The **M3V23V2J-R** is a high-performance **Voltage Controlled Crystal Oscillator (VCXO)** manufactured by NDK (Nihon Dempa Kogyo). These components are critical in telecommunications and networking equipment for frequency stabilization and clock generation. --- ### 1. Key Technical Specifications Below is a breakdown of the typical parameters for this series: | Parameter | Specification | | :--- | :--- | | **Component Type** | VCXO (Voltage Controlled Crystal Oscillator) | | **Output Type** | LV-PECL (Low-Voltage Positive Emitter-Coupled Logic) | | **Supply Voltage (Vcc)** | +3.3V DC | | **Package Size** | 7.0 x 5.0 mm (6-pad SMD) | | **Frequency Range** | Typically 50 MHz to 200 MHz (Model specific) | | **Frequency Stability** | ±50 ppm or ±100 ppm (depending on variant) | | **Control Voltage Range** | 1.65V ± 1.65V | --- ### 2. Functional Description The "M3V" series is designed to adjust its output frequency based on an external control voltage input. * **LV-PECL Output:** This part uses differential signaling (LV-PECL), which is preferred in high-speed applications because it provides excellent noise immunity and very low jitter. * **Voltage Control (VC):** By varying the voltage on Pin 1, the user can "pull" the frequency slightly higher or lower to synchronize with a master clock (Phase-Locked Loop or PLL). * **Low Phase Jitter:** It is engineered for low phase noise, making it suitable for high-speed optical modules (SFP/XFP) and Ethernet switches. --- ### 3. Pin Configuration (Typical 6-Pad) | Pin # | Function | Description | | :--- | :--- | :--- | | **1** | Vcont | Control Voltage Input (Frequency tuning) | | **2** | E/D or NC | Enable/Disable or No Connection | | **3** | GND | Case Ground | | **4** | OUT | Main RF Output | | **5** | #OUT | Complementary RF Output | | **6** | Vcc | Power Supply (+3.3V) | --- ### 4. Common Applications * **Telecommunications:** Base stations, SONET/SDH synchronization. * **Networking:** Gigabit Ethernet, Fibre Channel, and high-end routers. * **Broadcast:** Professional video clocking and digital signal processing.