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PDF RFM68W Data sheet ( Hoja de datos )
| Número de pieza | RFM68W | |
| Descripción | Low Cost ISM Transmitter Module | |
| Fabricantes | HOPERF | |
| Logotipo |  |
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RFM68W Low Cost ISM Transmitter Module
Features
GENERAL DESCRIPTION
APPLICATIONS
The RFM68W is an ultra-low-cost, Garage Door Openers
FSK or OOK transmitter module
suitable for operation in the 315, Low-Cost Consumer
433, 868 and 915 MHz licence
free ISM bands., the RFM68W
may be used without the
Electronic Applications
Remote Keyless Entry (RKE)
requirement for configuration via Remote Control / Security
an MCU. However, in conjunction
with a microcontroller, the
Systems
communication link parameters
may be re-configured. Including,
output power, modulation format KEY PRODUCT FEATURES
and operating channel.
The RFM68W offers integrated +10 dBm or 0 dBm
radio performance with cost
efficiency and is suited for
Configurable output power
operation in North America FCC Bit rates up to 100 kbps
part 15.231, FCC part 15.247 OOK and FSK modulation.
DTS and FHSS modes,15.249,
and Europe EN 300 220.
1.8 to 3.7 V supply range.
Low BOM Fully Integrated Tx
In order to better use RFM68W
modules, this specification also
involves a large number of the
parameters and functions of its
Fractional-N PLL with 1.5 kHz
typical step
Frequency agility for FHSS
core chip RF68's,including those
modulation
IC pins which are not leaded out.
All of these can help customers
FCC Part 15.247 DTS Mode
gain a better understanding of
compliant
the performance of RFM68W
modules, and enhance the
Module Size:15X14.5mm
application skills.
V1.2
RFM68W
RFM68W
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
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RFM68W
RFM68W
2. Electrical Characteristics
2.1. ESD Notice
The RFM68W is an electrostatic discharge sensitive device. It satisfies Class 2 of the JEDEC standard
JESD22-A114-B (human body model) on all pins.
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
Tjunc
Tstor
Supply Voltage
Temperature
Junction Temperature
Storage Temperature
Description
Min Max Unit
-0.5 3.9 V
-55 115 ° C
-55 125 ° C
-55 150 ° C
2.3. Operating Range
Operating ranges define the limits for functional operation and the parametric characteristics of the device as described in
this section. Functionality outside these limits is not implied.
Table 3 Operating Range
Symbol
VDDop
Top
Clop
Description
Supply voltage
Operational temperature range
Load capacitance on digital ports
Min Max Unit
1.8 3.7 V
-40 85 ° C
- 25 pF
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http:/ / www.hoperf.com
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RFM68W
RFM68W
4.5. Frequency Band Coverage
The RFM68W offers several combinations or frequency references and frequency outputs, allowing for maximum flexibility
and design of multi-band products:
Table 7 Frequency Selection Table
Reference
Frequency
FXOSC
Band Setting
DA(13)
Upper / Lower
Frequency
Bounds
22 MHz
310 to 450 MHz
Fstep
Fstep= 22--2--x--1-1-4--0---6----= 1.34277kHz
Frf &
Fdev
24 MHz
0
312 to 450 MHz
Fstep= 24--2--x--1-1-4--0---6----= 1.46484kHz Frf= DF(18;0) × Fstep
26 MHz
338 to 450 MHz
Fstep=
26----x---1---0---6----
214
=
1.58691kHz
Fdev= DA(12;5) × Fstep
1
860 to 870 MHz
and
Fstep= 2---6-2---x1--3-1---0-6---= 3.17383kHz
902 to 928 MHz
4.6. Power Consumption
The following typical power consumption figures are observed on the RFM68W kits. Note that the transmitter efficiency
depends on the impedance matching quality, and can be PCB design dependant.
The PA matching may be different in each frequency band.
Table 8 Power Consumption in Tx mode
Frequency Band Conditions
310 to 450 MHz
860 to 870 MHz
902 to 928 MHz
Pout=+10dBm, OOK modulation with 50% duty cycle
Pout=+10dBm, FSK modulation
Pout=0dBm, FSK modulation
Pout=+10dBm, FSK modulation
Pout=0dBm, FSK modulation
Pout=+10dBm, FSK modulation
Pout=0dBm, FSK modulation
Typical Current
Drain
11 mA
15 mA
9 mA
16.5 mA
10 mA
17.5 mA
10.5 mA
11
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| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet RFM68W.PDF ] | |
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