MAX1471ATJ/V+ (MAXIM INTEGRATED PRODUCTS)

The MAX1471ATJ/V+ from Maxim Integrated Products is a 315MHz/434MHz low power, 3V/5V ASK/FSK superheterodyne receiver in 32 pin TQFN package. This CMOS dual channel receiver and few external components provides complete ASK/FSK receive chain from antenna to digital output data. Depending on signal power, component selection, data rates as high as 33Kbps using manchester code (66Kbps nonreturn to zero) can be achieved. It is designed to receive binary FSK/ASK data on a 300MHz to 450MHz carrier without reconfiguring device or introducing any time delay normally associated with changing modulation schemes. ASK modulation uses a difference in amplitude of carrier to represent logic 0 and logic 1 data. FSK uses difference in frequency of carrier to represent a logic 0 and logic 1. It includes a LNA, an IR mixer, an integrated PLL, local oscillator, 10.7MHz IF limiting amplifier with received signal strength indicator, low-noise FM demodulator and a 3V voltage regulator.