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LMX2485Q-Q1 - High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers

General Description

The LMX2485Q-Q1 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integerN PLL.

The device is fabricated using TI’s advanced process.

With delta-sigma architecture, fractional spurs at lower offset frequencies are pushed to higher frequencies outside the loop bandwidth.

Key Features

  • 1 Quadruple Modulus Prescaler for Lower Divides.
  • RF PLL: 8/9/12/13 or 16/17/20/21.
  • IF PLL: 8/9 or 16/17.
  • Advanced Delta Sigma Fractional Compensation.
  • 12-Bit or 22-Bit Selectable Fractional Modulus.
  • Up to 4th Order Programmable Delta-Sigma Modulator.
  • Improved Lock Times and Programming.
  • Fastlock / Cycle Slip Reduction Requiring Only a Single-Word Write.
  • Integrated Time-Out Counter.
  • Wide Operating Range.

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Datasheet Details

Part number LMX2485Q-Q1
Manufacturer Texas Instruments
File Size 1.35 MB
Description High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
Datasheet download datasheet LMX2485Q-Q1 Datasheet

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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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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LMX2485Q-Q1 SNOSCP7A – MARCH 2013 – REVISED JANUARY 2016 LMX2485Q-Q1 500 MHz - 3.1 GHz High Performance Delta-Sigma Low Power Dual PLLatinum™ Frequency Synthesizers With 800-MHz Integer PLL 1 Features •1 Quadruple Modulus Prescaler for Lower Divides – RF PLL: 8/9/12/13 or 16/17/20/21 – IF PLL: 8/9 or 16/17 • Advanced Delta Sigma Fractional Compensation – 12-Bit or 22-Bit Selectable Fractional Modulus – Up to 4th Order Programmable Delta-Sigma Modulator • Improved Lock Times and Programming – Fastlock / Cycle Slip Reduction Requiring Only a Single-Word Write – Integrated Time-Out Counter • Wide Operating Range – LMX2485Q-Q1 RF PLL: 500 MHz to 3.