SX1239IMLTRT Semtech, SX1239IMLTRT Datasheet - Page 2

• 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

Table of Contents
1.
2.
3.
Rev 3 - Jan 2011
ADVANCED COMMUNICATIONS & SENSING
1.1.
1.2.
1.3.
2.1.
2.2.
2.3.
2.4.
3.1.
3.2.
3.3.
3.4.
General Description ................................................................................................................................................ 8
Electrical Characteristics....................................................................................................................................... 11
Chip Description.................................................................................................................................................... 15
2.4.1. Power Consumption ................................................................................................................................. 12
2.4.2. Frequency Synthesis ................................................................................................................................ 12
2.4.3. Receiver ................................................................................................................................................... 13
2.4.4. Digital Specification .................................................................................................................................. 14
3.3.1. Reference Oscillator ................................................................................................................................. 15
3.3.2. CLKOUT Output ........................................................................................................................................16
3.3.3. PLL Architecture ....................................................................................................................................... 16
3.3.4. Lock Time ..................................................................................................................................................17
3.3.5. Lock Detect Indicator................................................................................................................................ 17
3.4.1. Block Diagram .......................................................................................................................................... 17
3.4.2. LNA - Single to Differential Buffer .............................................................................................................18
3.4.3. Automatic Gain Control ............................................................................................................................ 18
3.4.4. Continuous-Time DAGC........................................................................................................................... 20
3.4.5. Quadrature Mixer - ADCs - Decimators.................................................................................................... 20
3.4.6. Channel Filter ........................................................................................................................................... 20
3.4.7. DC Cancellation ....................................................................................................................................... 21
3.4.8. Complex Filter - OOK ............................................................................................................................... 22
3.4.9. RSSI ......................................................................................................................................................... 22
3.4.10. Cordic ..................................................................................................................................................... 22
3.4.11. Bit Rate Setting ...................................................................................................................................... 22
3.4.12. FSK Demodulator ................................................................................................................................... 23
3.4.13. OOK Demodulator ...................................................................................................................................24
3.4.14. Bit Synchronizer ......................................................................................................................................26
3.4.15. Frequency Error Indicator....................................................................................................................... 26
3.4.16. Automatic Frequency Correction ............................................................................................................ 27
3.4.17. Optimized Setup for Low Modulation Index Systems ............................................................................. 28
Simplified Block Diagram ................................................................................................................................ 8
Pin and Marking Diagram................................................................................................................................ 9
Pin Description .............................................................................................................................................. 10
ESD Notice.................................................................................................................................................... 11
Absolute Maximum Ratings .......................................................................................................................... 11
Operating Range........................................................................................................................................... 11
Chip Specification ......................................................................................................................................... 12
Power Supply Strategy.................................................................................................................................. 15
Low Battery Detector..................................................................................................................................... 15
Frequency Synthesis..................................................................................................................................... 15
Receiver Description ..................................................................................................................................... 17
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