MAX41470

290MHz to 960MHz ASK/FSK Receiver with SPI Interface

High RF Sensitivity Receiver with Low Current Consumption, Ideal for Low-Cost and Power-Sensitive ASK/FSK Applications


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Description

The MAX41470 is a high-performance, low-power receiver that is ideal for amplitude shift-keyed (ASK) and frequency shift-keyed (FSK) data. The receiver can be configured for three popular sub-1GHz bands while using a single low-cost 16MHz crystal: 287MHz to 320MHz, 425MHz to 480MHz, and 860MHz to 960MHz.

The MAX41470 is capable of both ASK and FSK reception and is also fully programmable through an SPI interface.

The receiver has excellent RF sensitivity and allows input signals up to 0dBm of power at the RF input. With an integrated IF filter, a few external components, and low operating/power-down currents, the MAX41470 receiver is ideal for cost- and power-sensitive applications. The chip also includes a low-noise amplifier (LNA), fully differential image-rejection mixer, on-chip phase-locked loop (PLL) with integrated voltage-controlled oscillator (VCO), received signal strength indicator (RSSI), and digital demodulation.

The device operates in the 1.8V to 3.6V supply voltage range and also features a power-saving, fully programmable, self-polling (duty cycling) mode with preamble detection and interrupt output to wake up an external microcontroller unit (MCU).

The parts are available in a 12-pin thin QFN (TQFN) package and are specified for the -40°C to +105°C extended temperature range.

MAX41470: Functional Diagram MAX41470: Functional Diagram Enlarge+

Key Features

  • Low Bill of Materials (BOM)
    • No External Balun, No External Filter, etc.
    • Single Low-Cost 16MHz External Crystal
  • Long Range with High Sensitivity
  • Low Power Consumption
    • ​9mA Operating Supply Current
    • 10nA Power-Down Current
  • Self-Polling (Remote Wake-Up) for Reduced Power
    • Preamble Detection with Interrupt Output
    • Average Current as Low as 350μA
    • Duty Cycle Less Than 1% Capable
    • Fast Startup Time
  • Automatic Gain Control (AGC) Adjusted Digital RSSI
  • Automatic Frequency Control (AFC)
  • Fast Frequency Switching Frac-N Synthesizer
  • 33dB Calibrated Image Rejection
  • Passes ETSI Category 2 Blocking Requirements
  • ±2.5kV HBM ESD Protection, ±4kV on LNA Input
  • Up to 200kbps Data Rate (NRZ)
  • 1.8V to 3.6V Supply Voltage
  • -40°C to +105°C Operating Temperature Range
  • 4mm x 4mm, 12-TQFN with 0.8mm Pitch

Applications/Uses

  • Home Automation and Security
  • Building Access Control
  • Garage Door Openers (GDO)
  • Remote Keyless Entry (RKE)
  • Tire Pressure Monitoring Systems (TPMS)
  • Restaurant Pagers

Pricing 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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX41470EVKIT: Evaluation Kit for the MAX41470
Request Reliability Report for: MAX41470 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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MAX41470
290MHz to 960MHz ASK/FSK Receiver with SPI Interface

  • Low Bill of Materials (BOM)
  • Long Range with High Sensitivity
  • Low Power Consumption