The **VOS2T-R-32L0** is a specific part number belonging to the family of **Oscillators**, specifically an **SMD (Surface Mount Device) Tuning Fork Crystal Oscillator**. These components are critical for timekeeping and frequency control in electronic circuits. ### 1. Key Technical Specifications Based on the standard nomenclature for this series, here are the primary technical characteristics: | Feature | Specification | Description | | :--- | :--- | :--- | | **Nominal Frequency** | 32.768 kHz | The standard frequency for real-time clocks (RTC). | | **Package Size** | 2.0 x 1.2 mm | A subminiature footprint (VOS2 series). | | **Output Type** | CMOS | Provides a square wave signal compatible with most MCUs. | | **Supply Voltage** | 1.8V to 3.3V | Operates within standard low-power logic levels. | | **Frequency Stability** | ±20 ppm to ±50 ppm | Maintains accuracy across temperature variations. | | **Operating Temp** | -40°C to +85°C | Industrial grade temperature range. | --- ### 2. Internal Components and Construction The VOS2T-R-32L0 is an "active" oscillator, meaning it integrates several components into a single ceramic package: 1. **Quartz Crystal Blank:** A tuning-fork shaped piece of quartz that vibrates at a specific frequency when voltage is applied. 2. **Oscillation IC:** An internal integrated circuit that drives the crystal and stabilizes the output signal. 3. **Load Capacitors:** Built-in capacitors that ensure the crystal oscillates at the correct target frequency. 4. **Ceramic Hermetic Housing:** Protects the sensitive quartz from moisture and environmental contaminants. --- ### 3. Applications and Usage This specific part is used in devices that require ultra-low power consumption and a constant time reference. * **Smartphones & Tablets:** For maintaining the system clock when the device is in sleep mode. * **IoT Devices:** Used in "Low Power Wide Area Networks" (LPWAN) to wake the processor at specific intervals. * **Wearables:** Essential for fitness trackers and smartwatches due to the 2.0x1.2mm small form factor. * **Medical Equipment:** Used in portable monitors for timestamping data. --- ### 4. Comparison: Active vs. Passive It is important to note that the **VOS2T** is an **Active Oscillator**, not a passive crystal. | Feature | Passive Crystal (Resonator) | Active Oscillator (VOS2T) | | :--- | :--- | :--- | | **Pins** | 2 Pins usually | 4 Pins (VCC, GND, Output, OE) | | **Circuitry** | Requires external capacitors/inverter | Plug-and-play; no external parts | | **Signal** | Sine wave (Raw) | CMOS Square Wave | | **Space** | Takes up more PCB space | Highly compact integration | ---