Analog chip, it is now the originator of all chips, its basis is analog circuit. The so-called simulation is the use of voltage and current to simulate the real sound, light, temperature and other physical changes. Generally composed of capacitors, resistors, transistors, etc. It looks closer to the circuits we used to see in physics.
The chip we often talk about generally refers to the digital chip, in fact, the most basic of the highly integrated chip is the circuit. Today's digital chips use digital integrated circuits, the kinds of zeros and ones that transmit computer-like programs, and so require memory, logic circuits, and tiny components.
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Digital chips, which account for more than 85% of the current chip market, are expensive and cold. The other 15% are analog chips.
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So, analog chips don't sound very advanced, what are they for?
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First of all, they are very advanced, whether it is military or communications industry, in fact, there is a great demand for analog chips. Secondly, the analog chip has two main uses, so it is divided into:
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Power management chip (also known as power analog chip), mainly including linear voltage regulator, DC\/DC switching regulator, power MOSFET, LED driver, etc., the main function of the circuit buck, boost, voltage regulator and voltage reverse;
Signal chip (also known as signal chain analog chip), mainly including amplifier, converter, comparator, analog switch, etc., the main function of analog signal amplification, frequency conversion and filtering.
However, both of these are currently unable to achieve full domestic substitution. China's large output is the power management chip, generally such domestic companies are mainly concentrated in the power management, interface, operation amplifier, audio and other fields. The signal chip, China's production capacity is very weak, mainly interface products. ADC (analog-to-digital converter, converting analog to digital) is simply not available in China, let alone high-end ADC\/DAC (digital-to-analog converter, converting digital to analog).
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However, the development of communication and multimedia technology requires higher and higher efficiency of signal processing, that is, ADC\/DAC requires higher technology, such as wider output voltage and multiple outputs. Most of all, I want it to be cheaper.
A: High-performance analog chips are the bridge between the real and digital worlds. Integrated circuits can usually be divided into analog integrated circuits and digital integrated circuits according to their functions. Analog integrated circuits are mainly used to generate, amplify and process analog signals in continuous functional form.
2. Power management chip & Signal chain chip Main subcategories Signal chain chip products are currently mainly the following products: linear products. Linear products are widely used, mainly to complete analog signal amplification, filtering, selection, comparison and so on in the transmission process.