The MAX1473 fully integrated low-power CMOS superheterodyne
receiver is ideal for receiving amplitude-shift-keyed (ASK) data in the 300MHz to 450MHz
frequency range. Its signal range is from -114dBm to
0dBm. With few external components and a low-current
power-down mode, it is ideal for cost- and power-sensitive
applications typical in the automotive and consumer
markets. The chip consists of a low-noise amplifier
(LNA), a fully differential image-rejection mixer, an on-chip
phase-locked-loop (PLL) with integrated voltage-controlled
oscillator (VCO), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator
(RSSI), and analog baseband data-recovery circuitry.
The MAX1473 also has a discrete one-step automatic gain control (AGC) that drops the LNA gain by 35dB
when the RF input signal is greater than -57dBm.
The MAX1473 is available in 28-pin TSSOP and 32-pin
thin QFN packages. Both versions are specified for the
extended (-40°C to +85°C) temperature range.
Key Features
Applications/Uses
Optimized for 315MHz or 433MHz ISM Band
Operates from Single 3.3V or 5.0V Supplies
High Dynamic Range with On-Chip AGC
Selectable Image-Rejection Center Frequency
Selectable x64 or x32 fLO/fXTAL Ratio
Low 5.2mA Operating Supply Current
<2.5µA Low-Current Power-Down Mode for
Efficient Power Cycling
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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