The **MHO362FAG-R** is a high-performance, surface-mount (SMD) **Crystal Oscillator** (specifically a VCXO - Voltage Controlled Crystal Oscillator) manufactured by **MtronPTI**. These components are critical in telecommunications and data processing for generating precise timing signals. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Component Type** | Voltage Controlled Crystal Oscillator (VCXO) | | **Output Logic** | HCMOS / TTL | | **Package Type** | 6-Pad Ceramic SMD (J-Lead style often) | | **Voltage Supply** | Typically 3.3V or 5.0V (varies by sub-model) | | **Frequency Range** | Typically ranges from 1.0 MHz to 160.0 MHz | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | Compliant (Lead-free) | --- ### 2. Electronic Architecture The MHO362 series consists of three primary internal stages: 1. **Crystal Resonator:** A precision-cut quartz crystal that provides the fundamental resonant frequency. 2. **Varactor Diode:** Used for frequency tuning. By changing the voltage on the "Control Voltage" pin, the capacitance of the varactor changes, slightly shifting (pulling) the crystal's output frequency. 3. **Output Buffer:** An integrated circuit (IC) that stabilizes the signal and converts it into a standard square wave (HCMOS/TTL) suitable for driving other digital components. --- ### 3. Pin Configuration (Common 6-Pad Layout) | Pin # | Function | Description | | :--- | :--- | :--- | | **1** | Control Voltage ($V_c$) | The input voltage used to adjust the frequency. | | **2** | E/D or N.C. | Enable/Disable (Tri-state) or No Connection. | | **3** | GND | Circuit Ground. | | **4** | Output | The generated clock signal. | | **5** | N.C. | No internal connection. | | **6** | $V_{cc}$ | Positive supply voltage. | --- ### 4. Typical Applications * **Phase-Locked Loops (PLLs):** Used to synchronize two different clock signals. * **Telecommunications:** SONET/SDH and ATM equipment requiring jitter-free timing. * **Data Recovery:** Clock recovery in high-speed fiber optic networks. * **Instrumentation:** Frequency synthesizers and laboratory test equipment. --- ### 5. Part Number Breakdown (MHO362FAG-R) * **MHO:** Series designation (HCMOS/TTL VCXO). * **3:** Voltage code (e.g., 3.3V). * **6:** Stability/Pullability code. * **2:** Temperature range code. * **FAG:** Specific frequency and performance characteristics. * **-R:** RoHS compliant version.