RFM97W-868S2 datasheet(9/121 Pages) ETC2

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RFM97W-868S2 Datasheet(PDF) 9 Page - List of Unclassifed Manufacturers

Part #	RFM97W-868S2

Description	Low Power Long Range Transceiver Module

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Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http:// www.hoperf.com

RFM95/96/97/98(W)

WIRELESS & SENSING

PRELIMINARY

DATASHEET

1. General Description

The RFM95/96/97/98(W) incorporates the LoRaTM spread spectrum modem which is capable of achieving significantly

longer range than existing systems based on FSK or OOK modulation. With this new modulation scheme sensitivities 8 dB

better than FSK can be achieved with a low-cost, low-tolerance, crystal reference. This increase in link budget provides

much longer range and robustness without the need for external amplification. LoRaTM also provides significant

advances in selectivity and blocking performance, further improving communication reliability. For maximum flexibility the

user may decide on the spread spectrum modulation bandwidth (BW), spreading factor (SF) and error correction rate (CR).

Another benefit of the spread modulation is that each spreading factor is orthogonal - thus multiple transmitted signals can

occupy the same channel without interfering. This also permits simple coexistence with existing FSK based systems.

Standard GFSK, FSK, OOK, and GMSK modulation is also provided to allow compatibility with existing systems or

standards such as wireless MBUS and IEEE 802.15.4g.

The RFM97 offers bandwidth options ranging from 7.8 kHz to 500 kHz with spreading factors ranging from 6 to 12, and

covering all available frequency bands. The RFM97 offers the same bandwidth and frequency band options with

spreading factors from 6 to 9. The RFM98 offers bandwidths and spreading factor options, but only covers the lower UHF

bands.

1.1. Simplified Block Diagram

Figure 1. Block Diagram

Manufacturer	Part #	Datasheet	Description
HOPE Microelectronics C...	RFM97W-868S2	1Mb / 121P	Low Power Long Range Transceiver Module

Manufacturer	Part #	Datasheet	Description
HOPE Microelectronics C...	RFM95	1Mb / 121P	Low Power Long Range Transceiver Module
List of Unclassifed Man...	RFM92W-868S2	2Mb / 126P	Low Power Long Range Transceiver Module
HOPE Microelectronics C...	RFM92W	4Mb / 123P	Low Power Long Range Transceiver Module V1.0
HOPE Microelectronics C...	RFM93W	4Mb / 126P	Low Power Long Range Transceiver Module V2.0
Microchip Technology	RN2903	1Mb / 24P	Low-Power Long Range LoRa Technology Transceiver Module 07/14/15
	RN2483	1Mb / 20P	Low-Power Long Range LoRa짰 Technology Transceiver Module 07/14/15
	RN2903	1Mb / 26P	Low-Power Long Range LoRa짰 Technology Transceiver Module 10/25/17
Semtech Corporation	SX1272IMLTRT	4Mb / 129P	Low Power Long Range Transceiver
Semtech Corporation	SX1276IMLTRT	3Mb / 132P	Low Power Long Range Transceiver
HOPE Microelectronics C...	RF96	2Mb / 121P	Low Power Long Range Transceiver

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