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User Manual
Product Label:
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MODEL: A28188E
1.Overview ：
A28188E is a WLAN 11n USB module, which fully supports
the features and Functional compliance of IEEE 802.11n,e and i
standards.
It supports up to 150Mbps high-speed wireless network
connections.
It is designed to provide excellent performance with low
power Consumption and enhance the advantages of robust
system and cost-effective.
It is targeted at competitive superior performance, better
power Management applications.
2. Features
General
■5-pin Stamp hole
■CMOS MAC, Baseband PHY, and RF in a
■single chip for IEEE 802.11b/g/n compatible
WLAN
■Complete 802.11n solution for 2.4GHz band
■72.2Mbps receive PHY rate and 72.2Mbps
transmit PHY rate using 20MHz bandwidth
■150Mbps receive PHY rate and 150Mbps
transmit PHY rate using 40MHz bandwidth
■ Compatible with 802.11n specification
■ Backward compatible with 802.11b/g
devices while operating in 802.11n mode
Interface
■Complies with USB 1.0/1.1/2.0 for WLAN
Standards Supported
■IEEE 802.11b/g/n compatible WLAN
■IEEE 802.11e QoS Enhancement (WMM)
■802.11i (WPA, WPA2). Open, shared key,
and pair-wise key authentication services
WLAN MAC Features
■Frame aggregation for increased MAC
efficiency (A-MSDU, A-MPDU)
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■Low latency immediate High-Throughput
Block Acknowledgement (HT-BA)
■ PHY-level spoofing to enhance legacy
compatibility
■ Power saving mechanism
■ Channel management and co-existence
■Transmit Opportunity (TXOP) Short
Inter-Frame Space (SIFS) bursting for
higher multimedia bandwidth
WLAN PHY Features
IEEE 802.11n OFDM
■ One Transmit and one Receive path (
1T1R)
■20MHz and 40MHz bandwidth transmission
■Short Guard Interval (400ns)
■DSSS with DBPSK and DQPSK, CCK
modulation with long and short preamble
■OFDM with BPSK, QPSK, 16QAM, and
64QAM modulation.
Convolutional Coding Rate:1/2,2/3,3/4,and 5/6
■Maximum data rate 54Mbps in 802.11g and
150Mbps in 802.11n
■Hardware antenna diversity in per packet
base
■Selectable receiver FIR filters
■Programmable scaling in transmitter and
receiver to trade quantization noise against
increased probability of clipping
■Fast receiver Automatic Gain Control
(AGC)
■ On-chip ADC and DAC
Application Diagram
MODEL: A28188E
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General Specification
Model A28188E
Product Name WLAN 11n USB 1T1R module
Major Chipset R
TL8188ETV
Standard 802.1
1b/g/n-ht20/n-ht40,802.3,802.3u
DataTr
ansfer
Rate
1,2,5.5,6,11,12,18,22,24,30,36,48,54,60,90,
120 and maximum of 150Mbps
Modulation
Method
CCK/BPSK/ QPSK/ 16-QAM/ 64-QAM
Frequency
Range
2.402~2.480 GHz
Spread
Spectrum
IEEE802.1
1b:DSSS(Direct Sequence
Spread Spectrum) IEEE802.11g/n:OFDM
(Orthogonal Frequency Division
Multiplexing)
Hardware
Version
V0 ，
Software
Version
V1.1
Receiver
Sensitivity
1
1Mbps-86dBm@8%,54Mbps
-73dBm@10%,130Mbps，-66dBm@10%
Operation
Range
Up to 180 meters in open space
MODEL: A28188E
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LED NO
OS Support Windows 2000,XP
32-64,Vista 32/64,Win7
32/64,Linux,Mac, Android，WIN CE
Security WEP, TKIP
, AES, WPA, WPA2
Interface USB 2.0
Power
Consumption
DC 5V Maximum power dissipation in 60mA
Operating
Temperature
-10~+60° C ambient temperature
Storage
Temperature
-20~70°C ambient temperature
Humidity 5 to 90% maximum (non-condensing)
Dimension 35.35 x12.35x0.8mm(LxWxH)+/-0.2mm
External antenna reference design
This part needs to be done 50R the impedance of the
LAYOUT of the line is a straight line or curve, and not more than
20 mm if you want to do is compatible with the wrapping as far
as possible don't have feedback.
Antenna Specification: IPEX Connector, Monopole Antenna, 2dBi
DC Characteristics
Power Consumption
MODEL: A28188E
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Parameters Conditions Typ Unit
11Mbps 145
mA
54Mbps 145 mA
65Mbps 145 mA
Receiving Tests the
biggest receive
135Mbps 145 mA
11Mbps 310
mA
54Mbps 225 mA
65Mbps 225 mA
Transmission
Biggest
transmission
test
135Mbps 200 mA
The depth waits for
an opportunity
5 mA
Deep sleep 5 mA
Browse the
webcurrent
145 mA
High-definition
current
165 mA
USB interface electrical characteristics
MODEL: A28188E
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Pin Description
Matters needing attention before patch installed the WIFI
module
1.the customer must be at the time of open stencil will solder
hole up WIFI module, please press 1 to 1
0.7 mm is widened to open outward again, according to the
thickness of 0.12 mm.
2.the WIFI module before launch patch must bake for 12 hours,
the temperature at 120 degrees
+/- 5 degrees.
3.baking advice online immediately after OK, don't after a
baking OK will all WIFI module
Block out of baking box. How many Suggestions posted how
much per hour.
4.there is need to get the WIFI module must not be light to get
WIFI module, be sure to wear
On the gloves and static ring.
MODEL: A28188E
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5.a furnace temperature according to the size of the customer
the mainboard, generally like to stick on the tablet 250 +/-5
degrees.
PCB size
MODEL: A28188E
FCC
Statment
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.
Note: The manufacturer is not responsible for any radio or TV interference caused
by unauthorized modifications to this equipment. such modifications could void the
user’s authority to operate this equipment.Any Changes or modifications not
expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
--Reorient or relocate the receiving antenna.
--Increase the separation between the equipment and receiver.
--Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
--Consult the dealer or an experienced radio/TV technician for help.
RF warning statement
The device has been evaluated to meet general RF exposure requirement. The
device can be used in Mobile exposure condition with a 20cm distance restriction.
The modular can be installed or integrated in mobile or fix devices only. This modular
cannot be installed in any portable device, for example, USB dongle like transmitters
is forbidden.
Co-location statement
This device and its antenna(s) must not be co-located or operating in conjunction
with any other antenna or transmitter.
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This modu
lar complies with FCC RF radiation exposure limits set forth for an
uncontrolled environment. This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.
If the FCC identification number is not visible when the module is installed inside
another device, then the outside of the device into which the module is installed
must also display a label referring to the enclosed module. This exterior label can use
wording such as the following: “Contains FCC ID: 2AHXS-A28188E ”
when the module is installed inside another device, the user manual of this device
must contain below warning statements;
1. 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.
(2) This device must accept any interference received, including interference that
may cause undesired operation.
2. Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
The devices must be installed and used in strict accordance with the manufacturer's
instructions as described in the user documentation that comes with the product.
Any company integrating that module into another host device is required to pass a
FCC Class 2 Permissive Change procedure or separate FCC Certification which essentially
need to include RF Exposure evaluation.
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