Data Sheet

XCVR Block Diagram (2 x RF Half Hole Line Out)
XCVR Block Diagram (2 x IPEX Antennas)
Part No
Product LM843
LM843 WiFi 802.11ac / Bluetooth® 5.0 2T2R Combi USB Module
XCVR SMT USB Module
LM843
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Page 8 of 12
Extended Temperature Range
Our SMT Module Low Tempreature Product Update is changing a 0c rated product into a -20c rated product.
In this update we ensure all items in the BOM except the main IC, are components rated at -40c, the Realtek IC is made from material
tested and approved for -30c, rated at 0 due to a range of factors, such as low demand for -40 compliance, cost of -40c rated material
is approved and tested at -60c and is expensive to manage.
Our products undergo an intensive test regime within which we temperature test and conduct a range of functions via our test
program continuously for 72 hours at -40c, -20x 0c and 20c. If during this test we see no gradual drop o in performance and any
initial drop o is less than 15% we will then pass the product as approved to support -20c.
We provide warranty on all LM843 -20c products for 2 years.
See Last Page
Tx / Rx
DPX
WiFi
Tx / Rx
DPX
BT / WiFi
Line Out
IPEX
Antenna
OTP
3.3V
8822CU
2.4GHz & 5GHz
XTAL
40MHz
2.4GHz & 5GHz
HOST INTERFACE
USB 2.0 CONNECTOR
Line Out
OTP
3.3V
RF_0
RF_1
RF_0
RF_1
8822CU
XTAL
40MHz
HOST INTERFACE
USB 2.0 CONNECTOR
Tx / Rx
DPX
WiFi
Tx / Rx
DPX
BT / WiFi
IPEX
Antenna