Is the crystal oscillator circuit design reasonable?

Almost all products using MCU, the peripheral circuit is inseparable from the crystal oscillator circuit design, most electronic designers will be exposed to the crystal oscillator circuit from the beginning, but in fact, few people really understand how the crystal oscillator circuit works, when the crystal oscillator appears Before the problem, most people will not […]

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Narrowband FSK application analysis of TH7122 and TH71221 transceivers used

This application note introduces the TH7122 and TH71221 transceivers used in narrowband FSK applications. It briefly describes narrowband considerations, VCO design, PLL setup, and transmitter setup along with the receiver portion of the application circuit. Narrowband Considerations The most common applications for low-power transceivers are those with relatively wide channel bandwidths and spacing. In these […]

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Difference between blocking and non-blocking assignment in Verilog

Source: “Verilog Digital System Design (Xia Yuwen)” The language construct of blocking and non-blocking assignments is one of the most difficult concepts to understand in the Verilog language. Even some experienced Verilog designers don’t quite get it right: when to use non-blocking assignment and when to use blocking assignment to design a circuit that meets […]

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PCB Design of Microcontroller EMC – Oscillator

Oscillator User manuals for NEC microcontrollers often contain a chapter on oscillators, which includes permission and non-permission routing rules, make sure to read this chapter before designing the clock PCB circuit. Optimized output pins The quartz crystal oscillators of NEC microcontrollers are usually optimized for a fixed frequency range, so it is not a critical […]

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What role does crystal oscillator play in single chip microcomputer system

Crystal oscillators, also known as crystal oscillators, are usually divided into two types: active crystal oscillators and passive crystal oscillators. Passive crystal oscillators are generally called crystals, while active oscillators are called oscillators. From the name of the crystal oscillator, it can be known that it is destined to oscillate constantly. The single-chip microcomputer is […]

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On the construction of superheterodyne radios

Cell phones are not the only devices benefiting from smaller and more integrated communications IC technology. The simple three-IC superheterodyne radio in Figure 1 requires only a 10-foot antenna to receive stations in the 4.5 to 10 MHz range from anywhere in the world. Superheterodyne radios work by mixing an incoming RF signal with a […]

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Drive any electronic clock with a high-precision 10 MHz reference

Most electronic clocks, whether analog or digital, use a 32.768 kHz crystal based crystal oscillator (XO) as a reference. In fact, it is the same crystal that many microcontroller systems usually use as real-time clocks. The typical annual stability of these crystals is ± 3ppm [1]. Although this is sufficient for most applications, it is […]

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Working principle analysis of quartz resonator

quartz crystal Quartz crystal is used as time or frequency reference source in the circuit, which can be called the heart of equipment. Quartz crystal resonator is also called passive crystal oscillator or resonator In 1880, Curie brothers Jacques and Pierre Curie discovered that when quartz crystal was under pressure, the surface would generate charge, […]

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Exhibitor information – Yingdali Electronics – the leader of crystal products

In recent years, thanks to the general trend of industrial transformation and upgrading in China, electronic clusters have been rising, and the electronic information industry has become a pillar industry in many provinces and cities. At present, the total output value of China’s electronic components industry accounts for about one fifth of the electronic information […]

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Types and application cases of oscillators

Application and oscillation conditions of oscillation circuit A circuit that can automatically convert DC electric energy into AC signal with certain amplitude and frequency without external signal is called oscillation circuit or oscillator. This phenomenon is also called self-excited oscillation. In other words, the circuit that can produce AC signal is called oscillation circuit. An […]

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