The **MHO362FAD-R** is a high-performance **Oven-Controlled Crystal Oscillator (OCXO)** manufactured by MtronPTI. These components are critical in electronic systems that require extreme frequency stability and low phase noise. --- ## 1. Core Technical Specifications The following table highlights the primary electrical characteristics of the MHO362FAD-R series: | Parameter | Specification (Typical) | | :--- | :--- | | **Component Type** | OCXO (Oven-Controlled Crystal Oscillator) | | **Package Type** | DIP (Dual In-line Package) - 4 Pin / 14 Pin compatible | | **Output Type** | CMOS / HCMOS | | **Frequency Range** | Typically 10.000 MHz (Commonly used value) | | **Supply Voltage (Vcc)** | +5.0 VDC (±5%) | | **Stability (Temp)** | ±0.1 ppm to ±0.01 ppm | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | --- ## 2. Key Internal Components An OCXO like the MHO362FAD-R consists of several specialized electronic sub-systems: ### A. The Quartz Crystal The heart of the device. It is typically an **SC-cut (Stress-Compensated)** crystal, which offers superior aging characteristics and thermal stability compared to standard AT-cut crystals. ### B. The Heating Element (Oven) Inside the metal casing, the crystal is placed inside a thermally insulated "oven." A resistive heating element maintains a constant internal temperature (the "turnover point"), usually around 75°C to 85°C. This prevents the frequency from drifting as the external environment changes. ### C. Temperature Control Circuitry A feedback loop consisting of: * **Thermistor:** Senses the internal temperature. * **Error Amplifier:** Compares the thermistor reading to a reference voltage. * **Power Transistor:** Adjusts the current to the heater to maintain the setpoint. ### D. Buffer/Output Stage The electronic circuit that converts the crystal's mechanical vibration into a clean **HCMOS square wave** signal suitable for driving other digital ICs. --- ## 3. Applications Due to its high stability, the MHO362FAD-R is used in specialized sectors: 1. **Telecommunications:** Base stations (LTE/5G), small cells, and synchronization clocks. 2. **Test and Measurement:** Frequency counters and signal generators. 3. **Aerospace/Defense:** Radar systems and satellite communication ground stations. 4. **Networking:** SONET/SDH and Synchronous Ethernet. --- ## 4. Pin Configuration (Typical) While you should always consult the specific datasheet for your suffix version, the standard DIP layout is: ```markdown Pin 1: Vc (Voltage Control / Tuning) - Optional Pin 7: Ground (Case Ground) Pin 8: Output (HCMOS Signal) Pin 14: Vcc (+5.0V Power Supply) ```