The **MCSO2L** is a high-performance, space-qualified **Crystal Oscillator** (XO) manufactured by **Microcrystal** (a company of the Swatch Group). It is specifically designed for high-reliability applications, particularly in aerospace and defense. --- ### ## Technical Specifications The MCSO2L is known for its extremely low power consumption and high stability in harsh environments. Below are the primary electronic characteristics: | Parameter | Typical Value / Range | |:---|:---| | **Frequency Range** | 10 kHz to 225 MHz | | **Supply Voltage (Vdd)** | 1.8 V / 2.5 V / 3.3 V / 5.0 V | | **Output Type** | CMOS / HC-MOS | | **Operating Temperature** | -55°C to +125°C (Military Grade) | | **Package Type** | LCC-4 (Leadless Ceramic Chip Carrier) | | **Current Consumption** | Very low (µA to low mA depending on frequency) | --- ### ### Core Components and Functionality The device integrates several critical electronic parts into a single hermetically sealed package: 1. **Quartz Crystal Resonator:** * The "heart" of the component. It uses a high-purity synthetic quartz blank. * The "L" in MCSO2L typically signifies a low-profile or specific design iteration for surface mounting. 2. **Oscillator IC (ASIC):** * An Application-Specific Integrated Circuit that provides the feedback loop and gain necessary to maintain the crystal's vibration. * It includes frequency dividers and output buffers to ensure a clean square wave signal. 3. **Ceramic Package (LCC):** * A 4-pin ceramic housing that provides excellent thermal stability and protection against moisture. * Gold-plated pads ensure reliable soldering for space missions. --- ### ### Key Electronic Features * **Radiation Hardness:** These parts are often tested for Total Ionizing Dose (TID) and Single Event Effects (SEE), making them suitable for satellite payloads. * **Low Aging:** The quartz is processed to ensure the frequency remains stable over many years of operation. * **Shock and Vibration Resistance:** Built to withstand the extreme mechanical stress of a rocket launch. --- ### ### Common Applications * **Satellites:** Clock generation for microprocessors and FPGAs. * **Avionics:** Flight control systems. * **Deep Sea:** Down-hole drilling equipment where high temperatures and pressures exist.