Analog & Mixed Signal
Community Leader's Blog
|
Optimal Configuration of your Reconfigurable PLLOptimal Configuration of your Reconfigurable PLL by Erik Mentze, Sr. Systems Engineer, Cypress Semiconductor The goal of any frequency synthesizer is to, based on a given input reference frequency, generate a desired output frequency. However, this relationship between available input frequency and required output frequency is not always obvious. The question always looms: is there another, better configuration for my PLL that would give me better noise performance and lower power? Sometimes the question is critical as to whether the current hardware is even able to meet new requirements (does a solution exist?) This article introduces a method for finding all possible PLL configurations (using integer divide PLLs) that can meet a given set of input / output frequency requirements. A metric is then applied to this complete list of configurations to determine the “best” configuration for your specific application. |
Members
Community Related Content
Power Integrations’ Latest High-Voltage ICs Eliminate Sense Resistor Power Losses in Standby Mode - Lee H Goldberg, 09/01/2010
National Semiconductor’s WEBENCH LED Architect Simplifies and Speeds Lighting Design - Lee H Goldberg, 08/30/2010
Virtual Conference – EDA: The Next Big Things - Clive Maxfield, 08/30/2010
Fairchild Semiconductor’s Worldwide Power Seminars Highlight Energy-Efficient Design Techniques - Lee H Goldberg, 08/27/2010
ESC Boston: Only 40 BeagleBoards Left – Secure Yours Today! - Clive Maxfield, 08/18/2010
Linear Technology’s Programmable 1A Buck-Boost 2-Cell Supercap Chargers Feature - Lee H Goldberg, 08/17/2010
New Power Architecture® Silicon Roadmap... - Phyllis Grabot, 08/12/2010
Thought-Provoking Beans: Saving teens in crisis - Clive Maxfield, 08/12/2010
It's electric (Mercedes, that is) - Rick DeMeis, 08/12/2010
Demystifying Powerline Impedance - A Key to PLC Design Success - Lee H Goldberg, 08/12/2010
Show: All Blogs Articles Reviews Tech-TipsCommunity Discussions
Community Wall
Despite proliferating so-called digital circuits (technically, analog circuits that operate nonlinearly to provide a physical implementation of a digital abstraction) our world—the source and destination for signals and data—steadfastly remains an analog system. There’s hardly an area or application in our industry—from power supplies to photonic interfaces—that doesn’t depend on the multiparametric behaviors of physical devices and interconnects.
So that, in an outsized nutshell, is what the Analog & Mixed Signal Community is about. It’s a huge canvas—far bigger than one person can fill—which is why I’m using my first stroke of the brush to invite your participation. Read and respond, or better still, initiate topics you believe are of interest to the rest of the Community. Meanwhile, I look forward to our interactions.