Trade Shows

Click here for free admission
26.06. - 28.06.2018, Nuremberg
Hall 5, Booth 5-401




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Germany / General
André Huntrieser
✆: +49 (0) 2129 - 376-202
✉: Send email
Field Applications Engineer
Günter Fuchs
✆: +49 (0) 2129 376-200
✉: Send email
Tech Support
Raphael Balke
✆: +49 (0) 2129 376-200
✉: Send email

Austria / Switzerland
Karl Eder
✆: +43 (0) 7448 - 21643-11
✉: Send email





The Melexis TH72012 ASK transmitter IC is designed for applications in the European 433 MHz industrial-scientific-medical (ISM) band, according to the EN 300 220 telecommunications standard. It can also be used in other countries with similar standards like FCC part 15.231.
The transmitter's carrier frequency is determined by the frequency of the reference crystal fref. The integrated phase-locked loop (PLL) synthesizer ensures that carrier frequencies, ranging from 380 to 450 MHz, can be achieved. This is done by using a crystal with a reference frequency according to fref = fc/N, where N = 32 is the PLL feedback divider ratio.




Features Application examples
  • Fully integrated PLL-stabilized VCO
  • Frequency range from 425MHz to 445MHz
  • Single-ended RF output
  • FSK through crystal pulling allows modulation from DC to 40kbit/s
  • High FSK deviation possible for wideband data transmission
  • Wide power supply range from 1.95V to 5.5V
  • Operating temp. range from -40°C to +125°C
  • Very low standby current
  • On-chip low voltage detector
  • High over-all frequency accuracy
  • FSK deviation and center frequency independently adjustable
  • Adjustable output power range from -16dBm to max. +12dBm
  • Adjustable current consumption from 3.5mA to 15.9mA
  • Conforms to EN 300 220 and similar standards
  • 8-pin Small Outline Integrated Circuit (SOIC)
  • Automatic meter reading (AMR)
  • Tire pressure monitoring systems (TPMS)
  • Home and building automation
  • Low power telemetry systems
  • Alarm and Security Systems
  • Consumer remote controls 
  • Garage door openers
  • Wireless access control 
  • Remote controls

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