## Overview of PLL701-13SC-R The **PLL701-13SC-R** is a high-performance, low-jitter **Phase-Locked Loop (PLL)** clock generator produced by PhaseLink (now part of Microchip Technology). It is specifically designed to provide high-frequency clock outputs for applications requiring precision timing, such as networking, telecommunications, and high-speed data transfer. --- ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Type** | Clock/Frequency Synthesizer | | **Input Frequency** | 10 MHz to 27 MHz (Crystal or Reference) | | **Output Frequency** | Up to 100 MHz (Application dependent) | | **Operating Voltage** | 3.3V (± 10%) | | **Package Type** | SOP-8 (Small Outline Package) | | **Operating Temperature** | 0°C to 70°C (Commercial Grade) | | **Output Type** | CMOS / TTL | | **Jitter Performance** | Low Cycle-to-Cycle Jitter | --- ### Key Internal Components 1. **Phase Detector (PD):** Compares the phase of the input reference signal with the feedback signal from the Voltage Controlled Oscillator (VCO). 2. **Charge Pump (CP) & Loop Filter:** Converts the phase difference into a control voltage. The internal filter ensures stability and reduces noise. 3. **Voltage Controlled Oscillator (VCO):** Generates the actual output frequency based on the control voltage received from the loop filter. 4. **Frequency Dividers:** Integrated dividers allow the chip to multiply or scale the input frequency to the desired output level. --- ### Pin Configuration (SOP-8) | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | XIN / REF | Crystal input or reference clock input. | | 2 | VDD | Positive Power Supply (3.3V). | | 3 | GND | Ground connection. | | 4 | CLKOUT | Main clock output signal. | | 5-8 | NC/SEL | Configuration pins for frequency selection or no connection. | --- ### Applications * **Networking:** Used in Gigabit Ethernet and Fibre Channel switches. * **Storage:** SATA and SAS interface timing. * **Set-Top Boxes:** Providing system clocks for digital signal processing. * **General Purpose:** Replacing expensive high-frequency crystals with cheaper low-frequency crystals + PLL. --- ### Usage Note: The "-R" Suffix In electronic part numbering, the **-R** suffix typically denotes **Tape and Reel** packaging. This indicates that the parts are delivered on a continuous strip for use in automated SMT (Surface Mount Technology) assembly machines.