The part number **MHO+67FAG-R** typically refers to a high-precision **OCXO (Oven Controlled Crystal Oscillator)** manufactured by MTI-Milliren Technologies, Inc. These components are designed for high stability in frequency control applications. --- ## 1. Technical Specifications The MHO series is known for its ability to maintain a consistent frequency by housing the quartz crystal inside a temperature-controlled oven. | Feature | Specification Details | | :--- | :--- | | **Component Type** | Oven Controlled Crystal Oscillator (OCXO) | | **Package Style** | Through-hole Metal Can (typically 1.0" x 1.0" or 0.8" x 0.8") | | **Frequency Stability** | Extremely high (often in the ppb - parts per billion range) | | **Supply Voltage** | Usually +5V or +12V DC | | **Output Type** | CMOS, HCMOS, or Sine Wave | | **RoHS Status** | The "-R" suffix typically denotes **RoHS Compliant** | --- ## 2. Key Electronic Features ### Oven Control Mechanism Unlike standard oscillators, this part uses an internal heating element and a thermistor-controlled feedback loop. This keeps the quartz crystal at a specific "turning point" temperature (usually around 75°C to 85°C), making it immune to external ambient temperature fluctuations. ### Aging and Precision * **Daily Aging:** Very low frequency drift per day (e.g., $\pm 1 \times 10^{-9}$). * **Warm-up Time:** Requires a short period (minutes) to reach thermal equilibrium before reaching peak stability. * **Phase Noise:** Designed with low phase noise to minimize jitter in high-speed communication systems. --- ## 3. Common Applications Due to its high stability, the MHO+67FAG-R is used in infrastructure-grade equipment: 1. **Telecommunications:** Base stations (LTE/5G), small cells, and synchronization modules. 2. **Test & Measurement:** Frequency counters, signal generators, and spectrum analyzers. 3. **Broadcasting:** Digital TV transmitters and studio timing references. 4. **Satellite Systems:** Ground station clocking and GPS-disciplined clocks. --- ## 4. Pinout Configuration (Standard OCXO) *Note: Always verify with the specific MTI datasheet.* | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | **V_ctrl** | Voltage Control / Frequency Tuning (optional) | | **2** | **V_ref** | Reference Voltage Output | | **3** | **Vcc** | Supply Voltage Input | | **4** | **Output** | RF Frequency Output | | **5** | **GND** | Ground / Case |