The part number **47LPQ-A0B-R/Q** typically refers to a specialized high-performance quartz crystal oscillator or a high-frequency timing component, often associated with manufacturers like **TXC Corporation** or similar precision timing component suppliers. Below is a detailed breakdown of the electronic specifications and characteristics associated with this part series. --- ## 1. Technical Specifications This component is designed for precision frequency control in high-speed data environments. | Parameter | Specification (Typical) | | :--- | :--- | | **Component Type** | Differential Output Crystal Oscillator (XO) | | **Output Type** | LVPECL (Low-Voltage Positive Emitter-Coupled Logic) | | **Supply Voltage** | 2.5V or 3.3V (Standard) | | **Package Size** | 7.0 x 5.0 mm (6 pads) | | **Frequency Stability** | ±25ppm to ±50ppm | | **Operating Temp Range** | -40°C to +85°C (Industrial Grade) | | **Jitter Performance** | Ultra-low phase jitter (< 1ps RMS) | --- ## 2. Part Number Deciphering While specific manufacturer codes can vary slightly, the string follows a standard logic: ### A. Series (47LPQ) * **47:** Refers to the physical package size (7.0 x 5.0 mm). * **LPQ:** Indicates **L**ow **P**ower / **P**ECL output logic with **Q**uartz stability. ### B. Configuration (A0B) * **A:** Often denotes the operating voltage (e.g., 3.3V). * **0:** Frequency stability code (Standard stability). * **B:** Operating temperature range indicator (Industrial -40/+85°C). ### C. Packaging (R/Q) * **R:** Tape & Reel packaging for automated SMT assembly. * **Q:** Quality grade or specific revision code (Automotive or High-Reliability). --- ## 3. Key Applications Because of the **LVPECL** output, this part is used in circuits where high-speed signal integrity and low noise are critical. 1. **Networking Hardware:** 10G/40G/100G Ethernet switches and routers. 2. **Fiber Optics:** SFP+ and QSFP transceiver modules. 3. **Data Centers:** High-speed servers and storage area networks (SAN). 4. **Telecommunications:** Base stations and backhaul equipment. --- ## 4. Typical Connection Diagram When integrating this part into a PCB, a termination resistor network is required for the differential pairs. ```c // Typical LVPECL Termination (Near Receiver) [ Oscillator ] ----(OUT)----[ 50 Ohm Trace ]----|----[ Receiver ] | [Resistor] | (Vcc - 2V) ```