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Designing of MEMS devices requires modeling step. Many devices combines mechanical and electrical domains. Very often it is desired to use one simulation tool that allows taking into account both domains. Such functionality has CADENCE environment. In this paper we do such simulations using developed macro model of capacitive MEMS accelerometer. The accelerometer is described in Verilog-A language...
The article presents the results of the application of golden section search for selection of the MEMS electro-actuator comb length to receive the desired displacement at given voltage heating. The proposed solutions have been implemented programmatically using the ANSYS system.
This paper presents an approach to dynamic thermal modeling of micromachined microbolometers. Firstly, all the important factors influencing temperature of infrared radiation sensing elements are identified in repeated numerical thermal simulations performed for a detailed device model, where temperature values were computed for time instants equidistantly spaced on the logarithmic time scale. Secondly,...
This paper discusses the problem of determining a thermal model of an electronic system based on the spectral analysis of its step temperature response. The proposed method yields equivalent RC Cauer ladder thermal models, which consist of only a few RC stages, but produce very accurate estimates of circuit temperature. Moreover, the values of model elements have physical significance. Such a thermal...
This paper discusses the possibility of estimating in real time internal heat source temperature values based on the sensor measurements available only at circuit boundaries. The chances and some fundamental limitations of such a boundary temperature scan approach are illustrated based on an example of a test ASIC. This circuit contains a matrix of heat sources which can be individually switched on/off...
This paper presents simulations and measurements of an integrated PTAT sensor. The sensor is equipped with an overheat protection circuit and was implemented in an ASIC containing matrices of heat sources and junction temperature sensors. The PTAT sensor is used for temperature monitoring and it is responsible for issuing warning signals in a case of chip overheat. Particular attention is paid to...
This paper presents measurements and simulations of a test integrated circuit. The circuit contains a matrix of heat sources and a set of temperature sensors, what renders possible measurement of circuit temperature in real cooling conditions inside a closed package. The measurements are validated for different patterns of power dissipation and cooling conditions with numerical simulations. Based...
In this paper the multidomain simulations of silicon sensors are presented. Authors on the basis of electro-thermal converter show the idea of operation basic structure made by silicon. All structures were simulated in ANSYS and SUGAR software. They allow checking the behavior of such sensors as electro-thermal converter, silicon micromirror, comb-drive resonator, etc. Simulation results are valuable...
Modern electronic circuits require innovative thermal design and management solutions throughout all their design phases; starting from their conception to the final application. These novel solutions should provide both the designer and the user with the possibility to optimize the design, create adequate thermal models or perform on-line temperature monitoring of a circuit. This particular paper...
This paper presents initial works above simulator of electromagnetic compatibility phenomenon in integrated circuits. First part of this article presents the disturbance pulses library, which is being built at the present. Second part shows two considered solutions and introductory simulations which afford to estimate every of this two solutions. Because works are on basic stage a lot of place of...
In this paper the usage of electrothermal simulator for analogue circuit design is presented. In the first part the operating and usage rules are presented. In the second part the operational amplifier is presented with application of this software. In the third part the current mirror as an example is shown.
The aim of This work is to introduce the new approach of modelling, simulation and design of the sigma-delta converters using VHDL-AMS language. The two main structures of the analogue to digital converters are presented. First solution refers to the description of the 8-bit sigma-delta converter in VHDL-AMS language. On the basis of such approach the advantages and disadvantages are discussed. The...
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