The 813N2532I device uses IDT's fourth generation FemtoClock® NG technology for optimal high clock frequency and low phase noise performance, combined with a low power consumption and high power supply noise rejection. The 813N2532I is a PLL based synchronous multiplier that is optimized for PDH or SONET to Ethernet clock jitter attenuation and frequency translation. The 813N2532I is a fully integrated Phase Locked loop utilizing a FemtoClock NG Digital VCXO that provides the low jitter, high frequency SONET/PDH output clock that easily meets OC-48 jitter requirements. This VCXO technology simplifies PLL design by replacing the pullable crystal requirement of analog VCXOs with a fixed 27MHz generator crystal. Jitter attenuation down to 10Hz is provided by an external loop filter. 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 device requires the use of an external, inexpensive fundamental mode 27MHz crystal. The device is packaged in a space-saving 32-VFQFN package and supports commercial temperature range.

特長

  • Fourth generation FemtoClock® NG technology
  • Two LVPECL output pairs
  • Output frequencies: 19.44MHz, 25MHz, 125MHz, 155.52MHz and 156.25MHz
  • Two differential inputs support the following input types: LVPECL, LVDS, LVHSTL, HCSL
  • Accepts input frequencies from 8kHz to 38.88MHz including 8kHz, 19.44MHz, 25MHz and 38.88MHz
  • Crystal interface optimized for a 27MHz, 10pF parallel resonant crystal
  • Attenuates the phase jitter of the input clock by using a low-cost fundamental mode crystal
  • Customized settings for jitter attenuation and reference tracking using external loop filter connection
  • FemtoClock NG frequency multiplier provides low jitter, high frequency output
  • Absolute pull range: ±100ppm
  • Power supply noise rejection (PSNR): -95dB (typical)
  • RMS phase jitter @ 156.25MHz, using a 27MHz crystal (12kHz - 20MHz): 0.6ps (typical)
  • RMS phase jitter @ 155.52MHz, using a 27MHz crystal (12kHz - 20MHz): 0.622ps (typical)
  • RMS phase jitter @ 125MHz, using a 27MHz crystal (12kHz - 20MHz): 0.6ps (typical)
  • 3.3V supply voltage
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

製品選択

発注型名 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 購入/サンプル
Obsolete VFQFPN 32 I はい Tray
Availability
Obsolete VFQFPN 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
813N2532I Data Sheet データシート PDF 643 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
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility 製品変更通知 PDF 983 KB
PDN# : TP-19-06 Manufacturing Discontinuance Notice 製品中止通知 PDF 1016 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location 製品変更通知 PDF 583 KB
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location 製品変更通知 PDF 596 KB
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location 製品変更通知 PDF 544 KB
PCN# : W1308-01 Change of Passivation Thickness 製品変更通知 PDF 941 KB
Downloads
813N2532I IBIS Model モデル-IBIS ZIP 72 KB
その他資料
Timing Solutions Products Overview 概要 PDF 4.11 MB
IDT Clock Generation Overview (Japanese) English 概要 PDF 2.19 MB
IDT Clock Distribution Overview (Japanese) English 概要 PDF 7.79 MB