The **MV26V1CD-R** is a specific model of a **Miniature Vertical (MV) Voltage Controlled Crystal Oscillator (VCXO)**. These components are critical in telecommunications and networking hardware for frequency control and synchronization. --- ### 1. Component Overview The MV26V1CD-R belongs to a category of high-precision oscillators where the output frequency can be adjusted (varied) by a DC input voltage. | Parameter | Description | | :--- | :--- | | **Component Type** | VCXO (Voltage Controlled Crystal Oscillator) | | **Package Style** | Miniature Vertical / Through-hole (DIP) | | **Function** | Generates a stable clock signal adjustable via voltage | | **Common Application** | Phase-Locked Loops (PLL), Frequency Synthesis | --- ### 2. Key Electronic Characteristics While specific datasheets vary by manufacturer (often associated with brands like *Connor-Winfield* or *C-MAC*), the "MV26" series generally follows these technical specifications: #### A. Frequency Control * **Control Voltage ($V_c$):** Typically ranges from 0.5V to 4.5V. * **Pullability:** The range by which the frequency can be "pulled" from the center frequency, usually measured in parts per million (PPM), often $\pm 50$ to $\pm 100$ PPM. #### B. Electrical Performance * **Supply Voltage ($V_{cc}$):** Usually 5.0V or 3.3V DC. * **Output Waveform:** HCMOS/TTL compatible, providing clean square waves for digital circuits. * **Stability:** High thermal stability compared to standard oscillators, often used in environments with temperature fluctuations. --- ### 3. Pinout Configuration Most parts in this series utilize a standard 4-pin or 6-pin layout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | **Control Voltage** | The input DC voltage used to adjust the frequency. | | **2** | **Case Ground** | Connected to the circuit ground and the metal housing for EMI shielding. | | **3** | **Output** | The stabilized clock signal sent to the CPU/FPGA. | | **4** | **Supply ($V_{cc}$)** | Positive power input. | --- ### 4. Meaning of the Suffixes * **MV:** Miniature Vertical (Physical orientation). * **26:** Series identifier (Specific physical dimensions and base specs). * **V:** Indicates "Voltage Controlled." * **-R:** Generally stands for **RoHS Compliant**, meaning the part is manufactured without lead or other hazardous substances. --- ### 5. Common Use Cases 1. **Telecommunications:** Synchronizing data streams in SONET/SDH equipment. 2. **Video Equipment:** Used in genlocking systems to sync video frames. 3. **Instrumentation:** Precision clocking for frequency counters and signal generators.