'FSK/FM/ASK' related articles 1

  1. 2009/07/08 MLX71122 - 300 to 930MHz FSK/FM/ASK Receiver
General Description
The MLX71122 is a multi-channel RF receiver IC based on a double-conversion super-heterodyne architecture. It is designed to receive FSK and ASK modulated RF signals either in 8 predefined frequency channels or frequency programmable via a 3-wire serial programming interface (SPI).
The IC is designed for a variety of applications, for example in the European bands at 433MHz and 868MHz or for the use in North America or Asia, e.g. at 315MHz, 447MHz or 915MHz.

*Programmable PLL synthesizer
*8-channel preconfigured or fully programmable SPI mode
*Double super-heterodyne receiver architecture with 2nd mixer as image rejection mixer
*Reception of FSK, FM and ASK modulated signals
*Low shut-down and operating currents
*AFC - automatic frequency correction
*AGC - automatic gain control
*On-chip IF filter
*Fully integrated FSK/FM demodulator
*RSSI for level indication and ASK detection
*2nd order low-pass data filter
*Positive and negative peak detectors
*Data slicer (with averaging or peak-detector adaptive threshold)
*32-pin Quad Flat No-Lead Package (QFN)

Application Examples
*General digital and analog RF receivers at 300 to 930MHz
*Tire pressure monitoring systems (TPMS)
*Remote keyless entry (RKE)
*Low power telemetry systems
*Alarm and security systems
*Active RFID tags
*Remote controls
*Garage door openers
*Home and building automation

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