Overview

The 810251I is a high performance, low jitter/low phase noise VCXO. The 810251i uses a low frequency and low cost pullable crystal to achieve jitter attenuation for synchronous Ethernet applications. The 810251I can take an input of either 25MHz or 125MHz and produce a single LVCMOS output of 25MHz. The device is packaged in a small 16 lead TSSOP package and is ideal for use on space constrained boards typically encountered in most synchronous ethernet applications.

810251I - Block Diagram
810251I - Pinout
810251I - Block Diagram
810251I - Pinout
  • One single-ended output (LVCMOS or LVTTL levels), output Impedance: 15Ω
  • Phase jitter attenuation by the VCXO-PLL using a 25MHz pullable external crystal (XTAL)
  • Input frequencies: 25MHz or 125MHz
  • Output frequency: 25MHz
  • PLL loop bandwidth adjustable by external components
  • Absolute pull range is ±50 ppm (using the internal oscillator)
  • 25MHz or 125MHz auto input frequency detect
  • Full 3.3V or 2.5V supply voltage
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

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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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    810251AGILF
    circleObsolete
    memory
    view_in_ar
    		TSSOP 16 I Yes Tube
    810251AGILFT
    circleObsolete
    memory
    view_in_ar
    		TSSOP 16 I Yes Reel
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