## Technical Overview of PL135-27GC-R The **PL135-27GC-R** is a high-performance Low Power Oscillator IC designed by Microchip Technology (formerly PhaseLink). It is specifically engineered to function as a **Low-Phase Noise Clock Multiplier**, often used to generate high-frequency signals from lower-frequency crystal inputs. --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Function** | Low Power, LVCMOS Output Clock | | **Input Frequency Range** | 10MHz to 27MHz (Crystal or Reference) | | **Output Frequency Range** | 10MHz to 27MHz (1:1 Ratio) | | **Operating Voltage** | 1.62V to 3.63V | | **Output Type** | LVCMOS | | **Package Type** | DFN-6L (2.0mm x 1.3mm) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### 2. Core Functional Components The internal architecture of the PL135-27 series focuses on maintaining signal integrity while minimizing power consumption. * **Crystal Oscillator Circuit:** Designed to work with fundamental mode crystals. It provides the necessary gain to start and maintain oscillation. * **Phase-Locked Loop (PLL) / Buffer:** While some models in this family perform multiplication, the **-27** variant is often utilized as a high-performance buffer/driver that maintains the input frequency with extremely low jitter. * **Output Driver:** The LVCMOS output driver is optimized for "Green" applications, providing a clean square wave while drawing minimal current. --- ### 3. Part Number Breakdown Understanding the suffix codes is essential for procurement and PCB design: * **PL135:** Product family (Low Power, Low Jitter Oscillators). * **27:** Specific configuration/frequency characteristics. * **G:** Package Code (DFN-6L). * **C:** Commercial/Industrial Temperature Grade. * **-R:** Tape and Reel packaging (indicates the delivery format for automated assembly). --- ### 4. Common Applications Due to its small footprint and low voltage requirements, this part is frequently found in: * **Mobile Devices:** Smartwatches, tablets, and handheld sensors. * **IoT Modules:** Where power efficiency is critical for battery life. * **Portable Medical Equipment:** Devices requiring stable clocking in a compact form factor. * **Consumer Electronics:** Digital cameras and high-end audio interfaces. ---