fm transmitter module mkt5 - xxx version 3.0 page 1 of 5 advancing radio solutions from 100 to 1000 mhz we manufacture high quality transmitters, receivers and transceivers features miniature sil package fully shielded data rates up to 128kbits/s 5v C 10mw 3v C 10mw versions available typical range 350+ m (433.92 mhz version) 418 / 433.92 mhz versions industry pin compatable en 300 - 220 compliant module applications vehicle alarm systems remote gate controls garage door openers domestic and commercial security wireless telemetry remote data transfer compatible receiver modules mkr5 mkr5b mkr5lc mkr2fm general description the mkt5 miniature transmitter uhf radio module enables the implementation of a simple telemetry link at data rates of up to 128kbit/s when used with the compatible mk receiver modules. available for operation at all world frequencies these modules are able to transmit at distances of up to 250 + m (433.92 mhz version). the mkt5 module will suit one - to - one and multi - node wireless links in applications including building and car security, remote industrial process monitoring and computer networking. because of its small size and low power requ irements, this modules is ideal for use in portable battery powered wireless applications.
fm transmitter module mkt5 - xxx version 3.0 pa ge 2 of 5 advancing radio solutions from 100 to 1000 mhz we manufacture high quality transmitters, receivers and transceivers absolute maximum ratings: transmitter operating temperature: - 20 c to +55 c storage temperature: - 40 c to +100 c supply voltage (pin 3) 10v data input (pin 5) 1 0v rf out (pin 2) 50v @ < 10mhz , +20dbm @ > 10mhz electrical characteristics: transmitter 433,92 mhz pin min. typ. max. units notes 5v transmitter supply voltage 3 4.0 5.0 6.0 volts supply current 3 5.5 8 9.5 ma 1 rf power 2 7 +10 dbm 1 3v transmitter supply voltage 3 2 3 4 volts supply current 3 4 6 8 ma 1 rf power 2 3 7 dbm 1 rf & data 2 nd harmonic - 50 dbc 2 harmonics @ > 1ghz - 50 dbc 2 initial frequency accuracy 75 khz modula tion bandwidth @ - 3db 25 khz 3 modulation distortion (thd) % power up time to full rf 10 s data rate 50000 bits/s 3 data pulse width 20 s note 1: measured into a 50 impedance 2: the limit for the european spec en 300 22 0 is C 36dbm 3: 128 kbits/sec version also available
fm transmitter module mkt5 - xxx version 3.0 pa ge 3 of 5 advancing radio solutions from 100 to 1000 mhz we manufacture high quality transmitters, receivers and transceivers connection details figure 1: mk transmitter pin description: rf gnd (pin 1) rf ground pin, internally connected to pin 4 (0v). this pin should ideally be connected to the nearest ground plane (e.g. coax braid, main pcb ground plane etc.) rf out (pin2) 50 rf antenna output. to achieve best results the antenna impedance must match that of the module. v cc (pin 3) +ve supply pin. the module will generate rf when v cc is pr esent. it is strongly recommended that a 100nf capacitor decouples the supply rail as close as possible to this pin. gnd (pin 4) supply and data ground connection, connected to pin 1. data in (pin 5) this input has an impedance of 47k and should ideall y be driven by a cmos logic drive or compatible. the drive circuitry should be supplied with the same supply voltage as the tx module. t5 1 2 3 4 5
fm transmitter module mkt5 - xxx version 3.0 pa ge 4 of 5 advancing radio solutions from 100 to 1000 mhz we manufacture high quality transmitters, receivers and transceivers application information antenna design the design and positioning of the antenna is as crucial as the module performance itself in achieving a good wireless system range. the following will assist the designer in maximising system performance. the antenna should be kept as far away from sources of electrical interference as physically possible. if necessary, additional power line decoupling capacitors should be placed close to the module. the antenna hot end should be kept clear of any application circuit the application circuit shows how the mkt5 transmitter can easily be integrated into a system to form a wireless link figure 3: mk transmitter application circuit f igure 2: antenna configurations to be used with the mkt5 transmitter m odules t5 a0 a1 a2 a3 a4 a5 a6 a7 vss ad8 ad9 ad10 ad11 te\ osc2 osc1 dout vdd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ht12e r osc +5v 4 5 1 2 3 +5v antenna rf rf helical antenna whip antenna 34mm @ 433mhz 17 turns equally spaced = 5mm (inside) 15.5cm @ 433mhz
fm transmitter module mkt5 - xxx version 3.0 pa ge 5 of 5 advancing radio solutions from 100 to 1000 mhz we manufacture high quality transmitters, receivers and transceivers mechanical dimensions figure 4: mk transmitter ordering information standard product; part no description mkt5 - 418* sil transmitter 418.00 mhz mkt5 - 434 - 3 hp 3v sil transmitter mkt5 - 434 - 5 5v sil transmitter 433.92 mhz * not recommended for new designs as this frequency allocation will be withdrawn in the uk. please consult our sales department for further information. m.k.consultants (uk) ltd 288a - 290 quenns road halifax west yorkshire hx1 4ns england tel +44 (0) 1422 329002 fax +44 (0) 1422 353153 email: admin@mkconsultants. eu web www. mkconsultants.eu disclaimer mkconsultants have a policy to c ontinually improve the reliability and performance of their products. we therefore reserve the right to upgrade our products performance without notice. although the data contained herewidth is believed to be accurate, however we do not assume any responsi bility whatsoever for errors or omissions this document may contain. in addition, we do not imply warranty or fitness for any particular application especially life support applications. t5 31mm 13mm 3mm 1 2 3 4 5 pin spacing 2.54mm 20.32mm
|
