The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Capacitor based DACs are common designer's choice for projects realized in nanometer technologies. Designs kits provide several devices that can be used as capacitors. However, they exhibit serious differences in terms of linearity, minimum area and sensitivity to process disturbances The paper presents analysis of capacitive divider design to be used in 8-bit DAC realized in 65 nm CMOS process. Various...
This paper presents the frontend part of the readout interface for a capacitive MEMS microphone designed and fabricated in 0.35 μm CMOS technology. The developed readout interface will be used in a noise dosimeter applicable in very noisy and harsh environment. The prototype chips were measured and the main parameters evaluated. The achieved results demonstrate low harmonic distortion, low noise and...
Reversible circuit synthesis is an important branch of low power consumption circuit design. The idea of a logic circuit with no losses of information during computation has impact on power consumption and on the other hand makes the use of classical circuit synthesis algorithms impossible. In the area of reversible circuit design there is still lack of good algorithms. During last 15 years many heuristic...
Reversible logic circuits are one of the solutions to the problem of conventional microelectronic technology reaching its limits. Unfortunately, efficient reversible system design requires different approaches than conventional solutions; the current methods of reversible function synthesis have certain limitations, including their complexity and scalability. This paper presents the application of...
A practical way for the realisation of LC VCOs is presented. The design plan takes frequency and power constraints as input parameters, uses available inductor, varactor and transistor models for basic simulations and delivers a dimensioned circuit. Both, low phase noise and low power design fundamentals are respected, as well as NMOS-, PMOS- and CMOS transistor cores can be used. The design plan...
This paper presents the circuits and systems developed for testing the DSToTIC3 ASIC. Detailed study of the estimated noise performance in the presence of realistic external components is also a subject of this paper. DSToTIC3 is a prototype, 8-channel front-end electronics designed for the regime of long silicon strip sensors and interconnects of new tracking detectors. Layout and general architecture...
This paper deals with design of readout system, and then its monolithic implementation, intended for spectroscopy in THz range. At the beginning, the fundamentals of THz spectroscopy based on selective NMOS pixel line, and its possible applications for materials identification are presented. Next, the preceding work on single-channel readout circuit is shortly recalled, with a special emphasis on...
The paper presents logic concepts of scalable architecture of a system for emulation purposes along with dedicated, underlying FPGA-based board modules as an implementation platform. These modules provide scalability of emulation system and support full system functionality. This article also presents an analysis of feasibility of the scalable system based on a hybrid-structure. The system consists...
A wideband CMOS receiver front-end for radio applications operating between 300 MHz and 900 MHz is presented. In order to obtain channel selection with image-rejection and out-of-band interferers attenuation, both low-noise amplifier (LNA) and mixer incorporate a N-Path signal processing technique. The effectiveness of this N-Path filtering is investigated by comparing distinct combinations of clock...
This paper describes the boost converter analyses using electrothermal average models. The form of electrothermal average models of the diode — transistor switch and the inductor dedicated for SPICE is shown. The usefulness of the presented models to calculate the characteristics of the boost converters is shown on the example of a boost converter containing the inductor with the ferrite core. The...
This paper discusses on the practical example of a power diode attached to a heat sink the problem of heat transfer coefficient temperature dependence and its importance for free convection cooled electronic systems. The average values of this coefficient are estimated from multiple measurements of device cooling curves performed for different device heating currents. These values are used then for...
3D stacking of integrated circuits is a promising idea for increasing the processor performance. However, the major challenge is overcoming thermal issues due to excessive power density. In this paper, using Intel's Haswell processor as an example, we analyze the thermal behavior of an eight-core processor implemented as a 2D chip and as a 3D architecture with two layers. We also investigate the use...
The paper refers to modelling characteristics of power LEDs with thermal occurrences taken into account. The electrothermal model of the considered class of devices dedicated for SPICE is proposed. This model takes into account self-heating phenomena and the influence of temperature on their electrical and optical characteristics. The form of the worked out model is described and the results of verification...
This paper presents the Finite Difference Method solution of Dual-Phase-Lag heat transfer model appropriate for a thin one-dimensional problems with a heat flux heating on the one side and a fixed reference temperature on the other side. The simulation results are shortly compared with Fourier-Kirchhoff heat equation model.
Thermal characterization techniques require precise powering and accurate data acquisition equipment. The proper powering is complex due to electrical and thermal stability issues and some device properties. A few methods require trials to ensure the proper powering of the devices. New compound semiconductor devices have further stability issues at low currents and high voltages. This paper analyzes...
The aim of this paper is energy dissipation analysis in regards to supply voltage and temperature. The basis of all simulations are 12 different transistors coming from 6 different CMOS technologies (from 180nm to 14nm). Dynamic energy used to switch a gate from one state to the other was evaluated in a range of temperature for different supply voltages. In order to guarantee a realistic timing of...
In this contribution, two different approaches to the analysis of nonlinear analog circuits in the frequency domain using scattering variables are examined, the nonlinear scattering parameters (S-parameters) based on the Volterra series and the X-parameters. After the theoretical backgrounds are shortly recapitulated, the benefits and drawbacks of each method are outlined. Both methods are applied...
Electro-thermal models are commonly used in simulations and designing MEMS devices, also in case of microbolometers. These models allow to estimate sensors performance before fabrication that consequently impacts on fabrication cost. Coupling of electric and thermal domains and building appropriate model for carrying out simulations are crucial to detect all phenomena having impact for Readout Integrated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.