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A low-voltage fully differential current-mode continuous time delta-sigma modulator is presented for application in electrochemical sensor arrays. Although a first order topology is realized by using a single differential integrator, second order noise shaping is achieved. A differential quantizer based on current controlled oscillators (CCOs) allows a current-mode implementation with high noise-immunity...
In this paper we present a novel successive approximation register (SAR) analog-to-digital converter (ADC) designed for the applications that demand many such converters working in parallel in a single chip. For this reason we have put a special emphasis on a very low chip area and low power dissipation. The ADC operates in the current-mode. The digital-to-analog converter (DAC), which is one of the...
The objective of this paper it to present a work concerning a proposed design and development of an analog Pulse Width Modulation (PWM) Application Specific Integrated Circuit (ASIC) with built-in analogue control loop and PWM for DC/DC power converters used in space applications. The described circuit can be used in avionics, aerospace devices and vehicles. The paper presents the general requirements...
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