Datasheet4U Logo Datasheet4U.com

LMX2487E - High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers

General Description

The LMX2487E is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL.

It is fabricated using National Semiconductor’s advanced process.

Key Features

  • Quadruple Modulus Prescalers for Lower Divide Ratios.
  • 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 Features for Improved Lock Times and Programming.
  • Fastlock / Cycle slip reduction.
  • Integrated time-out counter.
  • Single word write to change frequencies with Fastlock Wide Operating Range.
  • LMX2487E RF PLL:.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LMX2487E Frequency Synthesizers Texas Instruments
LMX2487 Frequency Synthesizers Texas Instruments
LMX2485 3-GHz Delta-Sigma Low-Power Dual PLLatinum Frequency Synthesizer Texas Instruments
LMX2485E 3-GHz Delta-Sigma Low-Power Dual PLLatinum Frequency Synthesizer Texas Instruments
LMX2485Q-Q1 High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers Texas Instruments

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LMX2487 High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
LMX2485 High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
LMX2485E High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
LMX2486 High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
LMX2411 Baseband Processor

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
LMX2487E High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizer May 2007 LMX2487E 7.5 GHz High Performance Delta-Sigma Low Power Dual PLLatinum™ Frequency Synthesizers with 3.0 GHz Integer PLL General Description The LMX2487E is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. It is fabricated using National Semiconductor’s advanced process. With delta-sigma architecture, fractional spurs at lower offset frequencies are pushed to higher frequencies outside the loop bandwidth. The ability to push close in spur and phase noise energy to higher frequencies is a direct function of the modulator order.