Laird Technologies APEXLT User Manual

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APEX LT PRODUCT SUMMARY 
 
Product Description 
The LS Research APEX LT module is a 2.4 GHz transceiver providing a solution for data 
links and wireless networks.  The module is based on the Ember EM260 network processor 
providing an IEEE 802.15.4 radio transceiver with a SPI base interface.  The SPI interface 
gives the flexibility to choose the external microprocessor to best fit the application. 
 
Key Features 
•  100 mW output power 
•  Integrated antenna 
•  Supports MMCX connector for external antenna 
•  16 RF channels (Channel 16 at a reduced power level) 
•  Output power is software controlled 
•  AES-128 encryption 
•  Constant RF output power over operating voltage range of 2.1 – 3.6V 
•  Integrated IEEE 802.15.4 PHY and MAC 
•  Dedicated network processor 
•  SPI-slave or UART interface to application microprocessor 
•  Handles all data processing and timing intensive tasks of Zigbee protocol 
 
Specifications 
Operating voltage range: 
2.1 – 3.6 V 
RF Frequency range:   
2400 – 2483.5 MHz 
RF Data rate:   
 
250 kbps 
Nominal output power: 
100 mW (20 dBm) 
Transmitter current: 
 
170 mA 
Receive current: 
 
37 mA 
Error Vector Magnitude 
15% typical 
Receiver Sensitivity 
 
-96 dBm (1% PER) 
 
I/O Summary 
•  Connection to the API is made over SPI to allow application development on host 
microprocessor. 
•  Two additional signals (nHOST_INT and nWAKE) provided for handshaking. 
•  Module is a slave device only.  All transactions are initiated by the host.