The **MV28V2AD-R** is a high-precision, low-profile Oven Controlled Crystal Oscillator (OCCO/OCXO) manufactured by **CTS Electronic Components**. It is specifically designed for applications requiring extreme frequency stability over temperature variations. --- ### ## Technical Specifications The following table summarizes the key electrical and physical characteristics of the MV28V2AD-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | Oven Controlled Crystal Oscillator (OCXO) | | **Frequency** | 10.0 MHz (Standard for this series) | | **Supply Voltage (Vcc)** | +12.0 VDC | | **Output Type** | CMOS | | **Frequency Stability** | ±5.0 ppb (parts per billion) | | **Operating Temperature** | -40°C to +85°C | | **Package Style** | Through-hole (Euro-package compatible) | | **Package Size** | 25.4mm x 22.0mm x 12.1mm | --- ### ### Key Electronic Features 1. **Oven Control Technology:** The device contains an internal heating element and a thermal control circuit that maintains the quartz crystal at a constant "turnover" temperature. This minimizes frequency drift caused by external ambient temperature changes. 2. **SC-Cut Crystal:** It typically utilizes an **SC-cut (Stress Compensated)** crystal. This cut offers superior aging characteristics and lower sensitivity to thermal and mechanical shock compared to standard AT-cut crystals. 3. **Frequency Tuning (Voltage Control):** The "V" in the part number often indicates a control voltage pin (V_c), allowing for fine-tuning or "pulling" of the output frequency to compensate for long-term aging or to synchronize with a GPS/GNSS reference clock. 4. **Low Phase Noise:** Engineered for high-speed telecommunications, the electronic circuitry is optimized to provide a very "clean" signal with minimal jitter. --- ### ### Typical Applications The MV28V2AD-R is used in infrastructure-grade hardware where timing precision is critical: * **Base Stations:** 4G/5G LTE small cells and macro stations. * **Test & Measurement:** High-end frequency counters and signal generators. * **Network Synchronization:** Stratum 3 and SyncE (Synchronous Ethernet) applications. * **Satellite Communications:** Ground station equipment. --- ### ### Pinout Configuration (Standard OCXO) While you should always consult the specific CTS datasheet, the standard electronic layout for this package usually follows this logic: ```text Pin 1: Control Voltage (Vc) Pin 2: Reference Voltage (Vref) or No Connect Pin 3: Supply Voltage (Vcc) Pin 4: RF Output (CMOS) Pin 5: Case Ground ```