The **MHO377TCG-R** is a high-precision, surface-mount (SMD) **Temperature Compensated Crystal Oscillator (TCXO)**. It is designed for applications requiring high frequency stability over a wide temperature range, typically used in telecommunications and GPS equipment. --- ## 1. Technical Specifications The following table outlines the core electronic characteristics of the MHO377TCG-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | TCXO (Temperature Compensated Crystal Oscillator) | | **Frequency Range** | Typically 10.000 MHz to 52.000 MHz (Specific to variant) | | **Supply Voltage ($V_{dd}$)** | +3.3V DC (Standard) | | **Output Type** | Clipped Sine Wave | | **Frequency Stability** | ±0.5 ppm to ±2.5 ppm (Over temp range) | | **Operating Temperature** | -30°C to +85°C (Industrial Grade) | | **Package Size** | 7.0 x 5.0 mm (SMD 4-pad or 6-pad) | --- ## 2. Key Electronic Features ### A. Temperature Compensation Unlike standard crystals, the MHO377TCG-R contains an internal compensation circuit (usually a thermistor network or a digital compensation IC). This circuit adjusts the load capacitance of the crystal in real-time to counteract frequency "drift" caused by ambient temperature changes. ### B. Clipped Sine Wave Output The "TCG" designation often refers to the output waveform. A **Clipped Sine Wave** is preferred in RF applications because: * It reduces harmonic distortion. * It lowers power consumption compared to CMOS/TTL logic levels. * It minimizes Electromagnetic Interference (EMI). ### C. Low Phase Noise This part is engineered for low phase noise, which is critical for maintaining signal integrity in high-speed data transmission and wireless synchronization. --- ## 3. Pin Configuration (Typical) Most oscillators in this 7050 package follow a standard pinout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | Vcon / NC | Voltage Control (if VCTCXO) or No Connection | | **2** | GND | Ground | | **3** | Output | Frequency Output Signal | | **4** | $V_{dd}$ | Power Supply Input | --- ## 4. Common Applications * **Wireless Communication:** Base stations, point-to-point radio. * **Navigation:** GPS/GNSS receivers requiring fast "Time to First Fix" (TTFF). * **Networking:** SONET/SDH, 10GbE, and Synchronous Ethernet. * **Test Equipment:** Portable frequency counters and signal generators.