Technical papers

Abstract The mixed-signal simulation of complete systems, i.e. the electronics with its attached peripherals, such as sensors and actuators, already has a firm place in today’s design process. While the verification of the digital part, mostly implemented in Verilog and VHDL, has gained a speed increase through the use of Accellera’s Property Specification Language PSL, […]

Kurzfassung In diesem Beitrag wird die Modellierung und die Modelloptimierung eines Mikroaktors, der zur Positionierung von Lese-/Schreibköpfen in Festplatten entworfen wurde präsentiert. Zur Modellierung wurde die Verhaltensbe- schreibungssprache VHDL-AMS verwendet. Die Simulation wurde mit dem Verhaltenssimulator SMASH der Firma Dolphin Integration durchgeführt. Zur simulationsgestützten Modelloptimierung wurde das am ITEM ent- wickelte modelbasierte Designoptimierungssystem MODOS eingesetzt.

Abstract Inductor-based Switching Regulators (SR) have historically represented the preferred architecture for power supplies. Nowadays, for low-power and highly integrated electronic systems, embedded inductor-based SRs show several limitations that can be overcome by the use of inductorless SR architectures. This paper provides a qualitative and quantitative comparison between both types of SR in terms of

Introduction Increasing pressure on production costs and, more generally, time to market, have impacted all levels of IC design. In this context, one of the major challenges is to avoid silicon failure or yield loss. Indeed, a widely accepted statistic today is that almost half of all designs fail at first silicon. Failure costs are

Abstract This paper describes an approach to model the transient and steady state behavior of differential microwave oscillators at the system level. Furthermore, phase noise characteristics can be emulated by the resulting models. The mathematical structure consist of a set of algebraic and differential equations that are solved by a VHDL-AMS interpreter. The nonlinearity occurring

There is an increasing frenzy to integrate multiple digital and analog functions in mixed-signal system-on-chip (SOCs). Integrating power management is part of this trend, but raises new issues for SOC integrators, selecting ICs for power management… Download this press release

You will find this article on the IEEE website

Introduction For future high-data rate communication systems the ultra-large frequency band around 60 GHz represents a promising alternative to the overcrowded spectra available at lower frequencies. To avoid connection losses and achieve small system size and very low cost, the transceivers will typically be designed as System on Chip (SoC) in a low cost silicon

Source of major noise Whatever the protocol used by a mobile phone, GSM or TDMA, RF transmitter switching creates the most notorious noise for the power supply. The RF power amplifier switches on and off at a rate of 217 Hz. At each of these events, a high current (up to 1.7A) is drawn from