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RFM92W Schematic ( PDF Datasheet ) - HOPERF

Teilenummer RFM92W
Beschreibung (RFM92W / RFM93W) Low Power Long Range Transceiver Module
Hersteller HOPERF
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Gesamt 30 Seiten
RFM92W Datasheet, Funktion
RFM92W/93W
RFM92W/93W - Low Power Long Range Transceiver Module V1.0
GENERAL DESCRIPTION
The RFM92W/93W transceivers feature the LoRaTM long
range modem that provides ultra-long range spread
spectrum communication and high interference immunity
whilst minimising current consumption.
Using Hope RFs patented LoRaTM modulation technique
RFM92W/93W can achieve a sensitivity of over -137.5
dBm using a low cost crystal and bill of materials. The high
sensitivity combined with the integrated +20 dBm power
amplifier yields industry leading link budget making it
optimal for any application requiring range or robustness.
LoRaTM also provides significant advantages in both blocking
and selectivity over conventional modulation techniques,
solving the traditional design compromise between range,
interference immunity and energy consumption.
These devices also support high performance (G)FSK
modes for systems including WMBus, IEEE802.15.4g. The
RFM92W/93W deliver exceptional phase noise, selectivity,
receiver linearity and IIP3 for significantly lower current
consumption than competing devices.
RFM92W/93W
KEY PRODUCT FEATURES
APPLICATIONS
LoRaTM Modem.
157.5 dB maximum link budget.
+20 dBm - 100 mW constant RF output vs. V supply.
+14 dBm high efficiency PA.
Automated Meter Reading.
Home and Building Automation.
Wireless Alarm and Security Systems.
Industrial Monitoring and Control
Programmable bit rate up to 300 kbps.
High sensitivity: down to -137.5 dBm.
Bullet-proof front end: IIP3 = -12.5 dBm with FSK.
100 dB blocking immunity.
Low RX current of 10 mA, 100 nA register retention.
Fully integrated synthesizer with a resolution of 61 Hz.
FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
Built-in bit synchronizer for clock recovery.
Sync word recognition.
Preamble detection.
127 dB Dynamic Range RSSI.
Automatic RF Sense with ultra-fast AFC.
Packet engine up to 64 bytes with CRC.
Built-in temperature sensor and low battery indicator.
Module Size16*16mm.
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
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RFM92W Datasheet, Funktion
RFM92W/93W
Table 1. RFM92W/93W Device Variants and Key Parameters .................................................................................... 11
Table 2. Absolute Maximum Ratings ............................................................................................................................ 13
Table 3. Operating Range ............................................................................................................................................ 13
Table 4. Power Consumption Specification .................................................................................................................. 14
Table 5. Frequency Synthesizer Specification .............................................................................................................. 14
Table 6. Receiver Specification .................................................................................................................................... 15
Table 7. Transmitter Specification ................................................................................................................................ 16
Table 8. Digital Specification ........................................................................................................................................ 19
Table 9. Power Amplifier Mode Selection Truth Table ................................................................................................. 27
Table 10. High Power Settings ..................................................................................................................................... 28
Table 11. Operating Range, +20dBm Operation .......................................................................................................... 28
Table 12. Operating Range, +20dBm Operation .......................................................................................................... 28
Table 13. Trimming of the OCP Current ....................................................................................................................... 29
Table 14. LNA Gain Control and Performances ........................................................................................................... 30
Table 15. RssiSmoothing Options ................................................................................................................................ 32
Table 16. Available RxBw Settings ............................................................................................................................... 32
Table 17. Example LoRaTM Modem Performances ..................................................................................................... 36
Table 18. Range of Spreading Factors ......................................................................................................................... 38
Table 19. Cyclic Coding Overhead ............................................................................................................................... 38
Table 20. LoRaTM Operating Mode Functionality ........................................................................................................ 44
Table 21. IF Selection in LoRaTM Mode ...................................................................................................................... 45
Table 22. DIO Mapping LoRaTM Mode ........................................................................................................................ 52
Table 23. Bit Rate Examples ........................................................................................................................................ 53
Table 24. Preamble Detector Settings .......................................................................................................................... 59
Table 25. RxTrigger Settings to Enable Timeout Interrupts .......................................................................................... 60
Table 26. Basic Transceiver Modes ............................................................................................................................. 61
Table 27. Receiver Startup Time Summary .................................................................................................................. 62
Table 28. Receiver Startup Options ............................................................................................................................. 65
Table 29. Sequencer States ......................................................................................................................................... 67
Table 30. Sequencer Transition Options ...................................................................................................................... 68
Table 31. Sequencer Timer Settings ............................................................................................................................ 69
Table 32. Status of FIFO when Switching Between Different Modes of the Chip ......................................................... 73
Table 33. DIO Mapping, Continuous Mode .................................................................................................................. 75
Table 34. DIO Mapping, Packet Mode ......................................................................................................................... 75
Table 35. CRC Description .......................................................................................................................................... 83
Table 36. Registers Summary ...................................................................................................................................... 86
Table 37. Register Map ................................................................................................................................................ 89
Table 38. Crystal Specification ................................................................................................................................... 109
Table 39. Listen Mode with PreambleDetect Condition Settings ................................................................................ 112
Table 40. Listen Mode with PreambleDetect Condition Recommended DIO Mapping .............................................. 112
Table 41. Listen Mode with SyncAddress Condition Settings .................................................................................... 114
Table 42. Listen Mode with PreambleDetect Condition Recommended DIO Mapping .............................................. 115
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
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RFM92W pdf, datenblatt
1.4. Pin Description
Number
Name
Type
1 GND
2 MISO
3 MOSI
4 SCK
5 NSS
6 RESET
7 DIO5
8 GND
9 ANT
10 GND
11 DIO3
12 DIO4
13 3.3V
14 DIO0
15 DIO1
16 DIO2
-
I
O
I
I
I/O
I/O
-
-
-
I/O
I/O
-
I/O
I/O
I/O
RFM92W/93W
Description
Description Stand Alone Mode
Ground
SPI Data output
SPI Data input
SPI Clock input
SPI Chip select input
Reset trigger input
Digital I/O, software configured
Ground
RF signal output/input.
Ground
Digital I/O, software configured
Digital I/O, software configured
Supply voltage
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
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