数字可编程电流放大器

2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI:10.1109/ISPACS.2012.6473576

D. Prasertsom, T. Photsathian, W. Tangsrirat

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引用次数: 1

摘要

本文提出了一种用于NMOS集成电路实现的数字可编程电流放大器(DP-CA)。为了提供精确的数字控制增益特性，所提出的DP-CA包括可数字控制的电流比例增益块。所提出的DP-CA可以在±1.25V的低电源下工作。作为该电路的一个应用实例，描述了数字可编程电流模式一阶全通滤波器。并给出了采用0.35 μm TSMC CMOS工艺参数的仿真结果。

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Digitally programmable current amplifier

In this paper, a the digitally programmable current amplifier (DP-CA) for NMOS integrated circuit implementation is presented. To provide precise digital control of the gain characteristic, the proposed DP-CA comprises current proportional gain blocks that can be digitally controlled. The proposed DP-CA can be operated from a low power supply of ±1.25V. As an application example of the proposed circuit, the digitally programmable current-mode first-order allpass filter is described. Simulation results using 0.35-μm TSMC CMOS process parameters are also included.

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2012 International Symposium on Intelligent Signal Processing and Communications Systems

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