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PDF SX1239 Data sheet ( Hoja de datos )
| Número de pieza | SX1239 | |
| Descripción | Low Power Integrated UHF Receiver | |
| Fabricantes | Semtech Corporation | |
| Logotipo |  |
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SX1239
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX1239 Receiver
Low Power Integrated UHF Receiver
RFIN
VBAT1&2
VR_ANA
VR_DIG
Power Distribution System
LNA
Single to
Differential
Mixers
Σ/Δ
Modulators
RC
Oscillator
RESET
SPI
Division by
2, 4 or 6
RSSI
AFC
GND
Tank
Inductor
Loop Frac-N PLL
NC Filter Synthesizer
NC
NC XO
32 MHz
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
XTAL
GENERAL DESCRIPTION
The SX1239 is a highly integrated RF receiver capable of
operation over a wide frequency range, including the 433,
868 and 915 MHz license-free ISM (Industry Scientific and
Medical) frequency bands. Its highly integrated architecture
allows for a minimum of external components whilst
maintaining maximum design flexibility. All major RF
communication parameters are programmable and most of
them can be dynamically set. The SX1239 offers the unique
advantage of programmable narrow-band and wide-band
communication modes without the need to modify external
components. The SX1239 is optimized for low power
consumption while offering high sensitivity and channelized
operation. TrueRF™ technology enables a lowcost external
component count (elimination of the SAW filter) whilst still
satisfying ETSI and FCC regulations.
APPLICATIONS
Automated Meter Reading
Wireless Sensor Networks
Home and Building Automation
Wireless Alarm and Security Systems
Industrial Monitoring and Control
GND
KEY PRODUCT FEATURES
High Sensitivity: down to -120 dBm at 1.2 kbps
High Selectivity: 16-tap FIR Channel Filter
Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm,
80 dB Blocking Immunity, no Image Frequency response
Low current: Rx = 16 mA, 100nA register retention
Constant RF performance over voltage range of chip
FSK Bit rates up to 300 kb/s
Fully integrated synthesizer with a resolution of 61 Hz
FSK, GFSK, MSK, GMSK and OOK demodulation
Built-in Bit Synchronizer performing Clock Recovery
Incoming Sync Word Recognition
115 dB+ Dynamic Range RSSI
Automatic RF Sense with ultra-fast AFC
Packet engine with CRC, AES-128 encryption and 66-
byte FIFO
Built-in temperature sensor and Low Battery indicator
ORDERING INFORMATION
MARKETS
Europe: EN 300-220-1
North America: FCC Part 15.247, 15.249, 15.231
Narrow Korean and Japanese bands
Part Number
SX1239IMLTRT
Delivery
Tape & Reel
MOQ / Multiple
3000 pieces
QFN 24 Package - Operating Range [-40;+85°C]
Pb-free, Halogen free, RoHS/WEEE compliant product
Rev 2 - April 2010
Page 1
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Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
SX1239
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Index of Figures
Page
Figure 1. Block Diagram ................................................................................................................................................ 8
Figure 2. Pin Diagram .................................................................................................................................................... 9
Figure 3. Marking Diagram ............................................................................................................................................ 9
Figure 4. TCXO Connection ........................................................................................................................................ 15
Figure 5. Receiver Block Diagram ............................................................................................................................... 17
Figure 6. AGC Thresholds Settings ............................................................................................................................. 19
Figure 7. Cordic Extraction .......................................................................................................................................... 22
Figure 8. OOK Peak Demodulator Description ............................................................................................................ 24
Figure 9. Floor Threshold Optimization ....................................................................................................................... 25
Figure 10. Bit Synchronizer Description ...................................................................................................................... 26
Figure 11. FEI Process ................................................................................................................................................ 27
Figure 12. Optimized Afc (AfcLowBetaOn=1) .............................................................................................................. 28
Figure 13. Temperature Sensor Response ................................................................................................................. 29
Figure 14. Rx Startup - No AGC, no AFC .................................................................................................................... 31
Figure 15. Rx Startup - AGC, no AFC ......................................................................................................................... 31
Figure 16. Rx Startup - AGC and AFC ........................................................................................................................ 31
Figure 17. Listen Mode Sequence (no wanted signal is received) .............................................................................. 33
Figure 18. Listen Mode Sequence (wanted signal is received) ................................................................................... 35
Figure 19. Auto Modes of Packet Handler ................................................................................................................... 36
Figure 20. SX1239 Data Processing Conceptual View ............................................................................................... 37
Figure 21. SPI Timing Diagram (single access) .......................................................................................................... 38
Figure 22. FIFO and Shift Register (SR) ..................................................................................................................... 39
Figure 23. FifoLevel IRQ Source Behavior .................................................................................................................. 40
Figure 24. Sync Word Recognition .............................................................................................................................. 41
Figure 25. Continuous Mode Conceptual View ........................................................................................................... 43
Figure 26. Rx Processing in Continuous Mode ........................................................................................................... 43
Figure 27. Packet Mode Conceptual View ................................................................................................................... 44
Figure 28. Fixed Length Packet Format ...................................................................................................................... 45
Figure 29. Variable Length Packet Format .................................................................................................................. 46
Figure 30. Unlimited Length Packet Format ................................................................................................................ 46
Figure 31. CRC Implementation .................................................................................................................................. 50
Figure 32. Manchester Decoding ................................................................................................................................ 50
Figure 33. Data De-Whitening ..................................................................................................................................... 51
Figure 34. POR Timing Diagram ................................................................................................................................. 66
Figure 35. Manual Reset Timing Diagram ................................................................................................................... 67
Figure 36. Application Schematic ................................................................................................................................ 67
Figure 37. Package Outline Drawing ........................................................................................................................... 68
Figure 38. Recommended Land Pattern ..................................................................................................................... 68
Figure 39. Tape & Reel Specification .......................................................................................................................... 69
Figure 40. Listen Mode Resolutions, V2a ................................................................................................................... 70
Figure 41. Listen Mode Resolution, V2b ..................................................................................................................... 70
Rev 2 - April 2010
Page 5
www.semtech.com
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
SX1239
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
2. Electrical Characteristics
2.1. ESD Notice
The SX1239 is a high performance radio frequency device.
Class 2 of the JEDEC standard JESD22-A114-B (Human Body Model) on all pins.
Class B of the JEDEC standard JESD22-A115-A (Machine Model) on all pins.
Class IV of the JEDEC standard JESD22-C101C (Charged Device Model) on pins 2-3-21-23-24, Class III on all other pins.
It should thus be handled with all the necessary ESD precautions to avoid any permanent damage.
2.2. Absolute Maximum Ratings
Stresses above the values listed below may cause permanent device failure. Exposure to absolute maximum ratings for
extended periods may affect device reliability.
Table 2 Absolute Maximum Ratings
Symbol
VDDmr
Tmr
Tj
Pmr
Supply Voltage
Temperature
Junction temperature
RF Input Level
Description
Min Max Unit
-0.5 3.9 V
-55
+115
°C
-
+125
°C
- +6 dBm
2.3. Operating Range
Table 3 Operating Range
Symbol
VDDop
Top
Clop
ML
Description
Supply voltage
Operational temperature range
Load capacitance on digital ports
RF Input Level
Min Max Unit
1.8 3.6 V
-40 +85 °C
- 25 pF
- 0 dBm
Rev 2 - April 2010
Page 11
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Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet SX1239.PDF ] | |
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