The **M3V22T2J-R** is a specific part number belonging to the **M3V series** of Voltage Controlled Crystal Oscillators (VCXO), typically manufactured by companies like MtronPTI. These components are critical for frequency control and timing in telecommunications and data processing systems. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Component Type** | VCXO | Voltage Controlled Crystal Oscillator | | **Voltage Supply** | 3.3V | Operates on a standard 3.3V DC rail | | **Output Type** | CMOS / HCMOS | Standard logic level output for digital circuits | | **Frequency Stability** | ±25 ppm to ±50 ppm | Varies by sub-suffix, usually indicating high precision | | **Package Size** | 5.0 x 7.0 mm | Standard 6-pad SMD (Surface Mount Device) ceramic package | | **Operating Temp** | -40°C to +85°C | Industrial temperature grade | --- ### 2. Functional Components A VCXO like the M3V22T2J-R consists of several internal sub-sections: * **Quartz Crystal Resonator:** The heart of the part, providing the base stable frequency. * **Varactor Diode:** A voltage-variable capacitor that allows the user to "pull" or adjust the oscillation frequency by applying an external control voltage. * **Oscillator IC:** An integrated circuit that sustains the oscillation and provides the CMOS output buffer. * **Voltage Control Pin (Vc):** Usually Pin 1, used to fine-tune the output frequency to synchronize with a reference clock. --- ### 3. Pin Configuration (Standard 6-Pad SMD) Typical layout for this series: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | **Voltage Control (Vc)** | Input to adjust the frequency | | **2** | **Tristate / OE** | Output Enable (high = active, low = high impedance) | | **3** | **Ground** | Circuit common | | **4** | **Output** | CMOS clock signal output | | **5** | **N/C** | No connection (often used for differential signals in other models) | | **6** | **Vdd** | Power supply (+3.3V) | --- ### 4. Common Applications * **Phase-Locked Loops (PLL):** Used to synchronize local clocks with incoming data streams. * **Telecommunications:** Base stations, SONET/SDH, and Ethernet synchronization. * **Digital Video:** Jitter reduction in high-definition video processing. * **Frequency Synthesis:** Generating variable frequencies from a stable reference.