LMX2470SLEX/NOPB by Texas Instruments | APACRF PLLs | Avnet ASIA
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LMX2470SLEX/NOPB

Texas Instruments

PLL Frequency Synthesizer Dual 75MHz to 2600MHz 24-Pin LAM UCSP T/R

製造商產品編號: LMX2470SLEX/NOPB

替代料號: LMX2470SLEX/NOPB


通過RoHS認證

描述

文檔

替代/替換

資料

The LMX2470 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. The device is fabricated using TI’s advanced BiCMOS process.

With delta-sigma architecture, fractional spur compensation is achieved with noise shaping capability of the delta-sigma modulator and the inherent low pass filtering of the PLL loop filter. Fractional spurs at lower frequencies are pushed to higher frequencies outside the loop bandwidth. Unlike analog compensation, the digital feedback techniques used in the LMX2470 are highly resistant to changes in temperature and variations in wafer processing. With delta-sigma architecture, the ability to push close in spur and phase noise energy to higher frequencies is a direct function of the modulator order. The higher the order, the more this energy can be spread to higher frequencies. The LMX2470 has a programmable modulator up to order four, which allows the designer to select the optimum modulator order to fit the phase noise, spur, and lock time requirements of the system.

Programming is fast and simple. Serial data is transferred into the LMX2470 via a three line MICROWIRE interface (Data, Clock, Load Enable). Nominal supply voltage is 2.5 V. The LMX2470 features a typical current consumption of 4.1 mA at 2.5 V. The LMX2470 is available in a 24 lead 3.5 X 4.5 X 0.6 mm package.

 

技術參數

  • 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 = 4.1 mA (Typical)
  • 技術屬性

    描述
    尋找類似物料
    Minimum Input Frequency
    75 MHz
    MSL Level
    1
    Supplier Package
    LAM UCSP
    Maximum Input Frequency
    2600 MHz
    Product Dimensions
    4.5 x 3.5 x 0.6 mm
    Number of Elements per Chip
    2
    Operating Supply Voltage
    2.5 V
    Pin Count
    24
    Lead Finish
    Nickel/Gold
    Mounting
    Surface Mount
    Max Processing Temp
    260
    Operating Temperature
    -40 to 85 °C
    Type
    PLL Frequency Synthesizer

    ECCN/UNSPSC

    描述
    ECCN:
    EAR99
    計劃交貨期 B:
    8542390000"
    HTSN:
    8542310000"
    UNSPSC:
    32101600
    UNSPSC VERSION:
    V15.1101

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