The **MHO314FCG-R** is a high-performance **Oven Controlled Crystal Oscillator (OCXO)** manufactured by MtronPTI. These components are critical in precision timing applications where frequency stability must remain constant despite fluctuations in environmental temperature. --- ### 1. Key Technical Specifications The following table highlights the primary electrical and physical characteristics of the MHO314FCG-R: | Parameter | Specification (Typical) | | :--- | :--- | | **Component Type** | Oven Controlled Crystal Oscillator (OCXO) | | **Package Type** | Thru-hole (DIP) / Metal Can | | **Output Type** | CMOS / HCMOS | | **Supply Voltage (Vcc)** | +3.3V or +5.0V (Standard) | | **Frequency Stability** | ±0.1 ppm to ±0.01 ppm (Temp dependent) | | **Operating Temp Range** | -40°C to +85°C (Standard Industrial) | | **RoHS Status** | Compliant (indicated by "-R") | --- ### 2. Functional Description The "Oven Controlled" aspect of this part refers to an internal heating circuit that maintains the quartz crystal at a specific, constant temperature (the "turn-over point"). This prevents the frequency from drifting as the external ambient temperature changes. #### Internal Sub-systems: 1. **Crystal Resonator:** The high-Q quartz element that generates the reference frequency. 2. **Heater Circuit:** A thermistor-controlled heating element that surrounds the crystal. 3. **Buffer Amplifier:** Ensures the output signal is strong enough to drive CMOS loads without affecting the oscillator's stability. 4. **Voltage Regulator:** Internal regulation to minimize frequency "pushing" caused by power supply noise. --- ### 3. Pinout Configuration While specific pin assignments should always be verified via the MtronPTI datasheet, a standard 4-pin or 14-pin DIP OCXO usually follows this logic: ```markdown Pin 1: V_control (Voltage Control for frequency tuning) Pin 7: Case Ground Pin 8: Output (HCMOS Signal) Pin 14: Vcc (Supply Voltage) ``` --- ### 4. Common Applications Due to its high stability and low phase noise, the MHO314FCG-R is typically used in: * **Telecommunications:** Base stations (LTE/5G) and small cells. * **Test & Measurement:** Frequency counters and signal generators. * **Data Networking:** Synchronous Ethernet (SyncE) and IEEE 1588 PTP clocks. * **Satellite Comm:** Ground station equipment.