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Maestro Wireless Solutions
Maxim Integrated
Maxim Integrated
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315MHz Low-Power, 3V Superheterodyne Receiver

Maxim Integrated

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 the automotive and consumer markets.

Product Description

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.

  • Built-In 53dB RF image rejection
  • -115dBm receive sensitivity
  • 250µS startup time
  • 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
  • Antenna Connector:PCB, Surface Mount
  • Applications:ISM, Garage Door Openers, RKE
  • Current - Receiving:5.5mA
  • Data Interface:PCB, Surface Mount
  • Frequency:315MHz
  • Modulation or Protocol:ASK
  • Operating Temperature:-40°C ~ 85°C
  • Package / Case:28-TSSOP (0.173", 4.40mm Width)
  • Packaging:Tube
  • Sensitivity:-115dBm
  • Supplier Device Package:28-TSSOP
  • Voltage - Supply:3 V ~ 3.6 V