Overview

Features and Benefits

  • +2.1V to +3.6V Single-Supply Operation
  • OOK/ASK Transmit Data Format
  • Up to 100kbps Data Rate
  • +13dBm Output Power into 50Ω Load
  • Low 7.7mA (typ) Operating Supply Current*
  • Uses Small, Low-Cost Crystal
  • Small 3mm x 3mm 8-Pin SOT23 Package
  • Fast-On Oscillator: 250µs Startup Time

Product Details

The MAX7044 crystal-referenced phase-locked-loop (PLL) VHF/UHF transmitter is designed to transmit OOK/ASK data in the 300MHz to 450MHz frequency range. The MAX7044 supports data rates up to 100kbps, and provides output power up to +13dBm into a 50Ω load while only drawing 7.7mA at 2.7V.

The crystal-based architecture of the MAX7044 eliminates many of the common problems with SAW-based transmitters by providing greater modulation depth, faster frequency settling, higher tolerance of the transmit frequency, and reduced temperature dependence. The MAX7044 also features a low supply voltage of +2.1V to +3.6V. These improvements enable better overall receiver performance when using the MAX7044 together with a superheterodyne receiver such as the MAX1470 or MAX1473.

A simple, single-input data interface and a buffered clock-out signal at 1/16th the crystal frequency make the MAX7044 compatible with almost any microcontroller or code-hopping generator.

The MAX7044 is available in an 8-pin SOT23 package and is specified over the -40°C to +125°C automotive temperature range.

Applications

  • Garage Door Openers
  • Remote Keyless Entry (RKE)
  • RF Remote Controls
  • Security Systems
  • Tire-Pressure Monitoring (TPM)
  • Wireless Computer Peripherals
  • Wireless Game Consoles
  • Wireless Sensors

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

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MAX7044 Companion Parts

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Evaluation Boards

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.