Diodes Incorporated

可編程晶體振盪器 (XO)

可編程 (HiFlex) 晶體振盪器 XO 系列產品,在標準 7.0 x 5.0 mm 和 5.0 x 3.2 mm 陶瓷封裝內併入了微型 AT 裁切石英晶體諧振器及具高度彈性的振盪器 IC。可編程振盪器 IC 內含極低抖動的 PLL,因此可依需求產生任何頻率,專門針對網路、儲存、視訊和其他嵌入式產品應用等高頻率及低抖動的產品應用而設計並測試。

Diodes Incorporated 的 HiFlex 時脈產生器兼具高效能及彈性,可提供 0.3 ps (RMS) 超低抖動效能的高頻率輸出。Diodes Incorporated 的 HiFlex 時脈不僅適用於網路及電信產品應用,對於需要高效能時脈產生器之產品應用,更是極佳選擇。或者,您也能選用特別針對您需求而設計的工具,製作自己的 HiFlex XO 零件。試試「製作可編程 XO 零件」工具。


  • 下載石英晶體與石英晶體振盪器產品選擇工具,取得我們廣大產品組合的詳細資訊與規格書。

Programmable Crystal Oscillator (XO) Details


  • CMOS: 10 to 212.5 MHz
  • LVPECL: 10 to 360 MHz (other high frequencies available upon request)
  • Low phase noise jitter: < 0.8ps (typ)
  • Fast rise/fall time for LVPECL: 350ps (max)
  • High precision and tight frequency stability
  • ±25 ppm to ±50 ppm
  • Industry-standard 7.0 x 5.0 mm and 5.0 x 3.2 mm packages
  • Pb-Free and RoHS/Green compliant
  • Temperature range: -20 ~ +70 ℃; -40 ~ +85 ℃
  • Available on tape & reel


  • Networking
  • Storage
  • Video
  • PON
  • Other embedded applications

Programmable Crystal Oscillator (XO) FAQs

Define Stability?

Parameter used to define the maximum deviation of the actual frequency from the specified nominal frequency over changes in operating conditions. Oscillator stability is usually rated as inclusive of temperature, load, initial calibration, supply, and aging effects.

Is there a replacement for an obsolete part?

Not all obsolete parts will have a direct replacement. However, we recommended that you contact your regional sales office.

What are the causes of jitter?

Jitter can be cause by: poor decoupling to the Vcc and GND, signal source with heavy jitter, slow edge rate which will provide additional time to introduce jitter to the signal. Additional information can be found in Application Note 24: Designing for Minimal Jitter when using Clock Buffers

What are the types of jitter?

There are several types of jitter, but the main ones are: cycle-to-cycle jitter, period jitter, half period jitter, and peak-to-peak jitter. Jitter terminology can be found in AB36: Jitter Measurement Techniques at Application Brief No. 36 or Application Note No. 27.

What is cycle-to-cycle jitter?

Cycle-to-cycle jitter is the difference in the clock's period between two consecutive cycles and is expressed in units of + pico-seconds. This is because it can be either leading or lagging from the ideal output waveform.

What is half-period jitter?

Half-Period Jitter is the measure of maximum change in a clock's output transition from its ideal position during one-half period. It is measured as: tjit(half-period) = thalf-period n – 1/2 ƒo, where ƒo is the frequency of the input signal.

What is Jitter?

Measurement of the deviation of a clock period from its ideal position as calculated with respect to the average operating frequency under a fixed set of operating conditions.

What is PPM?

Part per million is used to measure the deviation of the output signal (+/-20 ppM = +/-0.002%).

What is the lead finish for Pericom products? What about lead-free?

All Pericom's products that are not lead-free are composed of 85% Sn and 15% Pb. For lead-free products, they are composed of 100% matte Sn. Lead-free products are marked and ordered with the letter "E" suffix at the end of the part number.

What is XO or SO?

A crystal (or SAW) oscillator outputs a precise fixed-frequency clock signal at a specified nominal value, used for data and processor timing.

Where can I find Mean Time Before Failure (MTBF) or Failures In Time (FIT) values for Pericom products?

FIT and MTBF data can be found at Pericom's Quality webpage.

Where can I find the information on your Pb-free and "Green" packaging?

Lead (Pb)-Free and Green information can be found on individual datasheets or Pb-Free & Green Page.

Why is the marking on the FCT devices different from the datasheet?

Sometimes the speed grades and the package nomenclature for our FCT devices may be swapped around. Full explanation for nomenclature information can be found under Packaging Support Documentation.