TCXO晶振對于網(wǎng)絡(luò)傳輸速度的影響
來源:http://www.11ed.cn 作者:金洛鑫電子 2024年01月03
當(dāng)溫度穩(wěn)定性要求超出標(biāo)準(zhǔn)晶體時鐘振蕩器[XO]或壓控晶體振蕩器[VCXO]的范圍時,使用TCXO[溫度補(bǔ)償晶體振蕩器]器件。TCXO提供了一種抵消晶體振蕩器中溫度變化引起的頻率變化的方法,最終改變了輸出頻率。TCXO晶振為設(shè)計(jì)工程師提供了一種設(shè)備,可以彌合標(biāo)準(zhǔn)XO或VCXO與OCXO之間的穩(wěn)定性差距,有時相當(dāng)于低等級OCXO設(shè)計(jì)的性能。今天的TCXO設(shè)計(jì)比OCXO具有更低的功耗和更小的封裝尺寸。本技術(shù)摘要將幫助用戶理解TCXO的基本功能和屬性,并討論常見的應(yīng)用程序和市場。
TCXO廣泛用于電信應(yīng)用,GPS定位,導(dǎo)航和定時系統(tǒng),具有標(biāo)準(zhǔn)XO或VCXO無法達(dá)到的更嚴(yán)格的溫度穩(wěn)定性。它們是VCXO和OCXO之間的橋梁,它可能比典型的振蕩器更昂貴,消耗更多的功率。技術(shù)的推動是朝著更低功耗和更低成本的方向發(fā)展,因此tcxo為功率和成本敏感的應(yīng)用提供了良好的中端解決方案。應(yīng)用程序暴露在動態(tài)變化的環(huán)境中,同時需要保持對網(wǎng)絡(luò)參考的連續(xù)鎖定,或者可能在無線或高速數(shù)字路由器中傳輸,必須保持頻率單調(diào)行為,這可能需要TCXO的補(bǔ)償。
隨著個人便攜式設(shè)備的發(fā)展,由于穩(wěn)定性、尺寸要求和電池操作,對tcxo的需求大大增加。TCXO是理想的解決方案。蜂窩電話就是一個很好的例子,這種設(shè)備在其生命周期內(nèi)暴露在溫度變化中,同時保持鎖定在給定的網(wǎng)絡(luò)上,并且永遠(yuǎn)不會影響其數(shù)據(jù)交換性能。給定智能手機(jī)設(shè)備中的無線電在保持運(yùn)行時受到天氣變化,沖擊和振動,外部干擾的影響.
隨著用戶對更多數(shù)據(jù)的需求,下一代Wi-Fi和5G移動網(wǎng)絡(luò)將需要處理比目前更大的數(shù)據(jù)量,并且速度更快。為了滿足這種需求,以及在沒有誤差的信號水平下穿透建筑物的需要,小型基站將被用于擴(kuò)大通信數(shù)據(jù)的分布,從而減少個別電臺的潛在負(fù)荷。小型基站是一種微型基站,它具有蜂窩塔的所有性能特征,具有簡單和低功耗,但也可以與蜂窩塔系統(tǒng)的穩(wěn)定性和準(zhǔn)確性相媲美。小蜂窩包括皮蜂窩、微蜂窩和飛蜂窩,可包括室內(nèi)/室外系統(tǒng)。用于此目的的振蕩器將需要更高的耐溫性,更低的相位噪聲和更低的功耗。在這種情況下,對具有這種突出特點(diǎn)的TCXO的需求預(yù)計(jì)會增加。
溫度穩(wěn)定性是衡量振蕩器頻率在特定溫度范圍內(nèi)變化的程度。溫度補(bǔ)償振蕩器使用補(bǔ)償網(wǎng)絡(luò)來調(diào)節(jié)溫度變化。應(yīng)該注意的是,TCXO溫補(bǔ)晶振的頻率與溫度特性不是線性的。
溫度穩(wěn)定性通常被描述為“±ppm”[百萬分之一]。例如,在-40°C至+85°C的工作溫度范圍內(nèi),常見的穩(wěn)定性為±0.28 ppm,并將參考+25°C時的頻率值。+25°C時的頻率讀數(shù)參考最終用戶所需的標(biāo)稱頻率,在溫度范圍-40°C至+85°C內(nèi),設(shè)備頻率將偏離標(biāo)稱頻率不超過0.28ppm。頻率-溫度遲滯限制了TCXO的最終穩(wěn)定性。晶體諧振器是這種遲滯的主要來源,它可以最小化,但不能消除。
用于5G網(wǎng)絡(luò)的CTS晶振精密定時設(shè)備利用低噪聲頻率合成技術(shù)來清除系統(tǒng)頻率噪聲,并將低頻乘以高頻,使我們的技術(shù)適用于高傳輸速率。我們的嵌入式ASIC解決方案和高Q晶體技術(shù)提供優(yōu)化的信噪比,從而產(chǎn)生用于數(shù)據(jù),語音和視頻傳輸?shù)木_和干凈的信號。
針對不斷發(fā)展的5G新無線電[NR]標(biāo)準(zhǔn)和用于支持5G架構(gòu)的小型蜂窩和遠(yuǎn)程無線電頭應(yīng)用的芯片組解決方案的高穩(wěn)定性性能屬性。535和536的設(shè)計(jì)目的是在高傳輸頻率下實(shí)現(xiàn)低噪聲性能,同時保持節(jié)能,并提供低噪聲頻率參考信號,緊湊的穩(wěn)定性選項(xiàng)低至±0.1ppm,工作溫度范圍為-40°C至+105°C,支持室外部署,并可選擇剪切正弦或HCMOS輸出。可選電壓控制頻率調(diào)諧和輸出使能功能也可用。
針對不斷發(fā)展的5G新無線電[NR]標(biāo)準(zhǔn)和用于支持5G架構(gòu)的小型蜂窩和遠(yuǎn)程無線電頭應(yīng)用的芯片組解決方案的高穩(wěn)定性性能屬性。535和536的設(shè)計(jì)目的是在高傳輸頻率下實(shí)現(xiàn)低噪聲性能,同時保持節(jié)能,并提供低噪聲頻率參考信號,緊湊的穩(wěn)定性選項(xiàng)低至±0.1ppm,工作溫度范圍為-40°C至+105°C,支持室外部署,并可選擇剪切正弦或HCMOS輸出。可選電壓控制頻率調(diào)諧和輸出使能功能也可用。
CTS原廠編碼 | 生產(chǎn)商 | 型號 | 類型 | 頻率 | 電壓 | 頻率穩(wěn)定度 |
1380100-004 | CTS晶振 | - | OCXO | 20 MHz | 3.3V | 10ppb |
334L1000B3C2T | CTS晶振 | 334P/L | VCXO | 100 MHz | 2.5V | ±50ppm |
334L1000B3C3T | CTS晶振 | 334P/L | VCXO | 100 MHz | 3.3V | ±50ppm |
334L1000B3I2T | CTS晶振 | 334P/L | VCXO | 100 MHz | 2.5V | ±50ppm |
334L1000B3I3T | CTS晶振 | 334P/L | VCXO | 100 MHz | 3.3V | ±50ppm |
334L1000B4C2T | CTS晶振 | 334P/L | VCXO | 100 MHz | 2.5V | ±30ppm |
334L1000B4C3T | CTS晶振 | 334P/L | VCXO | 100 MHz | 3.3V | ±30ppm |
334L1000B4I2T | CTS晶振 | 334P/L | VCXO | 100 MHz | 2.5V | ±30ppm |
334L1000B4I3T | CTS晶振 | 334P/L | VCXO | 100 MHz | 3.3V | ±30ppm |
334L1000B5C2T | CTS晶振 | 334P/L | VCXO | 100 MHz | 2.5V | ±25ppm |
334L1000B5C3T | CTS晶振 | 334P/L | VCXO | 100 MHz | 3.3V | ±25ppm |
334L1062B3C2T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 2.5V | ±50ppm |
334L1062B3C3T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 3.3V | ±50ppm |
334L1062B3I2T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 2.5V | ±50ppm |
334L1062B3I3T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 3.3V | ±50ppm |
334L1062B4C2T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 2.5V | ±30ppm |
334L1062B4C3T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 3.3V | ±30ppm |
334L1062B4I2T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 2.5V | ±30ppm |
334L1062B4I3T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 3.3V | ±30ppm |
334L1062B5C2T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 2.5V | ±25ppm |
334L1062B5C3T | CTS晶振 | 334P/L | VCXO | 106.25 MHz | 3.3V | ±25ppm |
334L1228B3C2T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 2.5V | ±50ppm |
334L1228B3C3T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 3.3V | ±50ppm |
334L1228B3I2T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 2.5V | ±50ppm |
334L1228B3I3T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 3.3V | ±50ppm |
334L1228B4C2T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 2.5V | ±30ppm |
334L1228B4C3T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 3.3V | ±30ppm |
334L1228B4I2T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 2.5V | ±30ppm |
334L1228B4I3T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 3.3V | ±30ppm |
334L1228B5C2T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 2.5V | ±25ppm |
334L1228B5C3T | CTS晶振 | 334P/L | VCXO | 122.88 MHz | 3.3V | ±25ppm |
334L1250B3C2T | CTS晶振 | 334P/L | VCXO | 125 MHz | 2.5V | ±50ppm |
334L1250B3C3T | CTS晶振 | 334P/L | VCXO | 125 MHz | 3.3V | ±50ppm |
334L1250B3I2T | CTS晶振 | 334P/L | VCXO | 125 MHz | 2.5V | ±50ppm |
334L1250B3I3T | CTS晶振 | 334P/L | VCXO | 125 MHz | 3.3V | ±50ppm |
334L1250B4C2T | CTS晶振 | 334P/L | VCXO | 125 MHz | 2.5V | ±30ppm |
334L1250B4C3T | CTS晶振 | 334P/L | VCXO | 125 MHz | 3.3V | ±30ppm |
334L1250B4I2T | CTS晶振 | 334P/L | VCXO | 125 MHz | 2.5V | ±30ppm |
334L1250B4I3T | CTS晶振 | 334P/L | VCXO | 125 MHz | 3.3V | ±30ppm |
334L1250B5C2T | CTS晶振 | 334P/L | VCXO | 125 MHz | 2.5V | ±25ppm |
334L1250B5C3T | CTS晶振 | 334P/L | VCXO | 125 MHz | 3.3V | ±25ppm |
334L1320B3C2T | CTS晶振 | 334P/L | VCXO | 132 MHz | 2.5V | ±50ppm |
334L1320B3C3T | CTS晶振 | 334P/L | VCXO | 132 MHz | 3.3V | ±50ppm |
334L1320B3I2T | CTS晶振 | 334P/L | VCXO | 132 MHz | 2.5V | ±50ppm |
334L1320B3I3T | CTS晶振 | 334P/L | VCXO | 132 MHz | 3.3V | ±50ppm |
334L1320B4C2T | CTS晶振 | 334P/L | VCXO | 132 MHz | 2.5V | ±30ppm |
334L1320B4C3T | CTS晶振 | 334P/L | VCXO | 132 MHz | 3.3V | ±30ppm |
334L1320B4I2T | CTS晶振 | 334P/L | VCXO | 132 MHz | 2.5V | ±30ppm |
334L1320B4I3T | CTS晶振 | 334P/L | VCXO | 132 MHz | 3.3V | ±30ppm |
334L1320B5C2T | CTS晶振 | 334P/L | VCXO | 132 MHz | 2.5V | ±25ppm |
334L1320B5C3T | CTS晶振 | 334P/L | VCXO | 132 MHz | 3.3V | ±25ppm |
334L1485B3C2T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 2.5V | ±50ppm |
334L1485B3C3T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 3.3V | ±50ppm |
334L1485B3I2T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 2.5V | ±50ppm |
334L1485B3I3T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 3.3V | ±50ppm |
334L1485B4C2T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 2.5V | ±30ppm |
334L1485B4C3T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 3.3V | ±30ppm |
334L1485B4I2T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 2.5V | ±30ppm |
334L1485B4I3T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 3.3V | ±30ppm |
334L1485B5C2T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 2.5V | ±25ppm |
334L1485B5C3T | CTS晶振 | 334P/L | VCXO | 148.5 MHz | 3.3V | ±25ppm |
334L1500B3C2T | CTS晶振 | 334P/L | VCXO | 150 MHz | 2.5V | ±50ppm |
334L1500B3C3T | CTS晶振 | 334P/L | VCXO | 150 MHz | 3.3V | ±50ppm |
334L1500B3I2T | CTS晶振 | 334P/L | VCXO | 150 MHz | 2.5V | ±50ppm |
334L1500B3I3T | CTS晶振 | 334P/L | VCXO | 150 MHz | 3.3V | ±50ppm |
334L1500B4C2T | CTS晶振 | 334P/L | VCXO | 150 MHz | 2.5V | ±30ppm |
334L1500B4C3T | CTS晶振 | 334P/L | VCXO | 150 MHz | 3.3V | ±30ppm |
334L1500B4I2T | CTS晶振 | 334P/L | VCXO | 150 MHz | 2.5V | ±30ppm |
334L1500B4I3T | CTS晶振 | 334P/L | VCXO | 150 MHz | 3.3V | ±30ppm |
334L1500B5C2T | CTS晶振 | 334P/L | VCXO | 150 MHz | 2.5V | ±25ppm |
334L1500B5C3T | CTS晶振 | 334P/L | VCXO | 150 MHz | 3.3V | ±25ppm |
334L1536B3C2T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 2.5V | ±50ppm |
334L1536B3C3T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 3.3V | ±50ppm |
334L1536B3I2T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 2.5V | ±50ppm |
334L1536B3I3T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 3.3V | ±50ppm |
334L1536B4C2T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 2.5V | ±30ppm |
334L1536B4C3T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 3.3V | ±30ppm |
334L1536B4I2T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 2.5V | ±30ppm |
334L1536B4I3T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 3.3V | ±30ppm |
334L1536B5C2T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 2.5V | ±25ppm |
334L1536B5C3T | CTS晶振 | 334P/L | VCXO | 153.6 MHz | 3.3V | ±25ppm |
334L1555B3C2T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 2.5V | ±50ppm |
334L1555B3C3T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 3.3V | ±50ppm |
334L1555B3I2T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 2.5V | ±50ppm |
334L1555B3I3T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 3.3V | ±50ppm |
334L1555B4C2T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 2.5V | ±30ppm |
334L1555B4C3T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 3.3V | ±30ppm |
334L1555B4I2T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 2.5V | ±30ppm |
334L1555B4I3T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 3.3V | ±30ppm |
334L1555B5C2T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 2.5V | ±25ppm |
334L1555B5C3T | CTS晶振 | 334P/L | VCXO | 155.52 MHz | 3.3V | ±25ppm |
334L1562B3C2T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 2.5V | ±50ppm |
334L1562B3C3T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 3.3V | ±50ppm |
334L1562B3I2T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 2.5V | ±50ppm |
334L1562B3I3T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 3.3V | ±50ppm |
334L1562B4C2T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 2.5V | ±30ppm |
334L1562B4C3T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 3.3V | ±30ppm |
334L1562B4I2T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 2.5V | ±30ppm |
334L1562B4I3T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 3.3V | ±30ppm |
334L1562B5C2T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 2.5V | ±25ppm |
334L1562B5C3T | CTS晶振 | 334P/L | VCXO | 156.25 MHz | 3.3V | ±25ppm |
334L2000B3C2T | CTS晶振 | 334P/L | VCXO | 200 MHz | 2.5V | ±50ppm |
334L2000B3C3T | CTS晶振 | 334P/L | VCXO | 200 MHz | 3.3V | ±50ppm |
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