The 849N202I is a highly flexible FemtoClock® NG general purpose, low phase noise Universal Frequency Translator™ / Synthesizer with alarm and monitoring functions suitable for networking and communications applications. It is able to generate any output frequency in the 0.98MHz - 312.5MHz range and most output frequencies in the 312.5MHz - 1,300MHz range (see Table 3 for details). A wide range of input reference clocks and a range of low-cost fundamental mode crystal frequencies may be used as the source for the output frequency.

The 849N202I has three operating modes to support a very broad spectrum of applications.

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

特性

  • 4TH generation FemtoClock® NG technology
  • Universal Frequency Translator (UFT) / Frequency Synthesizer
  • Two outputs, individually programmable as LVPECL or LVDS
    Both outputs may be set to use 2.5V or 3.3V output levels
    Programmable output frequency: 0.98MHz up to 1,300MHz
  • Zero ppm frequency translation
  • 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
    Power-up default configuration pin or register selectable
    Configurations customized via One-Time Programmable ROM
    Settings may be overwritten after power-up via I2C
    I2C Serial interface for register programming
  • RMS phase jitter at 125MHz, using a 40MHz crystal(12kHz - 20MHz): 510fs (typical), Low Bandwidth Mode (FracN)
  • RMS phase jitter at 400MHz, using a 40MHz crystal(12kHz - 40MHz): 321fs (typical), Synthesizer Mode (Integer FB)
  • Output supply voltage modes:
    VCC/VCCA/VCCO
    3.3V/3.3V/3.3V
    3.3V/3.3V/2.5V (LVPECL only)
    2.5V/2.5V/2.5V
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

产品选择

器件号 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Obsolete VFQFPN 40 I 是的 Tray
Availability
Obsolete VFQFPN 40 I 是的 Tray
Availability
Obsolete VFQFPN 40 I 是的 Tray
Availability
Obsolete VFQFPN 40 I 是的 Tray
Availability

文档

文档标题 language 类型 文档格式 文件大小 日期
数据手册与勘误表
849N202 Datasheet 数据手册 PDF 1.49 MB
使用指南与说明
FemtoNG Universal Frequency Translator Ordering Product Information Guide 手册 - 用户参考 PDF 270 KB
应用指南 & 白皮书
AN-828 Termination - LVPECL 应用文档 PDF 322 KB
AN-831 The Crystal Load curve 应用文档 PDF 395 KB
AN-844 Termination - AC Coupling Clock Receivers 应用文档 PDF 170 KB
AN-846 Termination - LVDS 应用文档 PDF 133 KB
AN-842 Thermal Considerations in Package Design and Selection 应用文档 PDF 495 KB
AN-840 Jitter Specifications for Timing Signals 应用文档 PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations 应用文档 PDF 115 KB
AN-839 RMS Phase Jitter 应用文档 PDF 233 KB
AN-832 Timing Budget and Accuracy 应用文档 PDF 131 KB
AN-833 Differential Input Self Oscillation Prevention 应用文档 PDF 180 KB
AN-834 Hot-Swap Recommendations 应用文档 PDF 153 KB
AN-835 Differential Input with VCMR being VIH Referenced 应用文档 PDF 160 KB
AN-836 Differential Input to Accept Single-ended Levels 应用文档 PDF 120 KB
AN-837 Overdriving the Crystal Interface 应用文档 PDF 133 KB
AN-830 Quartz Crystal Drive Level 应用文档 PDF 143 KB
AN-815 Understanding Jitter Units 应用文档 PDF 565 KB
AN-827 Application Relevance of Clock Jitter 应用文档 PDF 1.15 MB
AN-802 Crystal-Measuring Oscillator Negative Resistance 应用文档 PDF 136 KB
AN-801 Crystal-High Drive Level 应用文档 PDF 202 KB
AN-805 Recommended Ferrite Beads 应用文档 PDF 121 KB
AN-806 Power Supply Noise Rejection 应用文档 PDF 438 KB
AN-803 Crystal Timing Budget and Accuracy for Renesas Timing Clock Products 应用文档 PDF 108 KB
PCN / PDN
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility 产品变更通告 PDF 983 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location 产品变更通告 PDF 583 KB
PCN# : W1308-01 Change of Passivation Thickness 产品变更通告 PDF 941 KB
PDN# : TP-19-06 Manufacturing Discontinuance Notice 产品停产通告 PDF 1016 KB
其他
IDT Clock Generation Overview 日本語 概览 PDF 1.83 MB
Timing Fabric for Communications Equipment Overview 概览 PDF 263 KB
FemtoClockNG-UniversalFrequencyTranslators 产品简述 PDF 1.06 MB

下载

文档标题 language 类型 文档格式 文件大小 日期
模型
849N202I IBIS Model 模型 - IBIS ZIP 211 KB