SX1239IMLTRT Semtech, SX1239IMLTRT Datasheet - Page 51

• Manufacturer Part Number: SX1239IMLTRT
• Description: IC, RF RECEIVER, 1.02GHz, QFN-24
• Manufacturer: Semtech

Specifications of SX1239IMLTRT

• Applications: Wireless Sensor Networks, Automated Meter Reading, Home And Building Automation
• Receiving Current: 16mA
• Data Rate: 300Kbps
• Modulation Type: FSK, OOK
• Sensitivity Dbm: -120dBm
• Rohs Compliant: Yes
• Rf Ic Case Style: QFN
• No. Of Pins: 24
• Sensitivity (dbm): -120dBm
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / Rohs Status: Supplier Unconfirmed

SX1239
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
The de-whitening process is enabled if DcFree = 10. The data, including payload and 2-byte CRC checksum, is de-
whitened by XORing it with a random sequence generated in a 9-bit LFSR, shown in Figure 33.
Payload de-whitening is thus made transparent for the user, who still retrieves NRZ data from the FIFO.
De-whitened Data
Received Data
Figure 33. Data De-Whitening
Rev 3 - Jan 2011
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