Overview

The 849N2505I is a clock synthesizer designed for wireless infrastructure applications. The device generates a selectable 25MHz, 50MHz, 125MHz or 156.25MHz clock signal from a 10MHz input with excellent phase jitter performance. The device uses IDT's fourth generation FemtoClock® NG technology for an optimum of high clock frequency and low phase noise performance, combined with a low power consumption and high power supply noise rejection. The device supports a 3.3V voltage supply and is packaged in a small, lead-free (RoHS 6) 32-lead VFQFN package. The extended temperature range supports wireless infrastructure, telecommunication and networking end equipment requirements. The device is a member of the high-performance clock family from IDT.

849N2505I - Block Diagram
849N2505I - Pinout
849N2505I - Block Diagram
849N2505I - Pinout
  • Fourth generation FemtoClock® Next Generation (NG) technology
  • Selectable 25MHz, 50MHz, 125MHz or 156.25MHz output clock synthesized from a 10MHz fundamental mode crystal or 10MHz differential input
  • Four selectable differential LVPECL or LVDS outputs
  • Crystal interface designed for 10MHz, 12pF parallel resonant crystal
  • RMS phase jitter (12kHz - 20MHz): 0.336ps (typical), LVPECL outputs
  • Period jitter: 2.7ps (maximum), LVPECL outputs
  • Full 3.3V supply voltage
  • Available in Lead-free (RoHS 6) package
  • -40°C to 85°C ambient operating temperature

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    849N2505AKILF
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 32 I Yes Tray
    849N2505AKILFT
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 32 I Yes Reel
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