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Multisynth-based Architecture

F17

Traditional clock generators use a simple integer-N phased-locked loop (PLL)-based architecture. The output clock frequency is a function of the input clock frequency and the PLL divider values as shown in the equation
Equation: fOUT = fIN.N/P.R
Traditional single PLL-based IC solutions are suitable for simple integer clock multiplication of reference inputs or clock generation from crystal inputs. However, many applications require clock generation of multiple non-integer-related frequencies (e.g., 125 MHz Ethernet and 106.25llMHz Fibre Channel). Traditional solutions require that the crystal frequency be changed to support each unique frequency plan. This forces the designer to use one or more custom crystals and multiple clock generator ICs to generate the required set of frequencies, increasing the cost, complexity and power consumption of the overall solution.

New Any-Rate Clock Multiplier Architecture Simplifies Design
Recent advances in mixed-signal analog design have made it possible to provide any-rate frequency synthesis from a single device. Silicon Labs newest clock architecture leverages a fractional-N PLL used in concert with a low-jitter fractional divider termed MultiSynth to produce any-rate frequency synthesis on multiple output clocks. The flagship of this new product family is the Si5338 Any-Rate, Any-Output Quad Clock Generator. This technology dramatically simplifies timing architectures by integrating the frequency synthesis capability of four PLLs in a single device, greatly reducing size and power requirements compared to traditional solutions.

MultiSynth Technology
The Si5338s low phase noise, high-frequency VCO supplies a high-frequency output clock to the MultiSynth block on each of the four independent output paths. The first stage of the MultiSynth architecture is a fractional-N divider, which switches seamlessly between the two closest integer divider values to produce the exact output clock frequency with 0 ppm error. To eliminate phase error generated by this process, the MultiSynth calculates the relative phase difference between the clock produced by the fractional-N divider and the desired output clock and dynamically adjusts the phase to match the ideal clock waveform. This novel approach makes it possible to generate any output clock frequency without sacrificing jitter performance. Based on this architecture, each output clock can be individually programmed to generate any frequency from 0.16 to 350 MHz, and select frequencies to 700 MHz. Typical jitter performance enabled by this MultiSynth-based architecture is 1 ps RMS.

BIM Modeling- Adding Technical Advantages to Construction and Architecture

W7

With the extensive advancements in technology, the process of construction and architecture have become more organized and streamlined. A highly precision and technology driven process, BIM modeling consists of steps for generating as well as managing digital blueprints of a building, irrespective, of its nature whether a factory, hotel, office or any other form of physical structure. The process of digitizing important data relevant to the construction of a building, aids decision-makers to make critical judgments and evaluations about modification across its lifespan including in habitation, operation, and demolition. It is now highly appreciated by architects, civil engineers, constructors and others occupied in construction of a building and infrastructure sector across the globe.

To carry out the entire project management in an effective manner, a BIM Manager or a VDC Project Manager takes control of the entire process. In projects, they work in co-ordination with Design Construction Team on behalf of the client. However, companies are also hiring BIMs at different stages of the project delivery and handling. Thus, the intensive level of dynamism and ease of customization provided by converting these important data into a suitable digital format, construct multifunctional structure on the surface. The engineering solutions offered by expert companies are now preferred by every construction firm for their projects.

A revelation to traditional building design systems that were initially dependent on two-dimensional drawings of building sections, plans, elevation and other parts, digitization of maps offers numerous advantages. It offers updated technology which include the 3D maps and introduction of factors such as time and cost as an essential part of the project data, the other two important dimensions to modern day digitized maps of home and offices.

It not only included, geometric calculations into building maps but also comprised of other factors as mention of surface space, geographic study, building material study, ergonomics, green building, light analysis, etc. which were neglected earlier. This provides an efficient solution for building construction in the hands of architects and engineers.

Many companies specializing in Engineering Design Services ensure that they make use of this sophisticated technology to offer customized solutions as per the construction concepts, ideas, and design requirements put forth by clients. The design tool of this building solution presents the different views of a building model for construction and other usages of the building. In this model, a slight change in a one object of the model or design, automatically, changes other dependent model and an architect do not need to break model for every change.

The author is an experienced Content writer and publisher for Business Development. Visit us to know more about Engineering Design Services, BIM modeling and Digitization of maps.