Category: Technical papers

Accelerating Mixed Signal System Design Verification using New Diagnostic Method
ASIM – STS/GMMS Workshop, Dresden, Germany
D.Dammers, D.Schollän, L.M.Voßkämper

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, …

Accelerating Mixed Signal System Design Verification using New Diagnostic Method
ASIM – STS/GMMS Workshop, Dresden, Germany
D.Dammers, D.Schollän, L.M.Voßkämper
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Approach for modeling and evaluation of an actuator model for the positioning of read-/write heads in hard disk drives
Multi-Nature Systems (MNS), Ulm, Germany
T.Wiegand, D.Peters, St.Paul, R.Laur, R.Rosing, A.Richardson, B.Vigna, L.Voßkämper

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. …

Approach for modeling and evaluation of an actuator model for the positioning of read-/write heads in hard disk drives
Multi-Nature Systems (MNS), Ulm, Germany
T.Wiegand, D.Peters, St.Paul, R.Laur, R.Rosing, A.Richardson, B.Vigna, L.Voßkämper
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Inductorless versus Inductor-Based Integrated Switching Regulators: Bill Of Material, Efficiency, Noise, and Reliability Comparisons
M.Renaud, Y.Gagnon,

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 …

Inductorless versus Inductor-Based Integrated Switching Regulators: Bill Of Material, Efficiency, Noise, and Reliability Comparisons
M.Renaud, Y.Gagnon,
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Analog & Mixed Signal IC Debug: A high precision ADC application
F.Poullet

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 …

Analog & Mixed Signal IC Debug: A high precision ADC application
F.Poullet
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A novel technique to create behavioral models of differential oscillators in VHDL-AMS
Xth Inter. Workshop on Symbolic & Numerical Methods, Modeling & Applications to Circuit Design, Erfurt, pp.241-246
M.Kraemer, D.Dragomirescu, R.Plana

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 …

A novel technique to create behavioral models of differential oscillators in VHDL-AMS
Xth Inter. Workshop on Symbolic & Numerical Methods, Modeling & Applications to Circuit Design, Erfurt, pp.241-246
M.Kraemer, D.Dragomirescu, R.Plana
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VHDL-AMS models of millimeter-wave oscillators for simulations of system-on-chip behavior
Colloque GDR SOC SIP, Paris (France), 2p. M. Kraemer, D. Dragomirescu, R. Plana

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 …

VHDL-AMS models of millimeter-wave oscillators for simulations of system-on-chip behavior
Colloque GDR SOC SIP, Paris (France), 2p. M. Kraemer, D. Dragomirescu, R. Plana
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Keeping the best audio quality in mobile phone by managing voltage drops created by 217 Hz transients
M.Maurel

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 …

Keeping the best audio quality in mobile phone by managing voltage drops created by 217 Hz transients
M.Maurel
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