PDF RFM68CW Data sheet ( Hoja de datos )

Número de pieza	RFM68CW
Descripción	Low Cost ISM Transmitter Module
Fabricantes	HOPERF
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No Preview Available ! RFM68CW RFM68CW Low Cost ISM Transmitter Module Features GENERAL DESCRIPTION APPLICATIONS The RFM68CW is an ultra-low-cost, FSK or OOK transmitter module suitable for Garage Door Openers Low-Cost Consumer operation in the 315, 433, 868 and Electronic Applications 915 MHz licence free ISM bands., the RFM68CW may be used Remote Keyless Entry (RKE) without the requirement for configuration via an MCU. However, in conjunction with a Remote Control / Security Systems microcontroller, the communication link parameters may be re-configured. Including, KEY PRODUCT FEATURES output power, modulation format and operating channel. +10 dBm or 0 dBm The RFM68CW offers integrated radio performance with cost efficiency and is suited for operation in North America FCC part 15.231, FCC part 15.247 DTS and FHSS modes,15.249, and Europe EN 300 220. Configurable output power Bit rates up to 100 kbps OOK and FSK modulation. 1.8 to 3.7 V supply range. Low BOM Fully Integrated Tx Fractional-N PLL with 1.5 kHz In order to better use RFM68CW modules, this specification also typical step involves a large number of the Frequency agility for FHSS parameters and functions of its modulation core chip RF68's,including those IC pins which are not leaded out. FCC Part 15.247 DTS Mode All of these can help customers compliant gain a better understanding of Module Size:16X16mm the performance of RFM68CW modules, and enhance the application skills. V1.1 RFM68CW Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 1 Free Datasheet http://www.datasheet4u.com/ 1 page RFM68CW RFM68CW 2. Electrical Characteristics 2.1. ESD Notice The RFM68CW 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 5 Free Datasheet http://www.datasheet4u.com/ 5 Page RFM68CW RFM68CW 4.5. Frequency Band Coverage The RFM68CW 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 RFM68CW 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 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http:/ / www.hoperf.com Free Datasheet http://www.datasheet4u.com/ 11 Page

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