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Cardinal Oscillator Crystal解決方案

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瀏覽:- 發(fā)布日期:2023-09-01 11:09:52【
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Cardinal Oscillator Crystal解決方案,美國知名元器件供應商Cardinal公司,主要向世界各地提供低功耗低成本的石英晶振產(chǎn)品為主,隨著自身的技術(shù)增長,Cardinal公司開始追尋自身偉大的目標,致力于為用戶提供具有核心競爭力的產(chǎn)品,以及提供優(yōu)質(zhì)的產(chǎn)品為主要目標,同時在選擇上面擁有超級靈活性和多元化,使得用戶可以隨時在Cardinal公司找到自身理想的產(chǎn)品,以及滿意的解決方案,也因此更多用戶選擇與之建立良好的合作關(guān)系。
在開發(fā)電子組件時,其中一個步驟包括選擇合適的頻率控制產(chǎn)品。開始時的基本問題是安裝石英晶體還是振蕩器。為了做出正確的決定,需要考慮幾個參數(shù)。這些包括應用、設(shè)備或行業(yè)的許多不同要求。除了空間要求、頻率穩(wěn)定性和專業(yè)知識之外,開發(fā)成本也起著重要作用。

石英晶體還是SPXO晶體振蕩器?這就是問題所在!在下文中,我們將更深入地了解一個組件或另一個組件是更好選擇的情況:

當石英晶體是正確的選擇時

“答石英晶體最適合開發(fā)人員想要構(gòu)建自己的電子振蕩器,允許他們調(diào)整或優(yōu)化所有相關(guān)參數(shù)的時候。這當然需要一定的努力:電子振蕩器必須構(gòu)建并適應諧振器,以確保在整個工作溫度范圍內(nèi)的振蕩穩(wěn)定性和凝聚力,”產(chǎn)品經(jīng)理解釋道。例如,電路元件包括電容器,必須選擇電容器,以便實現(xiàn)石英晶體的特定負載能力。如果不是這種情況,可能會出現(xiàn)與額定頻率相當大的偏差。因此,必須事先明確定義石英晶體的規(guī)格,以避免頻率偏差。

圖12

然而,由于石英晶體比晶體振蕩器便宜,所以它們是更大數(shù)量的更好選擇。此外,電路板上必須有足夠的空間:帶電路的壓電晶體比晶體振蕩器需要更多的空間。

完美協(xié)調(diào)的完整解決方案:晶體振蕩器

當使用振蕩器內(nèi)部安裝電路的所有元件已經(jīng)完全匹配。與帶電路的石英晶體相比,振蕩器通常占用更少的空間。振蕩器總是包含一個頻率控制元件,在我們的例子中是一個石英晶體。這是插入到皮爾斯電路,導致石英晶體振蕩器。Cardinal Oscillator Crystal解決方案.

圖13

振蕩器電路

因此,有源晶體振蕩器是最節(jié)省空間的選擇:一切都很緊湊,內(nèi)置在一個組件中,開發(fā)人員不必圍繞壓電晶體設(shè)計電路。該元件特別適用于小批量生產(chǎn),因為它消除了耗時的電路元件優(yōu)化和調(diào)諧的需要。

振蕩器的另一個優(yōu)點是,當使用石英晶體時,面積與厚度之比不能低于某個值。如果不保持這個比例,它將對電參數(shù)產(chǎn)生負面影響。這意味著低頻(10MHz以下)不再能在更小的設(shè)計中處理。這一限制不適用于振蕩器,因為振蕩器內(nèi)部有一個IC。這同樣適用于頻率更高的電路,石英晶體也能更快地達到其物理極限。由于內(nèi)置IC,還可以通過溫度進行補償(TCXOs)。這允許開發(fā)者有更多的操作空間,以滿足相應應用程序及其外部影響的要求。這種偏差還允許±0.05ppm的頻率穩(wěn)定性。最好的情況下,石英晶體的含量低于百萬分之+-10。Cardinal Oscillator Crystal解決方案.

原廠代碼 晶振廠家 描述n 系列 Type 類型 Frequency 頻率 Output 輸出 Frequency Stability頻率穩(wěn)定度
CPPC5L-A7BR-66.0PD Cardinal Components Inc. OSC XO 66.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 66MHz CMOS ±25ppm
CPPC5L-A7BR-66.0TS Cardinal Components Inc. OSC XO 66.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 66MHz CMOS ±25ppm
CPPC5Z-A7BR-4.0TS Cardinal Components Inc. OSC XO 4.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 4MHz CMOS ±25ppm
CPPC5L-A7BR-69.102PD Cardinal Components Inc. OSC XO 69.102MHZ CMOS SMD FIPO™ CPP XO (Standard) 69.102MHz CMOS ±25ppm
CPPC5L-BR-125.0TS Cardinal Components Inc. OSC XO 125.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 125MHz CMOS ±25ppm
CPPC5LT-A7BR-48.0TS Cardinal Components Inc. OSC XO 48.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 48MHz CMOS ±25ppm
CPPC5-A5BP-125.0TS Cardinal Components Inc. OSC XO 125.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 125MHz CMOS ±50ppm
CPPC5LZ-A7BP-100.0TS Cardinal Components Inc. OSC XO 100.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 100MHz CMOS ±50ppm
CPPC5-A7BP-108.0TS Cardinal Components Inc. OSC XO 108.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 108MHz CMOS ±50ppm
CPPC5LZ-A7BP-14.318PD Cardinal Components Inc. OSC XO 14.318MHZ CMOS SMD FIPO™ CPP XO (Standard) 14.318MHz CMOS ±50ppm
CPPC5L-A5BR-108.0TS Cardinal Components Inc. OSC XO 108.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 108MHz CMOS ±25ppm
CPPC7-A5BD-40.0TS Cardinal Components Inc. OSC XO 40.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 40MHz CMOS ±60ppm
CPPC7-A5BP-32.106TS Cardinal Components Inc. OSC XO 32.106MHZ CMOS SMD FIPO™ CPP XO (Standard) 32.106MHz CMOS ±50ppm
CPPC7-A5BP-5.0TS Cardinal Components Inc. OSC XO 5.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 5MHz CMOS ±50ppm
CPPC7-A5BR-27.0PD Cardinal Components Inc. OSC XO 27.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 27MHz CMOS ±25ppm
CPPC7-A7B6-11.0592TS Cardinal Components Inc. OSC XO 11.0592MHZ CMOS SMD FIPO™ CPP XO (Standard) 11.0592MHz CMOS ±100ppm
CPPC7-A7B6-14.7456TS Cardinal Components Inc. OSC XO 14.7456MHZ CMOS SMD FIPO™ CPP XO (Standard) 14.7456MHz CMOS ±100ppm
CPPC7-A7B6-2.176TS Cardinal Components Inc. OSC XO 2.176MHZ CMOS SMD FIPO™ CPP XO (Standard) 2.176MHz CMOS ±100ppm
CPPC5-A7BP-110.0TS Cardinal Components Inc. OSC XO 110.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 110MHz CMOS ±50ppm
CPPC7-A7B6-20.0TS Cardinal Components Inc. OSC XO 20.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 20MHz CMOS ±100ppm
CPPC7-A7B6-32.0TS Cardinal Components Inc. OSC XO 32.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 32MHz CMOS ±100ppm
CPPC7-A7B6-40.0TS Cardinal Components Inc. OSC XO 40.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 40MHz CMOS ±100ppm
CPPC7-A7BP-1.0TS Cardinal Components Inc. OSC XO 1.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 1MHz CMOS ±50ppm
CPPC7-A7BP-10.0TS Cardinal Components Inc. OSC XO 10.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 10MHz CMOS ±50ppm
CPPC5LZ-A7BP-50.0TS Cardinal Components Inc. OSC XO 50.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 50MHz CMOS ±50ppm
CPPC7-A7BP-11.0592TS Cardinal Components Inc. OSC XO 11.0592MHZ CMOS SMD FIPO™ CPP XO (Standard) 11.0592MHz CMOS ±50ppm
CPPC7-A7BP-14.0TS Cardinal Components Inc. OSC XO 14.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 14MHz CMOS ±50ppm
CPPC7-A7BP-14.7456TS Cardinal Components Inc. OSC XO 14.7456MHZ CMOS SMD FIPO™ CPP XO (Standard) 14.7456MHz CMOS ±50ppm
CPPC7-A7BP-149.86TS Cardinal Components Inc. OSC XO 149.86MHZ CMOS SMD FIPO™ CPP XO (Standard) 149.86MHz CMOS ±50ppm
CPPC7-A7BP-2.0TS Cardinal Components Inc. OSC XO 2.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 2MHz CMOS ±50ppm
CPPC5LZ-A7BP-88.888PD Cardinal Components Inc. OSC XO 88.888MHZ CMOS SMD FIPO™ CPP XO (Standard) 88.888MHz CMOS ±50ppm
CPPC7-A7BP-20.0TS Cardinal Components Inc. OSC XO 20.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 20MHz CMOS ±50ppm
CPPC5L-A7BR-25.0TS Cardinal Components Inc. OSC XO 25.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 25MHz CMOS ±25ppm
CPPC5LZ-A7BR-20.0TS Cardinal Components Inc. OSC XO 20.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 20MHz CMOS ±25ppm
CPPC5L-A7BR-58.9824PD Cardinal Components Inc. OSC XO 58.9824MHZ CMOS SMD FIPO™ CPP XO (Standard) 58.9824MHz CMOS ±25ppm
CPPC5L-A7BR-62.208PD Cardinal Components Inc. OSC XO 62.208MHZ CMOS SMD FIPO™ CPP XO (Standard) 62.208MHz CMOS ±25ppm
CPPC5Z-A7BR-20.0TS Cardinal Components Inc. OSC XO 20.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 20MHz CMOS ±25ppm
CPPC5L-A7BR-69.12PD Cardinal Components Inc. OSC XO 69.12MHZ CMOS SMD FIPO™ CPP XO (Standard) 69.12MHz CMOS ±25ppm
CPPC5L-A7BR-77.76PD Cardinal Components Inc. OSC XO 77.76MHZ CMOS SMD FIPO™ CPP XO (Standard) 77.76MHz CMOS ±25ppm
CPPC5L-B6-97.030887TS Cardinal Components Inc. OSC XO 97.030887MHZ CMOS SMD FIPO™ CPP XO (Standard) 97.030887MHz CMOS ±100ppm
CPPC5LZ-A5BP-41.6665TS Cardinal Components Inc. OSC XO 41.6665MHZ CMOS SMD FIPO™ CPP XO (Standard) 41.6665MHz CMOS ±50ppm
CPPC5L-A7B6-20.0TS Cardinal Components Inc. OSC XO 20.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 20MHz CMOS ±100ppm
CPPC7L-BR-26.0PD Cardinal Components Inc. OSC XO 26.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 26MHz CMOS ±25ppm
CPPC7LZ-A7BR-24.0TS Cardinal Components Inc. OSC XO 24.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 24MHz CMOS ±25ppm
CPPC7LZ-A7BP-10.0TS Cardinal Components Inc. OSC XO 10.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 10MHz CMOS ±50ppm
CPPC7L-BR-30.0TS Cardinal Components Inc. OSC XO 30.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 30MHz CMOS ±25ppm
CPPC7LZ-A7BR-83.333TS Cardinal Components Inc. OSC XO 83.333MHZ CMOS SMD FIPO™ CPP XO (Standard) 83.333MHz CMOS ±25ppm
CPPC7Z-A7B6-20.0TS Cardinal Components Inc. OSC XO 20.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 20MHz CMOS ±100ppm
CPPC7LZ-A7BR-27.002TS Cardinal Components Inc. OSC XO 27.002MHZ CMOS SMD FIPO™ CPP XO (Standard) 27.002MHz CMOS ±25ppm
CPPC7LZ-A7BR-27.0TS Cardinal Components Inc. OSC XO 27.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 27MHz CMOS ±25ppm
CPPC7LZ-A7BP-22.4TS Cardinal Components Inc. OSC XO 22.40MHZ CMOS SMD FIPO™ CPP XO (Standard) 22.4MHz CMOS ±50ppm
CPPC7LT-A7BP-1.8432TS Cardinal晶振 OSC XO 1.8432MHZ CMOS SMD FIPO™ CPP XO (Standard) 1.8432MHz CMOS ±50ppm
CPPC7LZ-A7BP-24.0TS Cardinal Components Inc. OSC XO 24.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 24MHz CMOS ±50ppm
CPPC7Z-A7B6-6.0TS Cardinal Components Inc. OSC XO 6.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 6MHz CMOS ±100ppm
CPPC7LZ-A7BR-29.4912TS Cardinal Components Inc. OSC XO 29.4912MHZ CMOS SMD FIPO™ CPP XO (Standard) 29.4912MHz CMOS ±25ppm
CPPC7LZ-BP-11.3541TS Cardinal Components Inc. OSC XO 11.3541MHZ CMOS SMD FIPO™ CPP XO (Standard) 11.3541MHz CMOS ±50ppm
CPPC7LT-A7BP-14.7456TS Cardinal Components Inc. OSC XO 14.7456MHZ CMOS SMD FIPO™ CPP XO (Standard) 14.7456MHz CMOS ±50ppm
CPPC7L-BP-133.0TS Cardinal Components Inc. OSC XO 133.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 133MHz CMOS ±50ppm
CPPC7LZ-A5BP-32.0TS Cardinal Components Inc. OSC XO 32.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 32MHz CMOS ±50ppm
CPPC7L-BP-25.0PD Cardinal Components Inc. OSC XO 25.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 25MHz CMOS ±50ppm
CPPC7LZ-A7BR-33.3TS Cardinal Components Inc. OSC XO 33.3MHZ CMOS SMD FIPO™ CPP XO (Standard) 33.3MHz CMOS ±25ppm
CPPC7LZ-BR-66.6666TS Cardinal Components Inc. OSC XO 66.6666MHZ CMOS SMD FIPO™ CPP XO (Standard) 66.6666MHz CMOS ±25ppm
CPPC7LZ-A5BR-34.56TS Cardinal Components Inc. OSC XO 34.56MHZ CMOS SMD FIPO™ CPP XO (Standard) 34.56MHz CMOS ±25ppm
CPPC7L-BP-4.0TS Cardinal Components Inc. OSC XO 4.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 4MHz CMOS ±50ppm
CPPC7LT-A7BP-5.0TS Cardinal Components Inc. OSC XO 5.000MHZ CMOS SMD FIPO™ CPP XO (Standard) 5MHz CMOS ±50ppm
CPPC7LZ-A5BR-7.3728TS Cardinal Components Inc. OSC XO 7.3728MHZ CMOS SMD FIPO™ CPP XO (Standard) 7.3728MHz CMOS ±25ppm
CPPC7LZ-A7BR-4.096TS Cardinal Components Inc. OSC XO 4.096MHZ CMOS SMD FIPO™ CPP XO (Standard) 4.096MHz CMOS ±25ppm
CPPC7L-BP-4.194304TS Cardinal Components Inc. OSC XO 4.194304MHZ CMOS SMD FIPO™ CPP XO (Standard) 4.194304MHz CMOS ±50ppm
In developing an electronic assembly, one of the steps involved includes choosing the appropriate frequency control product. The basic question at the outset is whether to install a quartz crystal or an oscillator. To reach the right decision, several parameters need to be considered. These include the many different requirements of the application, the device, or the industry. In addition to space requirements, frequency stability, and expertise, development costs also play a notable role.

Quartz crystal or oscillator? That is the question! In the following, we’ll take a closer look at situations when one component or the other is the better choice:

When a quartz crystal is the way to go

“A quartz crystal is best suited when the developer wants to build their own electronic oscillator, allowing them to tune or optimize all the relevant parameters. This of course requires a certain amount of effort: The electronic oscillator has to be built and adapted to the resonator in order to ensure oscillation stability as well as cohesion over the entire operating temperature range,” explains Product Manager. Circuit components include, for example, capacitors, which must be selected so that the quartz crystal’s specific load capacity is achieved. If this is not the case, considerable deviations from the specified nominal frequency may occur. The specifications for the quartz crystal must therefore be clearly defined in advance to avoid frequency deviations.

However, since quartz crystals are less expensive than crystal oscillators, they are a better choice for larger quantities. In addition, there must be sufficient space on the circuit board: A piezoelectric crystal with circuitry requires more space than a crystal oscillator.

The perfectly coordinated complete solution: The crystal oscillator

When using an oscillator, all components of the internally installed circuitry are already perfectly matched. In contrast to a quartz crystal with circuit, the oscillator usually takes up less space. An oscillator always contains a frequency control component—in our case, an quartz crystal. This is inserted into the Pierce circuit, which causes the quartz crystal to oscillate.

Pierce circuit

The oscillator is therefore the most space-saving alternative: Everything is compact and built into one component, and the developer does not have to design a circuit around the piezoelectric crystal. The component is particularly suitable for low volumes because it eliminates the need for time-consuming optimization and tuning of circuit components.

Another advantage of the oscillator is that when using a quartz crystal, the ratio of area to thickness must not fall below a certain value. If this ratio is not maintained, it will have a negative effect on the electrical parameters. This means that low frequencies (below 10 MHz) can no longer be handled in smaller designs. This limitation does not apply to oscillators because they have an IC inside. The same applies to circuits with higher frequencies—here, too, quartz crystals reach their physical limits more quickly. Due to the internal IC, compensations via temperature are also possible (TCXOs). This allows the developer more room to maneuver in order to meet the requirements of the respective application and its external influences. This leeway also allows a frequency stability of +-0.05 parts per million. At best, quartz crystals are specified with just under +-10 parts per million.