MTX-705

RADIO MODULE MTX-705/15/35 FSK/ASK TRANSMITTER MODULE Supports the follow parts: MTX-705 MTX-715 MTX-735 RY A IN IM EL PR DATA SHEET Radios, Inc. April 14, 2006 Preliminary Data Sheet MTX-705/15/35 FSK/ASK TRANSMITTER MODULE The MTX-705/15/35 FSK/ASK transmitter is designed for applications in the 315 MHz, 433 MHz, or 868 MHz industrial-scientific-medical (ISM) band, according to the EN 300 220 telecommunications standard; but it can also be used in any other country with similar frequency bands. The MTX-705/15/35 transmitter consists of a fully integrated voltage-controlled oscilattor, a divide-by-32 divider, a phase-frequency detector and a charge pump. An internal loop filter determines the dynamic behavior of the PLL and suppresses reference spurious signals. A Colpitts crystal oscillator is used as the reference oscillator of a phaselocked loop synthesizer. The VCO’s output signal feeds the power amplifier. Key Features Fully integrated PLL-stabilized VCO Frequency range from 250-350MHz, 380450MHz, or 850-930MHz Single-ended RF output FSK through crystal pulling allows modulation from DC to 40 kbit/s High FSK deviation possible for wideband data transmission ASK achieved by on/off keying of internal power amplifier up to 40 kbit/s Very low standby current On-chip low voltage detector High over-all frequency accuracy FSK deviation and center frequency independently adjustable Y R A IN IM L Typical Applications E PR Adjustable output power range: -11 to +10 dBm Adjustable current consumption: 3.4 to 10.6 mA General digital data transmission Tire Pressure Monitoring System (TPMS) Remote Keyless Entry (RKE) Low-power telemetry Alarm and security systems Garage door openers Home automation PRODUCT ORDER INFORMATION Part Number M TX-705(D)(S) M TX-715(D)(S) M TX-735(D)(S) Description TH72005 FSK/ASK Module Transmitter TH72015 FSK/ASK Module Transmitter TH72035 FSK/ASK Module Transmitter Contact Information Radios, Inc. P.O. Box 1304 North Wales, PA 19454 Phone: 215-362-1899 Fax: 215-362-2214 Email: sales@radiosinc.com -Page 2- MTX-705/15/35 FSK/ASK TRANSMITTER MODULE Mechanical and Pin Diagram Pin Num Pin Name Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Ant Gnd Gnd FSK-DATA ASK-DATA PRELIMINARY Description Pin Num Pin Name Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 +VIN REG-EN +3.3V ENTX N/C RF Output Ground Ground FSK Data Input ASK Data Input Pin Description Description Supply Voltage Regulator Enable Regulated Output Bandwidth Selection Bit 0 No Connect -Page 3- MTX-705/15/35 FSK/ASK TRANSMITTER MODULE Electrical Limits Sym VDD Parameters Absolute Maximum Ratings Supply Voltage Storage Temperature Range Lead Temperature Enable Input Voltage Operating Ratings Supply Voltage Enable Input Voltage Ambient operating temperature Min -20 -65 Typ Max 20 150 Unit Notes V °C °C V V V °C 260 -20 2.5 0 -40 +20 16 TBD 125 VEN VEN TA Electrical Characteristics This device is ESD sensitive. Do not operate or store near strong electrostatic fields. Use appropriate ESD precautions. All voltages are with respect to Ground. Parameters Operating Conditions Input Low Voltage Input High Voltage XOSC Frequency Test Conditions ENTX, DATA pins ENTX, DATA pins MTX-705 MTX-715 MTX-735 MTX-705 MTX-715 MTX-735 MTX-705 MTX-715 MTX-735 NRZ NRZ Min 0.7VCC 9 11.9 26.6 290 380 850 ±2.5 ±2.5 ±2.5 Typ Max 0.3VCC 10.9 14 29 350 450 930 ±30 ±40 ±60 40 40 Unit V V MHz MHz MHz MHz MHz MHz kHz kHz kHz kbit/s kbit/s VCO Frequency FSK Deviation FSK Data Rate ASK Data Rate Operating Currents Standby Current Y R A IN IM L E PR ENTX=0, 85°C ENTX=0, 125°C ENTX, DATA pins ENTX, DATA pins ENTX=1 ENTX=0 FSK/ASK-DATA=1 FSK/ASK-DATA=0, ENTX=1 FSK/ASK-DATA=0, ENTX=0 0.2 7.3 9.4 10.6 13.4 Supply Current - MTX-705/15 Supply Current - MTX-735 Digital Pin Characteristics Input Low Voltage CMOS Input High Voltage CMOS Pull Down Current ENTX pin Low Level Input Current ENTX pin High Level Input Current DATA pins Pull Up Current DATA pins active Pull Up Current DATA pins standby FSK Switch Resistance MOS Switch On Resistance MOS Switch Off Resistance 200 4 13.3 17.3 nA µA mA mA -0.3 0.7VCC 0.2 2 0.1 1.5 0.3VCC VCC+0.3 20 0.02 0.02 12 0.02 V V µA µA µA µA µA FSK-DATA=0, ENTX=1 FSK-DATA=1, ENTX=1 20 1 60 Ohm MOhm -Page 4- MTX-705/15/35 FSK/ASK TRANSMITTER MODULE Electrical Characteristics Power Select Characteristics Power Select Current Power Select Voltage Low Voltage Detection Characteristic Low Voltage Detect Threshold CW Spectrum Characteristics Output Power MTX-705 Output Power MTX-715 Output Power MTX-735 Phase Noise Spurious Emissions According to EN 300 220-1 (2000.09) table 13 ENTX=1 ENTX=1 CONT. 7 1.47 8.6 9.9 µA V ENTX=1 1.75 1.85 1.95 V Start-up Parameters Start-up Time Frequency Stability Frequency Stability vs. Supply Voltage Frequency Stability vs. Temperature crystal at constant temperature ENABLE Input Enable Input Logic-Low Voltage(VIL) Enable Input Logic-High Voltage(VIH) Enable Input Current RY A IN IM EL PR regulator shutdown regulator enabled VIL