PCB Footprint
1mm 1mm
LM822 WiFi 802.11 b/g/n Module with IC Antenna
Product
Part No
LM822
See Last Page
2mm 1mm
1.4mm
1.5mm
1.5mm
0.9mm
1mm
2mm
2mm
2mm
12mm
6.5mm
No
Grounding
2mm
0.9mm
2mm
1mm
7.4mm
25mm
3.3V
1
LED
The external circuit for WiFi activity LED (factory option)
2
560 ohms
LED out
3.3V
WPS Switch
2
1
1
10K ohms
WPS (GPIO2)
The function of pin 6 is optional to WPS (GPIO2) or
power-down (GPIO11), a factory option.
The external circuit for WPS function input
(factory option), uses a tact switch.
1nF
Power down switch
1
The external circuit power-down function input
(factory option) uses a push or toggle switch.
2
PDN (GPIO11)
R1 100 ohms
LM822
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