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相关概念视频

Field Effect Transistor01:29

Field Effect Transistor

569
Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
569
Voltage Dividers01:14

Voltage Dividers

815
In electrical circuits, resistors can be connected in series, sequentially linked one after the other. In a series configuration, the same current flows through each resistor. Ohm's law is a fundamental principle to understand the behavior of resistors in series. It expresses the voltage across these resistors in terms of the current and resistance.
Kirchhoff's voltage law implies that the sum of the voltages across the resistors in series equals the source voltage. This means that the...
815
Voltage Doubler Circuit01:23

Voltage Doubler Circuit

854
A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.
854
Discrete Fourier Transform01:15

Discrete Fourier Transform

406
The Discrete Fourier Transform (DFT) is a fundamental tool in signal processing, extending the discrete-time Fourier transform by evaluating discrete signals at uniformly spaced frequency intervals. This transformation converts a finite sequence of time-domain samples into frequency components, each representing complex sinusoids ordered by frequency. The DFT translates these sequences into the frequency domain, effectively indicating the magnitude and phase of each frequency component present...
406
Applications of RC Circuits01:22

Applications of RC Circuits

3.3K
A relaxation oscillator is one of the applications of RC circuits. A neon lamp relaxation oscillator comprises a capacitor, a resistor, a voltage source, and a lamp. The lamp acts like an open circuit, with infinite resistance until the potential difference across the lamp reaches a specific voltage. At that voltage, the lamp acts like a short circuit with zero resistance, and the capacitor discharges through the lamp, thus producing light. Once the capacitor is fully discharged through the...
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相关实验视频

Updated: Sep 11, 2025

A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins
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A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins

Published on: March 22, 2012

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可排列的TDC与电压控制环振荡器用于dToF图像传感器

Liying Chen1,2, Bangtian Li1,2, Chuantong Cheng3

  • 1School of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China.

Sensors (Basel, Switzerland)
|August 14, 2025
PubMed
概括

这项研究引入了一种新的时间数字转换器 (TDC) 芯片,通过提高线性和减少误差来提高测量准确性. 新设计为dToF LIDAR系统等应用提供了高精度.

关键词:
李达尔 (LiDAR) 是一个在线游戏.在TDC TDC中使用.dToF 的时间.这就是线性线性.采样错误 采样错误 采样错误时间到数字转换器

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相关实验视频

Last Updated: Sep 11, 2025

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科学领域:

  • 电气工程 电气工程
  • 集成电路设计 集成电路设计
  • 计量学 计量学 计量学

背景情况:

  • 提高时间到数字转换器 (TDC) 的分辨率和速度通常会增加比特错误率,降低线性和测量精度.
  • 现有的TDC设计面临的挑战是采样错误和固定延迟影响精度.

研究的目的:

  • 开发一个高线性,低功耗,宽动态范围的TDC.
  • 解决当前TDC线性和精度的局限性,以满足苛刻的应用.

主要方法:

  • 在芯片制造中使用SMIC 180nm BCD工艺.
  • 实施了一种新的阶段仲裁员结构,以消除采样错误.
  • 包含一个预处理电路,以减轻START/STOP信号传输延迟错误.

主要成果:

  • 实现了高线性,差异非线性 (DNL) 在 -0.98 LSB 和 0.93 LSB 之间,以及积分非线性 (INL) 在 -0.88 LSB 和 0.95 LSB 之间.
  • 显示最高分辨率为156 ps,最大测量时间范围为1.2 μs.
  • 报告的低功耗为1.625mW.

结论:

  • 与以前的方法相比,拟议的TDC架构显著提高了线性,并减少了测量误差.
  • 由于TDC的简单性和性能,它非常适合用于直接飞行时间 (dToF) LIDAR,能够准确地测量高达数百米的距离,精度为2.25厘米.
  • 该设计实现了高精度,不需要后处理或时间校准.