Design and Measurements of Current Mode Filters Using CMOS Technology
نویسندگان
چکیده
Current mode circuits cover an important area of application like filters, neural networks and analog-digital conversion. Current mode circuits, because of their special structure, need appropriate methodology during design process. This paper is an overview of most common problems related with analog and mixed digital-analog converters and filters performed in a CMOS technology. Laboratory measurements of a current converter based on the principle of direct signal comparison have been presented. Application of the transconductance amplifiers in realization of lowpass active filters using transconductance building block has been also introduced. A direct conversion of passive RLC elements into their transconductance equivalent to create filter based on passive RLC prototype is applied. Very simple and effective design method and practical realization of switched current filters has been presented. An efficient laboratory station permits to obtain in a simply way precision characteristics of current mode circuits. Key-Words: Current mode filters, switched current filters, transconductance amplifier, CMOS technology
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