本公司設計出符合汽車規格的晶體振盪器 (XO)，以滿足汽車產品應用嚴格的要求，其零件編號包含「Q」標示，方便辨識。這些晶體振盪器是在通過嚴格的 IATF 16949 標準的設施中製造，且能對 VDA6.3 進行客戶稽核。這些零件皆提供 PPAP (生產零件核准程序) 文件支援，因此符合汽車電子產業的所有要求。
除此之外，所有符合汽車規格的晶體振盪器 (XO) 均依照 AECQ-200 及 QAP-81 進行認證，以涵蓋石英諧振器和 XO IC，而非使用 AEC-Q100 (僅針對 IC 定義)。本公司計畫於 2021 年為符合汽車規格的新 XO 產品逐步改用 AECQ-104 認證標準，但不會針對先前符合 AECQ-200 + QAP-81 認證的產品改採 AEC-Q104 重新認證 (AECQ-200 + QAP-81 認證標準與 AECQ-0104 認證標準主要差別在於測試產品的數量及額外的 X 光檢查)。
For VCXO and VCTCXO, the recomended method of defining pullability. The value is relative to the specified nominal frequency, net of the device's relative pull range and variations due to stability factors (such as temperature, aging, etc).
For VCXO and VCTCXO, a parameter used to define the maximum frequency pull from the actual operating frequency under a given set of operating conditions.
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.
Please go to the Media & Downloads page. From there please click on the tab called "FCP Support Documents".
In that section, you should be able to access all the links related to each product, in terms of reflow, test circuits and tape and reel information. We apologize for the inconvenience.
Not all obsolete parts will have a direct replacement. However, we recommended that you contact your regional sales office.
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
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.
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.
FCP is Frequency Control Product. They include crystals, crystal oscillators (XO), voltage control oscillators (VCXO), and TCXO. XO has IC and crystal integrated together as a component for quality easy use in system designs. For more product information, please visit company website: https://www.diodes.com/products/connectivity-and-timing/crystal-and-crystal-oscillator/
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.
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.
Part per million is used to measure the deviation of the output signal (+/-20 ppM = +/-0.002%).
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.
A crystal (or SAW) oscillator outputs a precise fixed-frequency clock signal at a specified nominal value, used for data and processor timing.
FIT and MTBF data can be found at Pericom's Quality webpage.
Lead (Pb)-Free and Green information can be found on individual datasheets or Pb-Free & Green Page.
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.
