The **MV25T2AG-R** is a high-performance, automotive-grade Crystal Oscillator (XO) manufactured by **Microchip Technology** (specifically under the Vectron brand heritage). It is designed to provide a stable frequency reference in environments requiring high reliability and resistance to extreme temperatures. ### Technical Specifications Below are the primary electronic characteristics of the MV25T2AG-R: | Feature | Specification | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator (XO) | | **Output Frequency** | 25.000 MHz (Typical) | | **Supply Voltage (Vcc)** | 3.3V (Standard) | | **Output Logic** | CMOS / LVCMOS | | **Frequency Stability** | ±25 ppm to ±50 ppm (Depending on variant) | | **Operating Temperature** | -40°C to +125°C (AEC-Q200 Grade 1) | | **Package Size** | 2.5mm x 2.0mm (4-pad SMD) | --- ### Key Electronic Components & Internal Architecture #### 1. The Quartz Resonator The "heart" of the device is a high-precision quartz crystal blank. In the MV series, this is usually an **AT-cut crystal**, which offers excellent temperature-frequency characteristics. It is hermetically sealed within the ceramic package to prevent aging due to oxidation or moisture. #### 2. The Oscillator IC (ASIC) The internal Integrated Circuit (IC) consists of: * **Gain Stage:** Maintains the oscillation of the crystal. * **Buffer Stage:** Isolates the crystal from the output load to prevent "frequency pulling" and ensures the LVCMOS signal has clean rise/fall times. * **Voltage Regulator:** Internal circuitry that minimizes frequency jitter caused by fluctuations in the input power supply. #### 3. Low Phase Noise Design The electronic architecture is optimized for low jitter. This is critical for automotive communication buses (like CAN, LIN, or Ethernet) where timing errors can lead to data corruption. --- ### Application Use Cases Because of its **AEC-Q200 qualification**, this part is electronically hardened for: * **Advanced Driver Assistance Systems (ADAS):** Providing clocking for cameras and radar. * **Infotainment Systems:** Timing for high-speed processors and displays. * **Body Control Modules (BCM):** Managing central vehicle electronics. --- ### Pin Configuration | Pin | Function | Description | | :--- | :--- | :--- | | 1 | E/D or NC | Enable/Disable (Tri-state) or No Connect | | 2 | GND | Case and Circuit Ground | | 3 | Output | LVCMOS Frequency Output | | 4 | Vcc | Power Supply Voltage | ---