The **MHO+61FBD-R** is a high-precision, high-frequency **TCXO (Temperature Compensated Crystal Oscillator)** manufactured by **MtronPTI**. This component is specifically designed for telecommunications and networking hardware where timing stability is critical. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics of the MHO+61FBD-R: | Feature | Specification | | :--- | :--- | | **Component Type** | Temperature Compensated Crystal Oscillator (TCXO) | | **Frequency Range** | Typically 1.0 MHz to 160.0 MHz (Model specific) | | **Output Type** | CMOS / HCMOS | | **Supply Voltage ($V_{dd}$)** | +3.3 VDC (Standard for the '6' series) | | **Stability** | ±1.0 ppm to ±2.5 ppm (Over temperature range) | | **Package Style** | 5x7 mm Surface Mount (SMD), 4 or 6 pads | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | --- ### 2. Decoding the Part Number The alphanumeric code provides specific details about the component's construction: * **MHO**: Represents the MtronPTI series for high-frequency TCXOs. * **+**: Indicates RoHS compliance (Lead-free). * **6**: Denotes the 3.3V supply voltage requirement. * **1**: Denotes the frequency stability (usually ±1.0 ppm). * **F**: Represents the operating temperature range (typically -40°C to +85°C). * **BD**: Designates the specific output waveform and symmetry (CMOS). * **R**: Indicates the packaging method (Tape & Reel). --- ### 3. Functional Internal Blocks To achieve its high stability, the device contains several internal electronic stages: 1. **Crystal Resonator:** The quartz heart of the device that determines the base frequency. 2. **Compensation Network:** A thermistor-based circuit that senses ambient temperature and adjusts the load capacitance of the crystal to counteract frequency drift. 3. **Voltage Regulator:** Ensures that small fluctuations in the input power do not affect the output frequency. 4. **Buffer/Output Driver:** Converts the internal oscillation into a clean square wave (CMOS) capable of driving other digital ICs. --- ### 4. Common Applications Due to its low jitter and high stability, this part is commonly found in: * **Wireless Infrastructure:** Base stations and small cells. * **Networking:** High-speed Ethernet switches and routers. * **GPS/GNSS:** Timing modules for satellite positioning. * **Test Equipment:** Portable signal analyzers.