The **VCXO2EV-T24.576T3** is a high-performance Voltage Controlled Crystal Oscillator (VCXO). These components are essential in applications requiring precise frequency tuning or synchronization with external clock signals. ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the technical characteristics of the oscillator: | Segment | Description | Detail | | :--- | :--- | :--- | | **VCXO** | Component Type | Voltage Controlled Crystal Oscillator | | **2EV** | Series/Package | Usually denotes specific package dimensions (e.g., SMD 5x7mm or 3.2x5mm) and CMOS output. | | **24.576** | Nominal Frequency | 24.576 MHz | | **T** | Operating Temp | Often signifies Industrial Grade (-40°C to +85°C). | | **3** | Supply Voltage | Typically indicates 3.3V operation. | --- ### 2. Technical Specifications Below are the typical electronic characteristics for this specific frequency range and series: * **Center Frequency:** 24.576 MHz (Commonly used in audio sampling rates, as it is a multiple of 48 kHz). * **Control Voltage ($V_c$):** Usually 1.65V ± 1.5V (centered at half the supply voltage). * **Pullability:** Typically ±50 ppm to ±100 ppm. This allows the frequency to be adjusted slightly up or down via the control pin. * **Output Type:** LVCMOS / HCMOS. * **Supply Voltage ($V_{dd}$):** 3.3V DC. * **Phase Jitter:** Low jitter performance, essential for high-fidelity audio or data transmission. --- ### 3. Pin Configuration (Typical 6-Pad SMD) Standard VCXOs in this class usually follow this pinout: | Pin # | Function | Description | | :---: | :--- | :--- | | 1 | **V_control** | Voltage input to adjust the output frequency. | | 2 | **OE or NC** | Output Enable (high = active) or No Connection. | | 3 | **GND** | Ground. | | 4 | **Output** | 24.576 MHz Clock signal. | | 5 | **NC** | No Connection. | | 6 | **Vdd** | Power Supply (3.3V). | --- ### 4. Typical Applications * **Audio Interfaces:** Generating master clocks for DACs/ADCs (24.576 MHz = 512 x 48 kHz). * **Phase-Locked Loops (PLLs):** Used as a local oscillator that can be "locked" to a reference clock. * **Networking:** Synchronizing data streams in telecommunications equipment. * **Video Gear:** Clocking for professional video processing units. --- ### 5. Circuit Implementation Example To use this part, you would typically provide a filtered 3.3V supply and a variable voltage to Pin 1: ```cpp // Logic for Frequency Control via MCU // If output frequency is too slow -> Increase V_control // If output frequency is too fast -> Decrease V_control ```