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

The 813252I-02 is a PLL based synchronous multiplier that is optimized for PDH or SONET to Ethernet clock jitter attenuation and frequency translation. The device contains two internal frequency multiplication stages that are cascaded in series. The first stage is a VCXO PLL that is optimized to provide reference clock jitter attenuation. The second stage is a FemtoClock® frequency multiplier that provides the low jitter, high frequency Ethernet output clock that easily meets Gigabit and 10 Gigabit Ethernet jitter requirements. Pre-divider and output divider multiplication ratios are selected using device selection control pins. The multiplication ratios are optimized to support most common clock rates used in PDH, SONET and Ethernet applications. The VCXO requires the use of an external, inexpensive pullable crystal. The VCXO uses external passive loop filter components which allows configuration of the PLL loop bandwidth and damping characteristics. The device is packaged in a space-saving 32-VFQFN package and supports industrial temperature range.

特長

  • Two LVPECL outputs Each output supports independent frequency selection at 25MHz, 125MHz, 156.25MHz and 312.5MHz
  • Two differential inputs support the following input types: LVPECL, LVDS, LVHSTL, SSTL, HCSL
  • Accepts input frequencies from 8kHz to 155.52MHz including 8kHz, 1.544MHz, 2.048MHz, 19.44MHz, 25MHz, 77.76MHz, 125MHz and 155.52MHz
  • Attenuates the phase jitter of the input clock by using a lowcost pullable fundamental mode VCXO crystal
  • VCXO PLL bandwidth can be optimized for jitter attenuation and reference tracking using external loop filter connection
  • FemtoClock frequency multiplier provides low jitter, high frequency output
  • Absolute pull range: 50ppm
  • FemtoClock VCO frequency: 625MHz
  • RMS phase jitter @ 125MHz, using a 25MHz crystal (10kHz '- 20MHz): 1.3ps (maximum)
  • 3.3V supply voltage
  • -40°C to 85°C ambient operating temperature
  • Available inlead-free (RoHS 6) package

製品選択

発注型名 Part Status Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 購入/サンプル
Obsolete 32 I はい Tray
Availability
Obsolete 32 I はい Reel
Availability

ドキュメント&ダウンロード

タイトル 他の言語 分類 形式 サイズ 日付
データシート
813252I-02 Datasheet データシート PDF 569 KB
アプリケーションノート、ホワイトペーパー
AN-828 Termination - LVPECL アプリケーションノート PDF 322 KB
AN-831 The Crystal Load curve アプリケーションノート PDF 395 KB
AN-842 Thermal Considerations in Package Design and Selection アプリケーションノート PDF 495 KB
AN-840 Jitter Specifications for Timing Signals アプリケーションノート PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations アプリケーションノート PDF 115 KB
AN-839 RMS Phase Jitter アプリケーションノート PDF 233 KB
AN-836 Differential Input to Accept Single-ended Levels アプリケーションノート PDF 120 KB
AN-835 Differential Input with VCMR being VIH Referenced アプリケーションノート PDF 160 KB
AN-830 Quartz Crystal Drive Level アプリケーションノート PDF 143 KB
AN-827 Application Relevance of Clock Jitter アプリケーションノート PDF 1.15 MB
AN-815 Understanding Jitter Units アプリケーションノート PDF 565 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance アプリケーションノート PDF 136 KB
AN-801 Crystal-High Drive Level アプリケーションノート PDF 202 KB
AN-806 Power Supply Noise Rejection アプリケーションノート PDF 438 KB
AN-805 Recommended Ferrite Beads アプリケーションノート PDF 121 KB
PCN / PDN
PDN# CQ-14-05 MARKET DECLINED PRODUCT DISCONTINUANCE NOTICE 製品中止通知 PDF 192 KB
PCN# : A1208-01R1 Gold to Copper Wire 製品変更通知 PDF 254 KB
Downloads
813252I-02 IBIS モデル-IBIS ZIP 37 KB