Overview

The 849N212I is a highly flexible FemtoClock NG general purpose, low phase noise Universal Frequency Translator / Synthesizer with alarm and monitoring function suitable for networking and communications applications. The 849N212I has three operating modes to support a very broad spectrum of applications: frequency Synthesizer, high-bandwidth frequency translator, and low-bandwidth frequency translator. This device provides two factory-programmed default power-up configurations burned into One-Time Programmable (OTP) memory. To implement other configurations, these power-up default settings can be overwritten after power-up using the I2C interface and the device can be completely reconfigured.

To see other devices in this product family, visit the Universal Frequency Translators page.

849N212I Block Diagram
849N212I Block Diagram
  • Two Output Universal Frequency Translator/Frequency Synthesizer
  • One programmable as LVPECL or LVDS, One LVCMOS
  • Programmable output frequency: 1.0MHz to 250MHz
  • Two differential inputs support the following input types: LVPECL, LVDS, LVHSTL, HCSL
  • Input frequency range: 8kHz - 710MHz , Crystal input frequency range: 16MHz - 40MHz
  • Two factory-set register configurations for power-up default state
  • I2C Serial interface for register programming
  • RMS phase jitter at 125MHz, using a 40MHz crystal (12kHz - 20MHz): 558fs (typical), Low Bandwidth Mode (FracN)
  • RMS phase jitter at 125MHz, using a 100MHz input clock (12kHz - 20MHz): 388fs (typical), High Bandwidth Mode (Integer FB)
  • -40\xB0C to 85\xB0C 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.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    849N212CKI-004LF
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 40 I Yes Tray
    849N212CKI-999LF
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 40 I Yes Tray
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product