This article is about classic Q&A on ADC/DAC design, covering common issues such as clock duty cycle, common mode voltage, gain error, differential phase error, intermodulation distortion, and more. 1. What is Small Signal Bandwidth (SSBW)?Small Signal Bandwidth (SSBW) refers to the frequency at which the output amplitude drops to a specified value compared to … Read more
Source: Tiger Says Chip Original Author: Tiger Says Chip This article introduces the functional architecture, classification applications, challenges, and trends of DSP chips. Comparing DSPs to “math prodigies”: while ordinary CPUs (like MCUs) excel at multitasking scheduling (the “liberal arts students”), DSPs specialize in quickly solving complex formulas (the “science students”), achieving “mental calculation capabilities” … Read more
In the early 21st century, phased array ultrasonic technology expanded from the field of medical imaging to industrial non-destructive testing (NDT), establishing its significant position. The industrial phased array ultrasonic testing (PAUT) system utilizes multiple independently controlled elements or channels to emit and receive ultrasonic signals. Compared to traditional single-channel systems, PAUT can more accurately … Read more
“Internet of Things Communication and Sensing: Theory and Practice” ISBN: 9787302683834 Authors: Wang Jiliang, Tong Shuai Price: 69 Yuan Comprehensively introduces the fundamental principles and implementations of Internet of Things communication and sensing, closely aligned with the forefront of the field; Combining theory and practice, covering basic knowledge, specific cases, and implementation code, providing a … Read more
The digital-to-analog (DAC) and analog-to-digital (ADC) conversion in microcontrollers is a key technology that connects digital systems with the analog world. 1. Basic Concepts 1. DAC (Digital-to-Analog Converter) Function: Converts digital signals into analog signals (such as voltage or current). Application Scenarios: Driving motors, audio output, LED dimming, etc. Implementation Methods: Weighted resistor networks, R-2R … Read more
“PLC High-Speed Counters: The Black Technology That Makes Equipment’s ‘Heartbeat’ Accurate to 0.1%!” 1️⃣ Single-phase Counter: The ‘Lone Ranger’ Expertise: A single signal line can handle simple counting scenarios. Pitfall: Weak anti-interference ability, prone to ‘going crazy’ under electromagnetic interference. 2️⃣ Dual-phase Counter: The ‘Dual Swordsman’ Expertise: Two signal lines distinguish forward and reverse rotation, … Read more
In PLC programming, the positive edge and negative edge are key signal characteristics that trigger logical operations. They are commonly used to avoid signal jitter, achieve precise counting, or control execution order. If not mastered, their usage may lead to program logic confusion, false triggering, or functional failure. The following analysis covers principles, application scenarios, … Read more
Hello everyone, I am Xiao Chen. Today, let’s discuss a practical topic: how can microcontrollers output audio signals? Currently, there are two mainstream solutions: directly using a DAC (Digital-to-Analog Converter) or using PWM (Pulse Width Modulation) for analog output. Both methods have their pros and cons, and many beginners can easily get confused. Today, I … Read more
In recent years, one of the hot topics in the military sector has been chips. The United States has imposed a long-standing blockade and sanctions on Chinese chips, refusing to sell any military-grade chips and restricting many high-end civilian chips. The ZTE incident serves as a significant lesson: without mastering core technologies, one can be … Read more
(This article is adapted from SemiWiki) When discussing the bottlenecks faced by Digital Signal Processors (DSPs), the focus often lies on computational throughput—such as the number of Multiply-Accumulate (MAC) operations per second, the width of vector units, and clock frequencies. However, after engaging in-depth discussions with embedded AI engineers focused on real-time voice processing, radar … Read more