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XK

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Product Longevity: 2040

55fs Small Package Quartz-based PLL Oscillator

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Overview

The XK devices are a second-generation follow-on to the XF ProXO high-performance oscillators designed for high-performance applications and are often referred to as ProXO II. The XK family is optimized for communications applications requiring ultra-low jitter and is available in the industry’s smallest package. Each device can be factory programmed with up to 3 frequencies and/or output types.

The differential oscillator supports 20 commonly used networking frequencies from 50MHz to 1250MHz. It features 55fs RMS jitter (typ.), excellent immunity to power supply noise and environmental hazards, industry-standard package sizes down to 1.8 x 1.4 mm and operating temperature support from -40°C to 85°C.

XK - Pin Assignment
XK - Pin Assignment
  • Phase jitter (12kHz to 20MHz): 55fs RMS (typ.) at 156.25MHz
  • Package options:
    • 1.8 × 1.4 × 0.85 mm (1.6 × 1.2 mm footprint compatible)
    • 2.0 × 1.6 × 0.85 mm
    • 2.5 × 2.0 × 0.7 mm
    • 3.2 × 2.5 × 0.7 mm
  • Factory programmable with up to three frequencies (from 50MHz to 1250MHz) and/or output types
  • Output types: LVCMOS, LVDS, HCSL, LVPECL, CML
  • Supply voltage: 1.8V, 2.5V or 3.3V
  • Total stability (including temperature, power supply, and aging):
    • ± 30ppm (1.8V)
    • ± 50ppm (2.5V, 3.3V)
  • Operating temperatures: -40°C to +85°C

Documentation

Design & Development

ECAD Models

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

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Diagram of ECAD Models

Models
Type Title Date
Model - IBIS
XK IBIS Model
ZIP 104 KB
1 item
This device is factory-configurable. Try the Custom Part Configuration Utility.

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Resources

Support Communities

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    Hello, as probably not so few know, Renesas MCUs are rather popular with aircon companies.   As of lately I had a need to reverse engineer a protocol in between blocks of a split system.It seem to use a very bizarre format: https://pastebin.com/xKn7Hs6P As ...

    Sep 8, 2020
  2. SUOTA tutorial error

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    Nov 25, 2017
  3. Octopus Linux booting hangs after "Finished Record System Boot/Shutdown in UTMP." on R-CAR M3 board

    Hi,  We are trying to run AGL Octopus Image on R-CAR M3 board (RTP8J77961ASKB0SK0SA05A)  and using the Image files and boot files from Index of /AGL/release/octopus/15.0.2/m3ulcb-nogfx/deploy/images/m3ulcb (automotivelinux.org). Boot sequence is ...

    Aug 9, 2023
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FAQs

  1. Can the Clock Oscillators, Quartz Crystal Oscillators be washed in the PCB assembly process.

    Yes, all these family devices [ (XO): XK, XF, XT, XU, XL & XA ] are sealed and can go through the washing process.

    Jan 1, 1970

Videos & Training

Learn about how the ProXO2 family delivers the industry’s smallest package and uncompromised performance at 55fs typical phase jitter.