Q-Tech公司美国领先的太空石英晶体振荡器供应商宣布推出QT2021系列微型计算机补偿晶体振荡器（MCXOs）。这些新器件提供出色的OCXO级温度稳定性（在-40°C至+85°C温度范围内高达20ppb），同时最大功耗为90mW，比同类OCXO低30个数量级。QT2021系列的主要特点是耐50k rad（Si）TID辐射和75MeV-cm的单粒子闩锁效应2/mg（分钟）和高冲击和振动耐受性，G灵敏度为1 ppb/G . Qt 2021小型封装仅重50g，相比之下，恒温晶体振荡器（OCXO）装置重100g或更重。这种在尺寸、重量和功率（SWaP）方面的显著改进为各种先进且要求苛刻的空间应用提供了非常优选的选择。

Q-Tech的QT2021微型计算机补偿晶体振荡器（MCXO）使用具有微处理器控制补偿的高稳定性泛音SC切割晶体。自温度感应谐振器使用双模振荡器，几乎消除了与温度测量相关的误差，从而实现了OCXO级的稳定性。

Q-Tech的市场和销售总监斯科特·森茨（Scott Sentz）表示:“在21世纪初首次开发MCXO时，空间级和rad硬数字组件非常昂贵，这意味着MCXO空间级产品会非常昂贵。”“应用我们的工程专业知识，通过利用先进的微控制器和其他耐辐射的数字设备，Q-Tech突破了MCXOs空间限制的障碍。”

该系列提供10MHz、20MHz、30MHz、40MHz、50MHz、60MHz和80MHz石英晶振的标准频率，具有低相位噪声和抖动的CMOS或正弦波逻辑输出。

Q-Tech的QT2021系列MCXO晶体振荡器，具有OCXO级稳定性和高辐射耐受性

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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