Skip to main content
8T49N1012 Block Diagram
8T49N1012 Pinout

8T49N1012

FemtoClock® NG 12-Output Frequency Synthesizer

The 8T49N1012 has one fractional-feedback PLL that can be used for frequency synthesis. It is equipped with two integer and eight fractional output dividers, allowing the generation of up to ten different output frequencies, ranging from 8kHz to 1GHz. Eight of these frequencies are completely independent of each other and the inputs. Two more are related frequencies. The twelve outputs may select among LVPECL, LVDS, HSCL or LVCMOS output levels.

This functionality makes it ideal to be used in any frequency synthesis application, including 1G, 10G, 40G and 100G Synchronous Ethernet, OTN, and SONET/SDH, including ITU-T G.709 (2009) FEC rates. The device supports Output Enable inputs and Lock and LOS status outputs.

Features

  • 0.3 ps RMS typical jitter (including spurs), 12 kHz to 20 MHz
  • Operating modes: locked to input signal and free-run
    • Digitally Controlled Oscillator (DCO) mode for software adjustment of operating frequency
  • Operates from a 10 MHz to 40 MHz fundamental-mode crystal such as the IDT 603-40-48 (40 MHz) or 603-38.88-7 (38.88 MHz)
  • Accepts one LVPECL, LVDS, LVHSTL, HCSL, or LVCMOS input clock
    • Accepts frequencies ranging from 10 MHz up to 600 MHz
    • Clock input monitoring
  • Generates 12 LVPECL / LVDS / HCSL or 24 LVCMOS output clocks 
    • Output frequencies ranging from 8 kHz up to 1.0 GHz (diff)
    • Output frequencies ranging from 8 kHz up to 250 MHz (LVCMOS)
  • Two Output Enable control inputs
  • Lock and Loss-of-Signal status outputs
  • Programmable output de-skew adjustments in steps as small as 16 ps
  • Register programmable through I2C or via external I2C EEPROM
  • Bypass clock paths and reference Output for system tests
  • -40°C to +85°C ambient operating temperature
  • Packaged in 72-pin QFN, lead-free RoHS (6)
  • Supported by IDT Timing Commander Software

Product Specification

Phase Jitter Typ RMS (ps)Inputs (#)Input TypeInput Freq (MHz)Outputs (#)Output Voltage (V)Output Freq Range (MHz)Output Type
0.4252HSTL, HCSL, LVDS, LVPECL, LVCMOS, LVHSTL, Crystal10.000000 - 600.000000121.8, 2.5, 3.30.008000 - 1000.000000LVDS, HCSL, LVCMOS, LVPECL

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
8T49N1012-998NLGIActiveNLG72P2VFQFPN72IYesTrayCheck Availability
8T49N1012-998NLGI8ActiveNLG72P2VFQFPN72IYesReelCheck Availability

Documents

Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
no-lock
8T49N1012 Data Sheet Datasheet PDF 1.20 MB Apr 22, 2016
User Guides & Manuals
no-lock
Timing Commander Installation Guide Guide PDF 497 KB Oct 7, 2013
Apps Notes & White Papers
no-lock
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
no-lock
AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
no-lock
AN-860 8T49N28X Frequency Programming Guide Application Note PDF 214 KB Jun 5, 2014
show all (23)
no-lock
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 13, 2014
no-lock
AN-846 Termination - LVDS Application Note PDF 50 KB May 13, 2014
no-lock
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
no-lock
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
no-lock
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
no-lock
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB May 8, 2014
no-lock
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
no-lock
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
no-lock
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
no-lock
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
no-lock
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB May 6, 2014
no-lock
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
no-lock
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
no-lock
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 5, 2014
no-lock
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
no-lock
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
no-lock
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
no-lock
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 2014
no-lock
AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
no-lock
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
Other
no-lock
Flexible Solutions for Fast Edge Rate and Low Phase Noise Requirements Overview PDF 154 KB Jul 1, 2016
no-lock
8T49N1012 Schematic Schematic PDF 53 KB May 2, 2016
no-lock
8T49N1012 FemtoClock NG 12-output Frequency Synthesizer Product Brief Product Brief PDF 631 KB May 2, 2016
show all (9)
no-lock
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
no-lock
IDT Clocks for Xilinx Ultrascale FPGAs Technical Brief PDF 256 KB Apr 25, 2016
no-lock
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 25, 2016
no-lock
IDT Clocks for Altera's Stratix V and Arria V/X FPGAs Technical Brief PDF 238 KB Feb 8, 2016
no-lock
IDT Clocks for SMPTE and Xilinx® 7 Series FPGAs Technical Brief PDF 566 KB Oct 20, 2015
no-lock
IDT Jitter Attenuator Product Overview 简体中文 Overview PDF 1.95 MB Oct 23, 2014

Software & Tools

Title Type Format File Size Datesort icon
no-lock
8T49N1012 IBIS Model Model - IBIS ZIP 390 KB May 2, 2016
no-lock
8T49N1012 Timing Commander Personality File Software TCP 3 MB Jul 14, 2016
no-lock
Timing Commander Installer v1.7.3.3 Software ZIP 17.87 MB May 12, 2016

Related Videos

  • 2013-10-17 UFT Programmable Clock Synthesizer for 100...
  • 2013-10-17 Introduction to Timing Commander™ Software...
  • 2014-04-30 IDT Timing Commander

Evaluation Boards