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相关概念视频

Cascaded Op Amps01:16

Cascaded Op Amps

627
Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
627
Design Example: Vintage Mixing Console01:17

Design Example: Vintage Mixing Console

229
A sound engineer at a music company recently encountered a problem. The output from their newly acquired studio's vintage mixing console was too low for the requirements of modern recording equipment. To rectify this situation, the engineer decided to design an audio pre-amplifier using an operational amplifier (op-amp) to boost the signal level.
The specifications for the pre-amplifier were clear. It needed to amplify the audio signal by a factor of 10, have an input impedance above 10...
229
Active Filters01:25

Active Filters

818
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
818
Small-Signal Analysis of MOSFET Amplifiers01:23

Small-Signal Analysis of MOSFET Amplifiers

545
In small-signal analysis, a MOSFET transistor amplifier acts as a linear amplifier when operating in its saturation region. The gate-to-source voltage (VGS) of the MOSFET is the sum of the DC biasing voltage and the small time-varying input signal. This combination sets up the operating point and modulates the drain current (ID) that flows from the drain to the source. When a small AC signal is superimposed on the DC bias voltage at the gate, the instantaneous drain current comprises three...
545
Operational Amplifiers01:17

Operational Amplifiers

956
The operational amplifier, often referred to as an op-amp, is a multifaceted building block of a circuit. This electronic component functions like a voltage-controlled voltage source and can also be used to create a voltage- or current-controlled current source. The design of an operational amplifier enables it to execute mathematical operations when external components like resistors and capacitors are linked to its terminals. An op-amp has the capacity to sum signals, amplify a signal,...
956
MOSFET Amplifiers01:17

MOSFET Amplifiers

153
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
153

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相关实验视频

Updated: Jun 25, 2025

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
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1V可调节的高质量通用过器使用多输入操作传导放大器.

Montree Kumngern1, Fabian Khateb2,3,4, Tomasz Kulej5

  • 1Department of Telecommunications Engineering, School of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.

Sensors (Basel, Switzerland)
|May 25, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的电压模式通用过器,使用多输入操作传导放大器 (MI-OTA) 用于低电压,低频应用. 过器实现了多功能过功能,具有独立调节的参数和低功耗.

关键词:
运行传导功率放大器的运行传导功率放大器这是一个通用过器.电压模式电路的电压模式.

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相关实验视频

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科学领域:

  • 电气工程 电气工程
  • 模拟集成电路设计模拟集成电路设计
  • 信号处理 信号处理

背景情况:

  • 操作传导放大器 (OTA) 是模拟电路设计的基本组成部分.
  • 通用过器通过从单个拓提供多个过器响应来提供信号处理的灵活性.
  • 低压和低功耗电路设计对于现代便携式和集成电子系统至关重要.

研究的目的:

  • 介绍一个新的多输入单输出 (MISO) 电压模式通用过器.
  • 为了在单个电路中实现多功能过功能 (低通,高通,带通,带停止,全通).
  • 在低电压,低功耗设计中实现自然频率和质量因子的独立电子调制性.

主要方法:

  • 采用四个多输入操作传导放大器 (MI-OTA) 和三个接地电容器实现了一种全新的通用过器拓.
  • 利用批量驱动的多输入MOS晶体管技术来实现OTA的多输入.
  • 独立控制自然频率和质量因子通过透导和电容比.

主要成果:

  • 拟议的过器同时实现低通,高通,带通,带停止和全通响应,具有非逆转和逆转传输功能.
  • 实现了自然频率和质量因子的独立电子调制性.
  • 经过证明的低压运行 (1V供应),低功耗 (120μW在5μA设置电流下),40dB动态范围和-43.6dB的第三次调节扭曲.

结论:

  • 提出的基于MI-OTA的电压模式通用过器适用于低电压,低频应用.
  • 该电路提供了高性能,具有多功能和独立调节的过特性.
  • 模拟结果证实了拟议过器拓学的有效性和可行性.