FM Transmitter Module MKT5-XXX Features MINIATURE SIL PACKAGE FULLY SHIELDED DATA RATES UP TO 128KBITS/S 5v – 10mW 3v – 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 Compatible Receiver Modules VEHICLE ALARM SYSTEMS MKR5 REMOTE GATE CONTROLS MKR5B GARAGE DOOR OPENERS MKR5LC DOMESTIC AND COMMERCIAL SECURITY MKR2FM WIRELESS TELEMETRY REMOTE DATA TRANSFER 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). Version 3.0 The MKT5 module will suit one-to-one and multinode wireless links in applications including building and car security, remote industrial process monitoring and computer networking. Because of its small size and low power requirements, this modules is ideal for use in portable battery powered wireless applications. Advancing radio solutions from 100 to 1000 MHz We manufacture high quality transmitters, receivers and transceivers Page 1 of 5 FM Transmitter Module MKT5-XXX Absolute Maximum Ratings: Transmitter Operating temperature: Storage temperature: -20 C to +55 C -40 C to +100 C Supply Voltage (pin 3) Data input (pin 5) RF Out (pin 2) 10V 10V 50V @ < 10MHz , +20dBm @ > 10MHz Electrical Characteristics: Transmitter 433,92 MHz pin min. Typ. max. units notes 5v Transmitter Supply voltage Supply current RF power 3 3 2 4.0 5.5 7 5.0 8 6.0 9.5 +10 Volts mA dBm 1 1 3v Transmitter Supply voltage Supply current RF power 3 3 2 2 4 3 3 6 4 8 7 Volts mA dBm 1 1 RF & Data nd 2 harmonic Harmonics @ > 1GHz Initial frequency accuracy Modulation bandwidth @ -3dB Modulation distortion (THD) Power up time to full RF Data rate Data pulse width Note 1: 2: 3: -50 -50 75 dBc dBc KHz 2 2 25 KHz % s 3 bits/s s 3 10 50000 20 measured into a 50 impedance the limit for the European spec EN 300 220 is –36dBm 128 kbits/sec version also available Version 3.0 Advancing radio solutions from 100 to 1000 MHz We manufacture high quality transmitters, receivers and transceivers Page 2 of 5 FM Transmitter Module MKT5-XXX Connection Details T5 1 2 3 4 5 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. VCC (pin 3) +Ve supply pin. The module will generate RF when VCC is present. 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 ideally be driven by a CMOS logic drive or compatible. The drive circuitry should be supplied with the same supply voltage as the Tx module. Version 3.0 Advancing radio solutions from 100 to 1000 MHz We manufacture high quality transmitters, receivers and transceivers Page 3 of 5 FM Transmitter Module MKT5-XXX Application Information Application Circuit Antenna Design The application circuit shows how the MKT5 transmitter can easily be integrated into a system to form a wireless link 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. ANTENNA +5V +5V 1 1 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. T5 2 3 4 5 6 7 8 9 A0 VDD A1 DOUT A2 OSC1 A3 OSC2 A4 TE\ A5 AD11 A6 AD10 A7 AD9 VSS AD8 2 3 4 5 18 17 16 ROSC 15 14 13 12 11 10 HT12E The antenna ‘hot end’ should be kept clear of any objects, especially any metal as this can severely restrict the efficiency of the antenna to receive power. Any earth planes restricting the radiation path to the antenna will also have the same effect. Figure 3: MK Transmitter Application Circuit Best range is achieved with either a straight piece of wire, rod or PCB track @ ¼ wavelength (15.5cm @ 433.92MHz). Further range may be achieved if the ¼ wave antenna is placed perpendicular in the middle of a solid earth plane measuring at least 16cm radius. In this case, the antenna should be connected to the module via some 50 ohm characteristic impedance coax. Helical Antenna RF 34mm @ 433MHz 17 turns equally spaced = 5mm (inside) Whip Antenna RF 15.5cm @ 433MHz Figure 2: Antenna Configurations To Be Used With The MKT5 Transmitter Modules Version 3.0 Advancing radio solutions from 100 to 1000 MHz We manufacture high quality transmitters, receivers and transceivers Page 4 of 5 FM Transmitter Module MKT5-XXX Mechanical Dimensions 3mm 31mm 13mm T5 pin spacing 2.54mm 1 2 3 4 5 20.32mm Figure 4: MK Transmitter Ordering Information Standard Product; Part No Description MKT5-418* SIL Transmitter 418.00 MHz MKT5-434-3HP 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: Web [email protected] www.mkconsultants.eu Disclaimer MKConsultants have a policy to continually 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 responsibility 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. Version 3.0 Advancing radio solutions from 100 to 1000 MHz We manufacture high quality transmitters, receivers and transceivers Page 5 of 5