Low-voltage CMOS current-mode exponential circuit with 70dB output dynamic range
作者： Cosmin Radu Popa
DOI: 10.1016/J.MEJO.2013.09.005
关键词:
摘要: The paper proposes new accurate exponential circuits, having a multitude of practical applications in analog signal processing. original method for obtaining the function is based on utilization superior-order approximation functions. accuracy proposed structures excellent and output dynamic range strongly extended as result fourth-order independence implemented technological errors temperature variations (the best architecture generator has an 70dB error smaller than ?1dB). circuits are designed implementing 0.18?m CMOS technology, low-voltage operation (a minimal supply voltage 1V). power consumptions 0.08mW, 1V. As application circuit, dB-linear VGA circuit with high will be presented. computational have possibility generating any continuous mathematical function, presenting also increased modularity controllability reduced design costs per function. being functions.The variations.The function.Display Omitted processing.The 1V).The
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