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Internal principle of ADC
After using ADC for so long, I‘ve never looked at the internal principle of ADC and how to get a good Jing degree. Today, I saw a good Guan document of St....
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Reverse voltage protection of battery charger
Steven Martin, battery charger design manager introduction There are several well-known ways to deal with power supply voltage reversal. The most ob...
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How about the sound quality of class D digital power amplifier chip?
In the 21st century, with the progress of the times and the development and innovation of science and technology, digital power amplifier technology is wide...
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Is there a common tool for DC / DC voltage conversion?
Most applications or sub circuits need to provide constant voltage power supply within a certain voltage tolerance range to ensure normal operation. Battery...
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The larger the filter capacitance, the better?
"Decoupling refers to taking further filtering measures on the power supply to remove the influence of mutual interference of signals between two stages thr...
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Slow rising edge signal of EMC immunity
In EMC design and processing, engineers pay attention to rapidly changing signals because the rising edge time of these signals is very short. From the pers...
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Differences between asynchronous and synchronous DC / DC converters introduction...
In various systems such as automobiles, industrial automation, telecommunications, computers, white goods and consumer electronics, the demand for power sup...
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Resistance string DAC Architecture Principle - resistance string theory
Resistance string DAC is sometimes called Kelvin voltage divider or Kelvin Varley voltage divider (named after its inventor), which is one of the most direct me...
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Do not let the USB voltage drop to slow down the charger
Portable devices such as mobile phones and tablets can charge faster than before. To obtain fast charging time, the voltage on the charger must be maintaine...
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What is a bone conduction earphone
If a few years ago, the word earphone only often appeared in the hifi earphone circle, now it has become a familiar device for many novice users; The full n...
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Design of audio signal chain for non audio experts
Study audio components from the perspective of importance to applications In this article, we will begin to decode the audio product specification in or...
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Power timing specification: timing operation when the power supply is turned on
As described in the previous article, the timing of specification ① is to output the three systems of 1.2V, 3.3V and 1.5V in sequence. The timing work will...
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Signal noise ratio measurement of digital power amplifier
What is the signal-to-noise ratio? Signal to noise ratio is the ratio between the maximum undistorted sound signal intensity produced by the sound source an...
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Control method of breathing lamp based on single chip microcomputer
We usually see all kinds of indicator lights on various devices, which represent the operation of different functions. The indicator light emitted by the lamp i...
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Intelligent speech topic (III): Pan speech recognition
Chapter 3 of intelligent speech: Pan speech recognition. After the device obtains the voice signal, How to convert it into the content to be recognized (text, s...
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Selection principle of resistance value of pull-up resistance
For the design of COMS gate, please refer to 74hc series. During the design, the leakage current of the pipe can not be ignored, and the actual current of IO po...
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RGB LED color control via Bluetooth
Smart lights are becoming more and more popular, and are steadily becoming a key part of smart home. Smart light enables users to control the light through the ...
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Voltage detectors and monitors - reset various functions in the IC
In the first part of this series, I defined the voltage detector and monitor / RESET IC, and explained the different output types and some basic equipment. ...
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Introduction series of intelligent speech recognition technology (Part I)
At the beginning of this series of articles, we will explore the core algorithms, models and future development trends of automatic speech recognition and langu...
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How to calculate the power consumption of charge pump in DC-DC conversion withou...
A common problem in system engineering is that the main power supply of subsystem can not meet its power demand. In this case, the available power rail cannot b...
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