The MAX1471 low-power, CMOS, superheterodyne, RF dual-channel receiver is designed to receive both amplitude- shift-keyed (ASK) and frequency-shift-keyed (FSK) data without reconfiguring the device
or introducing any time delay normally associated with changing modulation schemes. The MAX1471 requires few external components to realize a complete wireless RF digital data receiver for the
300MHz to 450MHz ISM bands.
The MAX1471 includes all the active components required in a superheterodyne receiver including: a lownoise amplifier (LNA), an image-reject (IR) mixer, a fully integrated phase-locked loop (PLL),
local oscillator (LO), 10.7MHz IF limiting amplifier with received-signalstrength indicator (RSSI), low-noise FM demodulator, and a 3V voltage regulator. Differential peak-detecting data
demodulators are included for both the FSK and ASK analog baseband data recovery. The MAX1471 includes a discontinuous receive (DRX) mode for low-power operation, which is configured through a
serial interface bus.
The MAX1471 is available in a 32-pin thin QFN package and is specified over the automotive -40
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