NOTICE - The following device(s) are recommended alternatives:

The 840N022I is a LVCMOS/LVTTL clock synthesizer designed for Ethernet applications. The device generates a selectable 125MHz or 62.5MHz clock signal with excellent phase jitter performance. The device uses IDT's fourth generation FemtoClock® NG technology for an optimum of high clock frequency, low phase noise performance and low power consumption.The device supports 2.5V or 3.3V voltage supply and is packaged in a small, lead-free (RoHS 6) 8-lead TSSOP package. The extended temperature range supports wireless infrastructure, telecommunication, and networking end equipment requirements.

Features

  • Fourth generation FemtoClock® NG technology
  • 125MHz output clock synthesized from a 25MHz fundamental mode crystal
  • One LVCMOS/LVTTL clock output
  • Crystal interface designed for 25MHz, 12pF parallel resonant crystal
  • RMS phase jitter @ 125MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.148ps (maximum)
  • RMS phase jitter @ 125MHz, using a 25MHz crystal (12kHz - 20MHz): 0.479ps (maximum)
  • LVCMOS interface levels for the control inputs
  • Full 2.5V or 3.3V supply voltage
  • Available in lead-free (RoHS 6) package
  • -40°C to 85°C ambient operating temperature

Product Options

下单器件 ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
840N022BGILF Obsolete PGG8 TSSOP 8 I Yes Tube
Availability
840N022BGILFT Obsolete PGG8 TSSOP 8 I Yes Reel
Availability

Documentation & Downloads

文档标题 他の言語 文档类型 文档格式 文件大小
数据手册与勘误表
840N022 Datasheet Datasheet PDF 348 KB
应用指南 &白皮书
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-831 The Crystal Load curve Application Note PDF 395 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 128 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-837 Overdriving the Crystal Interface Application Note PDF 133 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 KB
AN-832 Timing Budget and Accuracy Application Note PDF 131 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 143 KB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 136 KB
AN-806 Power Supply Noise Rejection Application Note PDF 438 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
AN-801 Crystal-High Drive Level Application Note PDF 202 KB
PCN / PDN
PDN# : CQ-15-04 Quarterly Market Declined PDN Product Discontinuation Notice PDF 545 KB
PCN# : W1308-01 Change of Passivation Thickness Product Change Notice PDF 941 KB
其它
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB

Boards & Kits