The **MHO366TAD-R** is a high-performance **Oven-Controlled Crystal Oscillator (OCXO)** manufactured by MtronPTI. These components are critical in electronics where extreme frequency stability and low phase noise are required, far exceeding the capabilities of standard quartz crystals or Temperature Compensated Crystal Oscillators (TCXOs). --- ## 1. Technical Specifications The following table summarizes the core electronic parameters of the MHO366 series: | Parameter | Specification (Typical) | | :--- | :--- | | **Frequency Range** | 10.0 MHz to 100.0 MHz | | **Supply Voltage ($V_{cc}$)** | +3.3 VDC or +5.0 VDC | | **Output Waveform** | CMOS or Sinewave | | **Frequency Stability** | $\pm 5.0$ ppb to $\pm 50$ ppb (over temp) | | **Operating Temp Range** | -40°C to +85°C (Industrial Grade) | | **Power Consumption** | ~1.0W (Steady State) / ~3.0W (Warm-up) | | **Package Size** | 20.3 x 12.7 x 11.0 mm (DIP-14 Compatible) | --- ## 2. Key Electronic Features ### A. Oven Control Mechanism The "Oven" in OCXO refers to an internal heating element and a thermistor-controlled circuit. It maintains the quartz crystal at a specific "turning point" temperature (usually around 75°C to 85°C). - **Benefit:** Because the crystal stays at a constant temperature, its frequency remains stable regardless of external ambient temperature fluctuations. ### B. Low Phase Noise The MHO366 series is engineered for applications requiring high spectral purity. Low phase noise ensures that the timing signal does not jitter, which is vital for high-speed data transmission. ### C. Aging Characteristics Over time, all crystals drift due to physical changes. The MHO366TAD-R features low aging rates, typically measured in parts per billion (ppb) per day or per year, reducing the need for frequent recalibration. --- ## 3. Pin Configuration (DIP-14 Package) Though specific layouts can vary by sub-model, the standard MHO series usually follows this configuration: | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | Voltage Control ($V_c$) | Allows for manual frequency tuning via voltage. | | **Pin 7** | Case Ground | Electrical and RF shielding ground. | | **Pin 8** | Output | The generated clock signal (CMOS/Sine). | | **Pin 14** | Supply Voltage ($V_{cc}$) | Power input for the heater and oscillator. | --- ## 4. Common Applications Due to its precision, this part is used in: * **Telecommunications:** Base stations (4G/5G), LTE, and small cells. * **Test & Measurement:** Frequency counters and signal generators. * **Network Timing:** Synchronous Ethernet (SyncE) and IEEE 1588 PTP. * **Radar Systems:** Where timing precision impacts distance calculation.