RFM218B-315S2 [HOPERF]
FSK Receiver Module;RFM218BW
RFM218BW (G)FSK Receiver Module
Description
The RFM218BW is an ultra-low power, high performance receiver module which suitable for ISM band
wireless applications (G) FSK RF receiver. The module is highly integrated, which simplifies the peripheral
materials needed in the system design. It supports the direct mode which means input antenna then
output data. It also supports Duty-Cycle operation mode, channel interception, high-precision RSSI,
power-on reset, noise output and other functions, which makes the application design more flexible and
achieves product differentiation design.
Features
Comply with FCC and ETSI standard
Strong anti-interference ability, suitable for
complex interference environment scenarios
Frequency range: 315MHz, 433.92 MHz, 868.35
MHz,915 MHz
Modulation and demodulation mode: (G)FSK
Data rate: 2.4 kbps
Sensitivity: -117 dBm 2.4kbps, FRF =433.92 MHz
Voltage Range: 1.8~3.6 V
RFM218BW
Transmit current: 8.5 mA @ 433.92 MHz
Supporting ultra low power receiving mode
Sleep Current: less than 2uA
Applications
Ordering Information
Module No.
Automatic meter reading
Working Fre.
Home security and building automation
ISM band data communication
Industrial monitoring and control
Remote control and security system
Wireless sensor nodes
RFM218B-315S2
RFM218B-433S2
RFM218B-868S2
RFM218B-915S2
315MHz
433.92MHz
868.35MHz
915MHz
Labeling reader
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RFM218BW
Pin Information
Figure1. RFM218BW Pin Assignment (Top View)
Table1. RFM218BW Pin Functions
Pin No.
Name
Description
1
2
NC
SCK
Not connected
SPI clock
3
4
CSB
NC
SPI Selection to access registers
Not connected
5
6
7
8
GND
VDD
ANT
GND
NC
Ground (electricity)
Positive power supply
Antenna Input
Ground (electricity)
Not connected
9
10
11
12
13
14
NC
Not connected
GPIO2
GPIO3
GPIO1
SDIO
Fixed as RX-ACTIVE output
Configurable as: DOUT,RX-ACTIVE,DCLK
Fixed as DOUT Output
SPI Data input & output
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RFM218BW
Electrical parameters
Testing conditions: Power supply 3.3V, temperature 25℃.
Typical
Parameter
Symbol
Conditions
Minimum
Maximum
Unit
Value
Model: RFM218B-315S2
Model: RFM218B-433S2
Model: RFM218B-868S2
Model: RFM218B-915S2
315
MHz
MHz
MHz
MHz
433.92
868.35
915
Working
Fc
MOD
S
Frequency
Modulation
(G)FSK
-117
315MHz 2.4 Kbps
433.92MHz 2.4 Kbps
868.35MHz 2.4 Kbps
915MHz 2.4 Kbps
dBm
dBm
dBm
-117
Rx Sensitivity
-115
-115
dBm
KHz
500
300
3.6
9
Rx Bandwidth
Data Rate
BW
DR
50
0.5
2.4
3.3
8.5
8.5
8.7
8.7
Kbps
V
1.8
Supply Voltage
VDD
315MHz
433.92MHz
868.35MHz
915MHz
mA
mA
mA
mA
uA
9
Rx Working
Current
IOP
9
9
2
ISleep
IMR
Sleep Current
35
dB
Image Rejection
-40
+85
Working
℃
TOP
Temperature
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RFM218BW
Dimensions
Unit: mm
Figure 2.Dimensions
HOPE MICROELECTRONICS CO., LTD
Add: 2/F, Building3, pingshan Private Enterprise science
and Technology Park, xili Town, Nanshan District,
Shenzhen, China
This document may contain preliminary information and is subject to change by
Hope Microelectronics without notice. Hope Microelectronics assumes no
responsibility or liability for any use of the information contained herein.
Nothing in this document shall operate as an express or implied license or
indemnity under the intellectual property rights of Hope Microelectronics or
third parties. The products described in this document are not intended for use
in implantation or other direct life support applications where malfunction may
result in the direct physical harm or injury to persons. NO WARRANTIES OF ANY
KIND, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIESOF
Tel: 86-755-82973805
Fax: 86-755-82973550
Email: sales@hoperf.com
Website: http://www.hoperf.com
MECHANTABILITYORFITNESSFORAARTICULARPURPOSE, ARE OFFERED IN THIS
DOCUMENT.
© 2006,HOPEMICROELECTRONICSCO.,LTD.Allrightsreserved.
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