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MAX1470：315MHz Low-Power, +3V Superheterodyne Receiver

112dB Sensitivity, 300MHz-450MHz Super-Het Receiver Has 50dB of Integrated Image Rejection

The MAX1470 is a fully integrated low-power CMOS superheterodyne receiver for use with amplitude-shift-keyed (ASK) data in the 315MHz band. With few required external components, and a low-current power-down mode, it is ideal for cost- and power-sensitive applications in consumer markets. The chip consists of a 315MHz low-noise amplifier (LNA), an image rejection mixer, a fully integrated 315MHz phase-lock-loop (PLL), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator (RSSI) and an ASK demodulator, and analog baseband data-recovery circuitry. The MAX1470 is available in a 28-pin TSSOP package. FAQs: MAX1470

Key Features Operates from a Single +3.0V to +3.6V Supply Built-In 53dB RF Image Rejection -115dBm Receive Sensitivity* 250µs Startup Time Low 5.5mA Operating Supply Current 1.25µA Low-Current Power-Down Mode for Efficient Power Cycling 250MHz to 500MHz Operating Band (Image Rejection Optimized at 315MHz) Integrated PLL with On-Board Voltage-Controlled Oscillator (VCO) and Loop Filter Selectable IF Bandwidth Through External Filter Complete Receive System from RF to Digital Data Out

MAX1470: Typical Application Circuit Applications/Uses Garage Door Openers Medical Systems Remote Controls Remote Keyless Entry (RKE) Security Systems Toys Video Game Controllers Wireless Computer Peripherals Wireless Sensors

DataSheet

Parametrics

Design kits & evaluation modules

• MAX1470EVKIT

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