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相关概念视频

MOS Capacitor01:25

MOS Capacitor

789
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
789
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

339
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
339
MOSFET: Depletion Mode01:20

MOSFET: Depletion Mode

360
Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
360
Non-ohmic Devices00:51

Non-ohmic Devices

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In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
Consider a simple circuit consisting of a battery, a diode, and a resistor. A...
1.1K
Semiconductors01:22

Semiconductors

708
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
708
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

782
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
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相关实验视频

Updated: Jul 7, 2025

Gradient Echo Quantum Memory in Warm Atomic Vapor
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一个高精度的电压定量化基于电流模式计算内存SRAM.

Ruiyong Zhao1,2, Zhenghui Gong1, Yulan Liu1,2

  • 1Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200031, China.

Micromachines
|December 23, 2023
PubMed
概括
此摘要是机器生成的。

当前模式计算内存SRAM (CIM-SRAM) 的非线性扭曲限制了性能. 一个新的高精度,全动态范围IV (HFIV) 转换电路显著提高了CIM-SRAM计算的线性.

关键词:
这是一个SRAM.模拟非理想性的模拟.在内存中进行计算.高精度的全动态范围IV转换电路

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相关实验视频

Last Updated: Jul 7, 2025

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科学领域:

  • 电气工程 电气工程
  • 计算机工程 计算机工程
  • 材料科学 材料科学 材料科学

背景情况:

  • 非线性信号扭曲是当前模式计算内存SRAM (CIM-SRAM) 电路中的一个关键问题.
  • 这种非线性直接阻碍了计算性能,并限制了CIM-SRAM的整体计算能力.

研究的目的:

  • 调查CIM-SRAM电路中非线性和不一致的根本原因.
  • 提出和验证一种新型电路解决方案,以提高CIM-SRAM的准确性.

主要方法:

  • 在CIM-SRAM中对非线性起源的详细分析.
  • 开发一个高精度,全动态范围IV (HFIV) 转换电路.
  • 将HFIV电路集成到位线 (BL) 中,用于电压紧和电流镜像.
  • 使用55nm互补金属氧化物半导体 (CMOS) 工艺进行评估,并与先前研究进行比较.

主要成果:

  • 拟议的HFIV电路有效地解决了CIM-SRAM中的非线性扭曲.
  • 在8-32个SRAM位元中实现了99.92%的计算线性,在32-64个SRAM位元中达到99.8%.
  • 在1.2V供应电压下证明了性能.

结论:

  • HFIV电路是提高CIM-SRAM精度的可行解决方案.
  • 这一进步提高了CIM-SRAM技术的实际应用和计算能力.
  • 拟议的电路为当前模式的CIM-SRAM提供了显著的线性改进.