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相关概念视频

MOS Capacitor01:25

MOS Capacitor

798
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...
798
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

786
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.
786
RC Circuits: Charging A Capacitor01:30

RC Circuits: Charging A Capacitor

3.7K
A circuit containing resistance and capacitance is called an RC circuit. A capacitor is an electrical component that stores electric charge by storing energy in an electric field. Consider a simple RC circuit having a DC (direct current) voltage source ε, a resistor R, a capacitor C, and a two-way position switch. In the circuit, the capacitor can be charged or discharged depending on the position of the switch.
When the switch is moved to connect the battery, the circuit reduces to a simple...
3.7K
Capacitors and Capacitance01:18

Capacitors and Capacitance

7.6K
A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
7.6K
PI Controller: Design01:24

PI Controller: Design

285
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
285
Capacitors01:15

Capacitors

440
Capacitors play a crucial role in car radios, where they filter and store frequencies to ensure clear signal reception. Essentially serving as energy storage devices, capacitors store energy within their electric field and are composed of two parallel conducting plates separated by a dielectric.
When a voltage source is connected to a capacitor, positive and negative charges accumulate on the opposite plates. This accumulation generates a potential difference that equals the product of the...
440

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相关实验视频

Updated: Jul 10, 2025

Patterned Photostimulation with Digital Micromirror Devices to Investigate Dendritic Integration Across Branch Points
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基于自适应集成电容器的高动态像素结构

Suiyang Liu1, Zhongjie Guo1, Ruiming Xu1

  • 1Department of Electronic Engineering, Xi'an University of Technology, No. 5, Jinhua South Road, Xi'an 710048, China.

Sensors (Basel, Switzerland)
|November 25, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的红外图像传感器像素结构,使用自适应电容. 这种设计克服了噪音和全井容量之间的权衡,显著提高了红外成像的动态范围.

关键词:
这是一个CMOS红外图像传感器.适应电容的适应电容.高动态范围的高动态范围.大型大型井的全容量.

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科学领域:

  • 红外成像技术是红外成像技术.
  • 半导体设备物理学 半导体设备物理

背景情况:

  • 红外焦平面集成挑战了动态范围的改善.
  • 一个关键的限制是噪音和充分井容量之间的权衡.

研究的目的:

  • 为红外图像传感器提出一个高度动态的像素结构.
  • 为了解决在不同光线条件下传统像素设计的局限性.

主要方法:

  • 使用了适应电容设计,采用了反向MOS电容器.
  • 使用55nmCMOS工艺技术实现了一个12,288 × 12,288像素阵列.

主要成果:

  • 拟议的像素结构显示适应电容从6.5 fF变化到37.5 fF随着光强度的增加.
  • 实现了一个小的像素大小 (5.5μm × 5.5μm) 与一个大的全井容量 (1.31 Me−).
  • 证明了可变的转换增益,噪声低于0.43e−,动态范围超过130dB.

结论:

  • 适应容量像素结构有效地解决了噪音-满井容量冲突.
  • 这一创新使红外图像传感器在各种照明条件下实现高动态范围性能.