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應(yīng)用于：物聯(lián)網(wǎng)，存儲(chǔ)設(shè)備，商業(yè)現(xiàn)貨(COTS)，導(dǎo)航，醫(yī)療（非生命維持），移動(dòng)設(shè)備，工業(yè)應(yīng)用，無(wú)線設(shè)備，測(cè)驗(yàn)設(shè)備，通用微處理器，網(wǎng)絡(luò)攝像機(jī)

TCXO晶振ECS-TXO-3225MV-250-TR是無(wú)線連接和智能電網(wǎng)應(yīng)用的理想選擇

微型的HCMOS輸出溫補(bǔ)晶振很適合無(wú)線物聯(lián)網(wǎng)應(yīng)用ECS-TXO-2520-33-120-AN-TR，Startup time is the period when an oscillator is first turned on. During this period there will be instabilities until the oscillations stabilize. Start-up time is usually measured in microseconds (µS), but it is frequency dependent and controlled by the feedback loop. The magnitude of the closed loop gain has great influence on the startup time. Factors that negatively affect closed loop gain include the low drive level, higher values of crystal capacitive load (CL), and equivalent series resistance (ESR). Low gain can cause excessively long start-up time, and too high of gain can cause start-up to fail altogether or over drive the crystal structure. The ideal gain is dependent on the negative resistance of the oscillator circuit, where the drive must overcome the negative resistance to start-up and build the oscillator output.  Because of this the oscillator frequency directly influences the start-up time, so the time it takes to circulate the loop is considerably longer for a KHz oscillator than a MHz oscillator. Poor gain margin is a common problem in kHz oscillators, since drive levels are an order of magnitude lower and crystal ESR’s an order of magnitude higher. To overcome these issues careful design is required to match drive levels to suitable CL and ESR values.

The impedance of quartz crystal changes so dramatically with changes in the applied frequency, that all other circuit components can be considered as being of essentially continuous reactance. Consequently, when a crystal unit is used in the feedback loop of an oscillator, the frequency of the crystal unit will regulate itself so that it presents a reactance which satisfies the loop phase gain. A representation of the reactance vs. frequency of a quartz crystal unit is displayed in Figure 3.

啟動(dòng)時(shí)間是石英晶體振蕩器第一次開啟的時(shí)間。在此期間，將出現(xiàn)不穩(wěn)定，直到振蕩穩(wěn)定。啟動(dòng)時(shí)間通常以微秒 (µS) 為單位，但它取決于頻率并由反饋回路控制。閉環(huán)增益的大小對(duì)啟動(dòng)時(shí)間影響很大。對(duì)閉環(huán)增益產(chǎn)生負(fù)面影響的因素包括低驅(qū)動(dòng)電平、較高的晶體電容負(fù)載 (CL) 和等效串聯(lián)電阻 (ESR)。低增益會(huì)導(dǎo)致啟動(dòng)時(shí)間過長(zhǎng)，增益過高會(huì)導(dǎo)致啟動(dòng)完全失敗或過度驅(qū)動(dòng)晶體結(jié)構(gòu)。理想增益取決于振蕩器電路的負(fù)電阻，其中驅(qū)動(dòng)器必須克服負(fù)電阻才能啟動(dòng)并建立振蕩器輸出。因此，振蕩器頻率直接影響啟動(dòng)時(shí)間，因此KHz振蕩器的循環(huán)循環(huán)時(shí)間比MHz振蕩器長(zhǎng)得多。增益裕度差是kHz振蕩器的常見問題，因?yàn)轵?qū)動(dòng)電平低一個(gè)數(shù)量級(jí)，而晶體ESR高一個(gè)數(shù)量級(jí)。為了克服這些問題，需要仔細(xì)設(shè)計(jì)以使驅(qū)動(dòng)電平與合適的CL和 ESR值相匹配。

Abracon's oscillator broad product offerings include standard XO, VCXO, TCXO, OCXO, VCTXO, VCOCXO and MEMS types with SMD or through-hole mounting. The collection includes options optimized for small size, long battery life, ultra-low noise performance, and industrial temperature stability & durability, and precision timing.

Abracon的有源晶體振蕩器產(chǎn)品種類繁多，包括標(biāo)準(zhǔn) XO、VCXO、TCXO、OCXO、VCTXO、VCOCXO 和具有 SMD 或通孔安裝的 MEMS 類型。該系列包括針對(duì)小尺寸、長(zhǎng)電池壽命、超低噪聲性能、工業(yè)溫度穩(wěn)定性和耐用性以及精確計(jì)時(shí)而優(yōu)化的選項(xiàng)。Abracon晶振開發(fā)AX5系列的有源振蕩器AX5PAF1-26.00000,支持差分輸出

低抖動(dòng)和寬頻率范圍FASTXO系列，XO和VCXO石英晶體振蕩器型，尺寸：7.0x5.0毫米/5.0x3.2毫米，單路、雙路和四路輸出，具有寬頻率范圍的任意頻率：15MHz至2.1GHz，具有出色RMS抖動(dòng)的高性能典型值：130 fs，高達(dá)275ppm 的寬頻率牽引范圍，CMOS、LVPECL、LVDS、CML、HCSL輸出可用，供電，電壓：3.3V、2.5V和1.8V。

應(yīng)用：SONET/SDH，聯(lián)網(wǎng)，xDSL，10/100 GbE LAN / WAN，標(biāo)清/高清視頻，時(shí)鐘和數(shù)據(jù)恢復(fù)，低抖動(dòng)時(shí)鐘生成，測(cè)試與測(cè)量

ECScrystal晶振被世界一流的研究公司和電子設(shè)備設(shè)計(jì)師認(rèn)可為創(chuàng)新頻率控制、同步、連接和磁力解決方案的全球十大開發(fā)商和制造商.

ECS Inc. 模擬補(bǔ)償 MultiVolt TM削波正弦波 TCXO在具有 MultiVolt TM電源功能 的小型封裝尺寸中，在-30°C ~ +85°C時(shí)具有超緊的±0.5ppm  。ECS-TXO-CSMV-AC 使用高刷新率或頻率校準(zhǔn)率，以在溫度補(bǔ)償期間保持線性頻率輸出。