基于电流输送和OTA的可编程增益、温度补偿对数放大器

2018 International Conference on Computing and Network Communications (CoCoNet) Pub Date : 2018-08-01 DOI:10.1109/COCONET.2018.8476890

Dmitriy Kupreyev, Kassen Dautov, M. Hashmi

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引用次数: 1

摘要

本文报道了一种采用第二代电流传送带(CCII)和可操作跨导放大器(OTA)的新型对数放大器。它利用经典二极管型指数I-V关系，并允许电压以及电流输入和输出。此外，所提出的设计不会受到基于运算放大器的对数放大器的不稳定性问题的影响，其背后的原因在于反馈回路中存在有源元件。所得结果显示出对数特性和温度不敏感性，与理论假设完全一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Programmable Gain, Temperature Compensated Logarithmic Amplifier based on Current Conveyor and OTA

This letter reports a new logarithmic amplifier using a second generation current conveyor (CCII) and an operational trans-conductance amplifier (OTA) is presented. It utilizes the classical diode type exponential I-V relationship and allows volt- age as well as current inputs and outputs. Moreover, the proposed design does not suffer prom the presence of the instability issue of an op-amp based logarithmic amplifiers, the reason behind which lies in the presence of the active element in the feedback loop. The achieved results demonstrate logarithmic behaviour and temperature insensitivity and is in complete consonance with the theoretical postulation.

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2018 International Conference on Computing and Network Communications (CoCoNet)

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