OPA2189: 丝印说明书

See p. 38/39 of the datasheet. Additional information will not be published by TI.

Hi Zhou Feng, 

Feng Zhou said:

丝印定义说明书

The silkscreen definition or marking information is proprietary information and it can not be published (as Clemens indicated). The reasons are for anticounterfeit purposes. 

If you purchase the IC product from TI E-store or TI authorized distributors, the product will be authentic. Otherwise, there are no traceability or guarantee where IC product are originated and manufactured. 

Here is the current TI E-store inventory status.

https://www.ti.com/product/OPA2189?login-check=true#order-quality

If you have other questions, please let us know. 

Best,

Raymond

Hi Zhou Feng,

Feng Zhou said:

芯片使用在产品上后出问题怎么溯源？因此时已无外箱跟内包标识标签信息。

I am unable to provide you with TI's proprietary information. Even I gave it you, the marking information is unable to help you to find 溯源. 

I can tell you that the marking seems to be correct that represents OPA2189ID(R). The part is likely manufactured in 2014, if this is an old equipment or device (then OPA2189's released date is 2017). So this may be a new device - then you should have the current information.  

OPA2189 is an chopper amplifier and you can trace your existing schematic and find out what issues are. You do not need to have the marking definitions to do that. 

 https://www.ti.com/lit/ds/symlink/opa2189.pdf

Best,

Raymond