The 840N202I is a highly flexible FemtoClock® NG general purpose, low phase noise Frequency Translator / Synthesizer with alarm and monitoring functions suitable for networking and communications applications. It is able to generate any output frequency in the 1MHz - 250MHz 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 840N202I has three operating modes to support a very broad spectrum of applications: Frequency Synthesizer , High-Bandwidth Frequency Translator and a Low-Bandwidth Frequency Translator.

This device provides two factory-programmed default power-up configurations burned into One-Time Programmable (OTP) memory. The configuration to be used is selected by the CONFIG pin. The two configurations are specified by the customer and are programmed by IDT during the final test phase from an on-hand stock of blank devices. The two configurations may be completely independent of one another.

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

特性

  • Fourth generation FemtoClock® NG technology
  • Universal Frequency Translator/Frequency Synthesizer
  • Two LVCMOS/LVTTL outputs
    Both outputs may be set to use 2.5V or 3.3V output levels
    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
    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): 616fs (typical), Low Bandwidth Mode (FracN)
  • Output supply voltage modes:
    VDD/VDDA/VDDO
    3.3V/3.3V/3.3V
    3.3V/3.3V/2.5V
    2.5V/2.5V/2.5V
  • -40°C to 85°C ambient operating temperature
  • Lead-free (RoHS 6) packaging​

tune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 Reel
Availability
Obsolete VFQFPN 40 I 是的 Tray
Availability
Obsolete VFQFPN 40 I 是的 Reel
Availability

description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
star ICS840N202I Datasheet 数据手册 PDF 576 KB
使用指南与说明
FemtoNG Universal Frequency Translator Ordering Product Information Guide 手册 - 硬件 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-845 Termination - LVCMOS 应用文档 PDF 146 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# : TB1504-01R1 Qty per Reel Standardization for Selective Packages 产品变更通告 PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages 产品变更通告 PDF 50 KB
其他
IDT Clock Generation Overview 概览 PDF 1.83 MB
Timing Fabric for Communications Equipment Overview 概览 PDF 263 KB
IDT Jitter Attenuator Product Overview 概览 PDF 1.95 MB
FemtoClockNG-UniversalFrequencyTranslators 产品简述 PDF 1.06 MB