MTX-715

www.DataSheet4U.com RADIO MODULE MTX-705/15/35 FSK/ASK TRANSMITTER MODULE Supports the follow parts: MTX-705 MTX-715 MTX-735 Y R A IN M I L E 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 M I L E Typical Applications R P „ „ „...