There are three main types of integrated circuit testing:
Chip verification test
Mass production testing
Aging test burn in
Verification test, also known as chip verification, is mainly used to verify whether a new design functions correctly, whether parameter characteristics comply with specifications, and whether the circuit stability and reliability are tested before mass production. The testing scope includes functional testing and AC/DC testing, and the testing items are relatively comprehensive. In addition to debugging, its main purpose is also to prepare for mass production testing. The verification cycle is directly related to the quality and competitiveness of the product, as well as the time of market launch.
Mass production testing, also known as production testing. Mass production testing is located in the later stage of the entire IC production system, and its main function is to detect defects that occur during the manufacturing process of ICs and the causes of defects. Therefore, mass production testing is an important step in ensuring the yield of IC products and providing effective data for engineering analysis. Mass production testing is charged based on testing time, and the price of testing equipment will also affect the hourly testing cost, directly affecting the cost of the product. Therefore, improving testing coverage and efficiency is very important.
Burn in is mainly used for testing reliability. Various acceleration factors are used to simulate the long-term failure model of analog devices, commonly including high temperature and high voltage.
The basic principle of integrated circuit testing is to apply excitation to the chip through test vectors, measure the chip's response output, and compare it with the predicted results in advance. If it meets the requirements, it generally indicates that the chip is good. If it does not meet the requirements, it is a defective chip and cannot enter the market at the price of a good chip or cannot enter the market.

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