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LMX2487 - Frequency Synthesizers

General Description

The LMX2487 device is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL.

It 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: 16/17/20/21 or 32/33/36/37.
  • 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.
  • Fastlock / Cycle Slip Reduction With SingleWord Write to Change Frequencies.
  • Integrated Time-Out Counter.
  • Wide Operating Range.

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📁 Similar Datasheet

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Other Datasheets by Texas Instruments

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LMX2487E Frequency Synthesizers
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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 LMX2487 SNAS322C – FEBRUARY 2006 – REVISED JANUARY 2016 LMX2487 1-GHz to 6-GHz High Performance Delta-Sigma Low-Power Dual PLLatinum™ Frequency Synthesizers With 3-GHz Integer PLL 1 Features •1 Quadruple Modulus Prescaler for Lower Divides – RF PLL: 16/17/20/21 or 32/33/36/37 – 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 – Fastlock / Cycle Slip Reduction With SingleWord Write to Change Frequencies – Integrated Time-Out Counter • Wide Operating Range – LMX2487 RF PLL: 1.0 GHz to 6.