The **MHO+37FCG-R** is a high-precision, high-frequency **Oven Controlled Crystal Oscillator (OCXO)** manufactured by MtronPTI. These components are designed for applications requiring extreme frequency stability over a wide temperature range. --- ### 1. Key Technical Specifications Below is a breakdown of the typical electronic characteristics for the MHO series: | Parameter | Specification (Typical) | | :--- | :--- | | **Output Frequency** | 10.000 MHz to 100.000 MHz (Varies by sub-model) | | **Package Type** | 14-pin DIP (Dual In-line Package) | | **Stability vs. Temp** | ±1.0 ppb to ±50 ppb | | **Supply Voltage** | +3.3V or +5.0V DC | | **Output Type** | CMOS / TTL or Sinewave | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | --- ### 2. Core Functional Components To understand how the MHO+37FCG-R functions, it is helpful to look at its internal architecture: 1. **SC-Cut or AT-Cut Crystal:** The heart of the unit is a high-quality quartz crystal. The "MHO" series often utilizes SC-cut crystals because they offer superior thermal stability and lower sensitivity to mechanical stress. 2. **Internal Oven (Heater):** The "OCXO" designation means the crystal is housed inside a tiny, temperature-controlled oven. This oven maintains the crystal at a specific "turnover temperature," rendering it immune to external ambient temperature fluctuations. 3. **Automatic Gain Control (AGC):** An internal circuit that regulates the power delivered to the crystal to prevent over-driving, which ensures long-term aging stability. 4. **Voltage Regulator:** Internal regulation ensures that noise on the power supply line does not translate into phase noise or frequency jitter. --- ### 3. Part Number Breakdown (Nomenclature) While full datasheets are required for exact matching, the suffix **-R** generally indicates: * **RoHS Compliance:** The part is lead-free and meets environmental standards. * **FCG:** This usually refers to specific frequency stability grades and calibration settings defined by MtronPTI. --- ### 4. Common Applications Due to its high stability, this part is commonly found in: * **Telecommunications:** Base stations (LTE/5G) and small cells. * **Test & Measurement:** Frequency counters and signal generators. * **Network Timing:** Synchronous Ethernet (SyncE) and IEEE 1588 PTP clocks. * **Satellite Communications:** Up/Down converters and ground stations. ---