Q-Tech公司美國(guó)領(lǐng)先的太空石英晶體振蕩器供應(yīng)商宣布推出QT2021系列微型計(jì)算機(jī)補(bǔ)償晶體振蕩器（MCXOs）。這些新器件提供出色的OCXO級(jí)溫度穩(wěn)定性（在-40°C至+85°C溫度范圍內(nèi)高達(dá)20ppb），同時(shí)最大功耗為90mW，比同類OCXO低30個(gè)數(shù)量級(jí)。QT2021系列的主要特點(diǎn)是耐50k rad（Si）TID輻射和75MeV-cm的單粒子閂鎖效應(yīng)2/mg（分鐘）和高沖擊和振動(dòng)耐受性，G靈敏度為1 ppb/G . Qt 2021小型封裝僅重50g，相比之下，恒溫晶體振蕩器（OCXO）裝置重100g或更重。這種在尺寸、重量和功率（SWaP）方面的顯著改進(jìn)為各種先進(jìn)且要求苛刻的空間應(yīng)用提供了非常優(yōu)選的選擇。

Q-Tech的QT2021微型計(jì)算機(jī)補(bǔ)償晶體振蕩器（MCXO）使用具有微處理器控制補(bǔ)償?shù)母叻€(wěn)定性泛音SC切割晶體。自溫度感應(yīng)諧振器使用雙模振蕩器，幾乎消除了與溫度測(cè)量相關(guān)的誤差，從而實(shí)現(xiàn)了OCXO級(jí)的穩(wěn)定性。

Q-Tech的市場(chǎng)和銷售總監(jiān)斯科特·森茨（Scott Sentz）表示:“在21世紀(jì)初首次開(kāi)發(fā)MCXO時(shí)，空間級(jí)和rad硬數(shù)字組件非常昂貴，這意味著MCXO空間級(jí)產(chǎn)品會(huì)非常昂貴。”“應(yīng)用我們的工程專業(yè)知識(shí)，通過(guò)利用先進(jìn)的微控制器和其他耐輻射的數(shù)字設(shè)備，Q-Tech突破了MCXOs空間限制的障礙。”

該系列提供10MHz、20MHz、30MHz、40MHz、50MHz、60MHz和80MHz石英晶振的標(biāo)準(zhǔn)頻率，具有低相位噪聲和抖動(dòng)的CMOS或正弦波邏輯輸出。

Q-Tech的QT2021系列MCXO晶體振蕩器，具有OCXO級(jí)穩(wěn)定性和高輻射耐受性

Q-Tech’s QT2021 Series MCXO Crystal Oscillators Deliver OCXO-Level Stability and High Radiation Tolerance

Model QT2021 Series microcomputer-compensated crystal oscillators (MCXOs) deliver superior size, weight, and power over comparable oven-controlled devices for space applications.

Q-Tech Corporation, a US-based leading supplier of space-qualified crystal oscillators, announces the introduction of the QT2021 Series microcomputer compensated crystal oscillators (MCXOs). These new devices provide exceptional OCXO-level temperature stability (up to ±20ppb over -40°C to +85°C) while consuming a maximum of 90mW—thirty orders of magnitude lower than comparable OCXOs. Key features of the QT2021 Series are radiation tolerance to 50kRad(Si) TID, single event latch-up (SEL) of 75MeV-cm2/mg (min) and high shock and vibration tolerance with G-sensitivity of 1ppb/g. The QT2021 small form-factor package weighs just 50g, vs. comparable oven-controlled (OCXO) units weighing 100g or more. This significant improvement in size, weight, and power (SWaP) offers a highly preferable option for a wide array of advanced, and demanding space applications.

Q-Tech’s QT2021 microcomputer compensated crystal oscillator (MCXO) uses a high-stability overtone SC-cut crystal with microprocessor-controlled compensation. The self-temperature sensing resonator, using a dual-mode oscillator, virtually eliminates thermometry-related errors, resulting in OCXO-level stability.

“When MCXOs were first developed in the early 2000s, space- and rad hard-level digital components were very costly, which meant an MCXO space-level product would be prohibitively expensive,” said Scott Sentz, Q-Tech’s Director of Marketing and Sales. “Applying our engineering expertise and by utilizing advanced microcontrollers and other digital devices that are rad tolerant, Q-Tech has broken the barrier of space limitations for MCXOs.”

The series is offered with standard frequencies of 10MHz, 20MHz, 30MHz, 40MHz, 50MHz, 60MHz and 80MHz, with either CMOS or Sine Wave logic outputs with low phase noise and jitter.

Data Sheet	Package	Dimensions (mm)	Market	Device Type	Logic Type	Supply Voltage	Stability
QT2010	QT2010	25.4x25.4x13.5	Military & Avionics	MCXO	SINE	3.3Vdc	±5ppb to ±30ppb
QT2020	QT2020	25.40x50.80x8.26	Space	MCXO	CMOS, SINE	3.3Vdc	±5ppb to ±30ppb
QT2021	QT2021	25.40x50.80x8.26	Space	MCXO	CMOS, SINE	3.3Vdc	±5ppb to ±30ppb
QT2010	QT2010	25.4x25.4x13.5	Military & Avionics	MCXO	CMOS	3.3Vdc	±5ppb to ±30ppb

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