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Both the AD620 and AD623 are single instrumentation amplifiers with identical pinouts.
The main difference is that the AD620 must use a positive and negative power supply, while the AD623 can be supplied with a positive or negative power supply.
The original board is AD620, which can be replaced with 623; If the original board is an AD623, it may not be possible to replace it with a 620 (depending on whether the power supply of the original board circuit is dual or single).
After the AD620 and AD623 are replaced in the MCU product, the program can work normally without modification.
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This is something that needs to be exercised by yourself, after all, you still need to deal with the problem by yourself, and the meticulous care of parents is also a two-sided thing, so let's let it go more.
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It's good to take your time, you can't rush.
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Isn't that normal
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