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LMX2470 - 2.6 GHz Delta-Sigma Fractional-N PLL

General Description

The LMX2470 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integerN PLL.

The device is fabricated using TI’s advanced BiCMOS process.

Key Features

  • 1.
  • 2 Low In-Band Phase Noise and Low Fractional Spurs.
  • 12 Bit or 22 Bit Selectable Fractional Modulus.
  • Up to 4th Order Programmable Delta-Sigma Modulator.
  • Enhanced Anti-Cycle Slip Fastlock Circuitry.
  • Fastlock.
  • Cycle Slip Reduction.
  • Integrated Timeout Counters.
  • Digital Lock Detect Output.
  • Prescalers Allow Wide Range of N Values.
  • RF PLL: 16/17/20/21.
  • IF PLL: 8/9 or 16/17.
  • Crystal Reference Fr.

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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.

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LMX2470 www.ti.com SNAS195B – MARCH 2003 – REVISED MARCH 2013 LMX2470 2.6 GHz Delta-Sigma Fractional-N PLL with 800 MHz Integer-N PLL Check for Samples: LMX2470 FEATURES 1 •2 Low In-Band Phase Noise and Low Fractional Spurs • 12 Bit or 22 Bit Selectable Fractional Modulus • Up to 4th Order Programmable Delta-Sigma Modulator • Enhanced Anti-Cycle Slip Fastlock Circuitry – Fastlock – Cycle Slip Reduction – Integrated Timeout Counters • Digital Lock Detect Output • Prescalers Allow Wide Range of N Values – RF PLL: 16/17/20/21 – IF PLL: 8/9 or 16/17 • Crystal Reference Frequency up to 110 MHz • On-chip Crystal Reference Frequency Doubler. • Phase Comparison Frequency up to 30 MHz • Hardware and Software Power-down Control • Ultra Low Consumption: ICC = 4.