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ATA5749 - Fractional-N PLL Transmitter

General Description

The Atmel® ATA5749 is a fractional-N-PLL transmitter IC for 300MHz to 450MHz operation and is especially targeted for Tire Pressure Sensor Gauges, Remote Keyless Entry, and Passive Entry and other automotive applications.

Key Features

  • Fully Integrated Fractional-N PLL.
  • ASK and Closed Loop FSK Modulation.
  • Output Power Up to +12.5dBm from 300MHz to 450MHz.
  • Current Consumption is Scaled by Output Power Programming.
  • Fast Crystal Oscillator Start-up Time of Typically 200µs.
  • Low Current Consumption of Typically 7.3mA at 5.5dBm.
  • Only One 13.0000MHz Crystal for 314.1MHz to 329.5MHz and 424.5MHz to 439.9MHz Operation.
  • Single Ended RF Power Amplifier Output.

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Other Datasheets by Atmel (now Microchip Technology)

Part Number Description
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Features • Fully Integrated Fractional-N PLL • ASK and Closed Loop FSK Modulation • Output Power Up to +12.5dBm from 300MHz to 450MHz • Current Consumption is Scaled by Output Power Programming • Fast Crystal Oscillator Start-up Time of Typically 200µs • Low Current Consumption of Typically 7.3mA at 5.5dBm • Only One 13.0000MHz Crystal for 314.1MHz to 329.5MHz and 424.5MHz to 439.9MHz Operation • Single Ended RF Power Amplifier Output • Many Software Programmable Options Using SPI: – Output Power from –0.5dBm to +12.5dBm – RF Frequency from 300MHz to 450MHz with Different Crystals – FSK Deviation with 396Hz Resolution – CLK Output Frequency 3.25MHz or 1.