Feature and application:

Using Hope RF’s patented LoRaTM modulation technique RFM95W can achieve a sensitivity of over -148dBm 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 RFM95W delivers exceptional phase noise, selectivity, receiver linearity and IIP3 for significantly lower current consumption than competing devices.

Features:

• LoRaTM Modem.

• 168 dB maximum link budget.

• +20 dBm - 100 mW constant RF output vs. V supply.

• +14 dBm high-efficiency PA.

• Programmable bit rate up to 300 kbps.

• High sensitivity: down to -148 dBm.

• Bullet-proof front end: IIP3 = -12.5 dBm.

• Excellent blocking immunity.

• Low RX current of 10.3 mA, 200 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.

• Preamble detection.

• 127 dB Dynamic Range RSSI.

• Automatic RF Sense and CAD with ultra-fast AFC.

• Packet engine up to 256 bytes with CRC.

• Built-in temperature sensor and low battery indicator.

• Module Size：16*16mm

Applications:

• Automated Meter Reading.

• Home and Building Automation.

• Wireless Alarm and Security Systems.

• Industrial Monitoring and Control

• Long-range Irrigation Systems

Block Diagram:

Pin diagram:

Pin Description:

Number	Name	Type	Description Stand-Alone Mode
1	GND	-	Ground
2	MISO	O	SPI Data output
3	MOSI	I	SPI Data input
4	SCK	I	SPI Clock input
5	NSS	I	SPI Chip select input
6	RESET	I	Reset trigger input
7	DIO5	I/O	Digital I/O, software configured
8	GND	-	Ground
9	ANT	-	RF signal output/input.
10	GND	-	Ground
11	DIO3	I/O	Digital I/O, software configured
12	DIO4	I/O	Digital I/O, software configured
13	3.3V	-	Supply voltage
14	DIO0	I/O	Digital I/O, software configured
15	DIO1	I/O	Digital I/O, software configured
16	DIO2	I/O	Digital I/O, software configured

Electrical characteristics:

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.

Symbol	Description	Min	Max	Unit
VDDmr	Supply Voltage	-0.5	3.9	V
Tmr	Temperature	-55	+115	° C
Tj	Junction temperature	-	+125	° C
Pmr	RF Input Level	-	+6	dBm

Operating range:

Symbol	Description	Min	Max	Unit
VDDop	Supply voltage(1.8V-2.4V 17dBm, 2.4V- 3.6V 20dBm)	1.8	3.7	V
Top	Operational temperature range	-20	+70	°C
Clop	Load capacitance on digital ports	-	25	pF
ML	RF Input Level	-	+10	dBm

Chip specification:

          The tables below give the electrical specifications of the transceiver under the following conditions: Supply voltage VDD=3.3 V, temperature = 25 °C, FXOSC= 32 MHz, F_RF= 169/434/868/915 MHz (see specific indication), Pout =+13dBm, 2-level FSK modulation without pre-filtering, FDA = 5 kHz, Bit Rate = 4.8 kb/s and terminated in a matched 50 Ohm impedance, shared Rx and Tx path matching. unless otherwise specified.

Power consumption:

Symbol	Description	Conditions	Min	Typ	Max	Unit
IDDSL	Supply current in Sleep mode		-	0.2	1	uA
IDDIDLE	Supply current in Idle mode	RC oscillator enabled	-	1.5	-	uA
IDDST	Supply current in Standby mode	Crystal oscillator enabled	-	1.6	1.8	mA
IDDFS	Supply current in Synthesizer mode	FSRx	-	5.8	-	mA
IDDR	Supply current in Receive mode	LnaBoostOff, higher bandsLnaBoostOn, higher bands Lower bands	- - -	10.8 11.5 12.1	- - -	mA
IDDT	Supply current in Transmit mode with impedance matching	RFOP = +20 dBm, on PA_BOOST RFOP = +17 dBm, on PA_BOOST RFOP = +13 dBm, on RFO_LF/HF pin RFOP = + 7 dBm, on RFO_LF/HF pin	- - - -	120 87 29 20	- - - -	mA mA mA mA

Frequency synthesis:

Symbol	Description	Conditions	Min	Typ	Max	Unit
FR	Synthesizer frequency range	Programmable	137 410 862	- - -	175 525 1020	MHz
FXOSC	Crystal oscillator frequency		-	32	-	MHz
TS_OSC	Crystal oscillator wake-up time		-	250	-	us
TS_FS	Frequency synthesizer wake-up time to PllLock signal	From Standby mode	-	60	-	us
TS_HOP	Frequency synthesizer hop time at most 10 kHz away from the target the frequency	200 kHz step 1 MHzstep 5 MHzstep 7 MHzstep 12 MHzstep 20 MHzstep 25 MHzstep	- - - - - - -	20 20 50 50 50 50 50	- - - - - - -	us us us us us us us
FSTEP	Frequency synthesizer step	FSTEP = FXOSC/219	-	61.0	-	Hz
FRC	RC Oscillator frequency	After calibration	-	62.5	-	kHz
BRF	Bit rate, FSK	Programmable values (1)	1.2	-	300	kbps
BRO	Bit rate, OOK	Programmable	1.2	-	32.768	kbps
BRA	Bit Rate Accuracy	ABS(wanted BR - available BR)	-	-	250	ppm
FDA	Frequency deviation, FSK (1)	Programmable FDA + BRF/2 =< 250 kHz	0.6	-	200	kHz

FSK/OOK Mode Receiver:

       All receiver tests are performed with RxBw = 10 kHz (Single Side Bandwidth) as programmed inRegRxBw, receiving a PN15 sequence. Sensitivities are reported for a 0.1% BER (with Bit Synchronizer enabled) unless otherwise specified. Blocking tests are performed with an unmodulated interferer. The wanted signal power for the Blocking Immunity, ACR, IIP2, IIP3 and AMR tests is set 3 dB above the receiver sensitivity level.

Symbol	Description	Conditions	Min	Typ	Max	Unit
RFS_F_LF	The direct tie of RFI and RFO pins, shared Rx, Tx paths FSK sensitivity, highest LNA gain. Lower frequency bands	FDA = 5 kHz, BR = 1.2 kb/s FDA = 5 kHz, BR = 4.8 kb/s FDA = 40 kHz, BR = 38.4 kb/s* FDA = 20 kHz, BR = 38.4 kb/s** FDA = 62.5 kHz, BR = 250kb/s***	- - - - -	-121 -117 -107 -108 -95	- - - - -	dBm dBm dBm dBm dBm
	Split RF paths, the RF switch insertion loss is not accounted for. Lower frequency bands	FDA = 5 kHz, BR = 1.2 kb/s FDA = 5 kHz, BR = 4.8 kb/s FDA = 40 kHz, BR = 38.4 kb/s* FDA = 20 kHz, BR = 38.4 kb/s** FDA = 62.5 kHz, BR = 250kb/s***	- - - - -	-123 -119 -109 -110 -97	- - - - -	dBm dBm dBm dBm dBm
RFS_F_HF	The direct tie of RFI and RFO pins, shared Rx, Tx paths FSK sensitivity, highest LNA gain. Higher frequency bands	FDA = 5 kHz, BR = 1.2 kb/s FDA = 5 kHz, BR = 4.8 kb/s FDA = 40 kHz, BR = 38.4 kb/s* FDA = 20 kHz, BR = 38.4 kb/s** FDA = 62.5 kHz, BR = 250kb/s***	- - - - -	-119 -115 -105 -105 -92	- - - - -	dBm dBm dBm dBm dBm
	Split RF paths, LnaBoost is turned on, the RF switch insertion loss is not accounted for higher frequency bands	FDA = 5 kHz, BR = 1.2 kb/s FDA = 5 kHz, BR = 4.8 kb/s FDA = 40 kHz, BR = 38.4 kb/s* FDA = 20 kHz, BR = 38.4 kb/s** FDA = 62.5 kHz, BR = 250kb/s***	- - - - -	-123 -119 -109 -109 -96	- - - - -	dBm dBm dBm dBm dBm
RFS_O	OOK sensitivity, highest LNA gain shared Rx, Tx paths	BR = 4.8 kb/s BR = 32 kb/s	- -	-117 -108	- -	dBm dBm
CCR	Co-Channel Rejection		-	-9	-	dB
ACR	Adjacent Channel Rejection	FDA = 5 kHz, BR=4.8kb/s Offset = +/- 25 kHz or +/- 50kHz 169MHzBand 434 MHzBand 8-900 MHzBand	- - -	59 56 50	- - -	dB dB dB
BI_HF	Blocking Immunity, higher bands	Offset = +/- 1 MHz Offset = +/- 2 MHz Offset = +/- 10 MHz	- - -	71 76 84	- - -	dB dB dB