Analog chips are integrated circuits used to process analog signals, such as sound, image, temperature, pressure, etc. The manufacture of analog chips is a complex process that typically involves the following steps:
,
1. Design: The design of analog chips requires the use of electronic design automation (EDA) tools such as Cadence, Synopsys, etc. Designers use these tools to design the circuitry and layout of the chip.
2. Mask making: After the design is completed, the mask of the chip needs to be made. A mask is a template used to make a chip on a silicon wafer that contains the circuit pattern of the chip.
3. Wafer manufacturing: Wafer manufacturing is the process of processing silicon wafers into chips. This process includes wafer cleaning, lithography, etching, diffusion, ion implantation and other steps.
4. Package testing: After the chip is manufactured, package testing is required. Encapsulation is the installation of the chip in the chip package to protect the chip and provide a connection interface. Testing is the functional and performance testing of the chip to ensure that the chip meets the design requirements.
,
The manufacture of analog chips requires a high degree of technology and equipment, and requires fine processing through multiple steps. A problem at any point in the manufacturing process can cause the chip to fail or degrade performance.
Analog chips mainly include power management chips and signal chain chips. Among them, the power management chip is the chip responsible for the transformation, distribution, detection and other responsibilities of power management in the electronic equipment system, which is mainly divided into AC-DC AC\/DC conversion, DC-DC DC and DC voltage conversion (suitable for large pressure difference), voltage regulator (suitable for small pressure difference), AC and DC voltage regulator power supply.
Power management chips play different voltage and current management functions in different product applications, so different circuit designs are needed for different downstream applications. At present, power management is developing towards high speed, high gain and high reliability. The development of power management chip is an important way to improve the whole machine skills.
The signal chain chip is a chip used in the path of signal from input to output in a system, including signal acquisition, amplification, transmission, processing and other functions.