The **PL500-16TC-R** is a high-performance, low-phase-noise Phase Locked Loop (PLL) clock IC designed specifically for high-frequency clock synthesis and distribution. It is manufactured by Microchip Technology (formerly PhaseLink). --- ## 1. Core Technical Specifications The following table outlines the primary electrical and physical characteristics of the device: | Parameter | Specification | | :--- | :--- | | **Function** | Low Phase Noise VCXO / PLL Clock | | **Input Frequency Range** | 17MHz to 36MHz (Crystal or Reference) | | **Output Frequency Range** | 17MHz to 36MHz (1:1 Ratio) | | **Output Logic Type** | CMOS | | **Operating Voltage (Vcc)** | 2.25V to 3.63V | | **Package Type** | SOT-23 (6-pin) | | **Temperature Range** | 0°C to +70°C (Commercial) | | **Packaging Style** | Tape & Reel (indicated by the "-R") | --- ## 2. Key Electronic Features ### Low Phase Noise Performance The PL500-16 series is engineered to provide exceptionally low jitter and phase noise. This makes it ideal for applications requiring high stability, such as: * Networking equipment (Ethernet, Fibre Channel). * Storage area networks. * Wireless communication base stations. ### VCXO Capability The "TC" variant is often associated with Voltage Controlled Crystal Oscillator (VCXO) functionality. This allows the output frequency to be "pulled" or adjusted slightly by varying an input control voltage ($V_{ctrl}$), which is critical for clock recovery and synchronization. ### Integration The IC integrates the following components into a single small-form-factor package: 1. **Phase Detector:** Compares the input frequency with the internal oscillator. 2. **Loop Filter:** Stabilizes the feedback loop. 3. **Output Buffer:** Drives the CMOS signal to the next stage of the circuit. --- ## 3. Part Number Breakdown Understanding the suffix helps in sourcing and hardware design: | Suffix | Meaning | | :--- | :--- | | **PL500-16** | Base part number (Low Noise VCXO family) | | **T** | Temperature/Performance Grade (Standard Commercial) | | **C** | Package Code (SOT-23) | | **-R** | Tape and Reel (Packaging method for automated assembly) | --- ## 4. Typical Application Circuit When designing with the PL500-16TC-R, it is typically used in a circuit layout similar to this: ```text [Crystal] ----> [PL500-16TC-R] ----> [System Clock/FPGA] ^ | [Control Voltage] ``` ---