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.

Features

  • 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​

Product Options

下单器件 ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
840N202CKI-000LF Active NLG40P2 VFQFPN 40 I Yes Tray
Availability
840N202CKI-000LFT Active NLG40P2 VFQFPN 40 I Yes Reel
Availability
840N202CKI-999LF Active NLG40P2 VFQFPN 40 I Yes Tray
Availability
840N202CKI-999LFT Active NLG40P2 VFQFPN 40 I Yes Reel
Availability

技术资料

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
ICS840N202I Datasheet Datasheet PDF 477 KB
使用指南与说明
FemtoNG Universal Frequency Translator Ordering Product Information Guide Manual - User Reference PDF 447 KB
应用指南 &白皮书
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-831 The Crystal Load curve Application Note PDF 308 KB
AN-845 Termination - LVCMOS Application Note PDF 62 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB
AN-839 RMS Phase Jitter Application Note PDF 149 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB
AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
AN-801 Crystal-High Drive Level Application Note PDF 109 KB
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB
PCN / PDN
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 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
Timing Fabric for Communications Equipment Overview Overview PDF 263 KB
IDT Jitter Attenuator Product Overview ( 简体中文) English Overview PDF 1.95 MB
FemtoClockNG-UniversalFrequencyTranslators Product Brief PDF 1.06 MB