What does the "&" symbol after the date code mean?
ADM2483
Production
The ADM2483 differential bus transceiver is an integrated,
galvanically isolated component designed for bidirectional data
communication on balanced, multipoint...
Datasheet
ADM2483 on Analog.com
What does the "&" symbol after the date code mean?
Hi!
An ampersand (&) on the physical package denotes the CSA attestation of CTI>600 V and isolation of Material Group I.
You can find this information in the "Insulation and Safety-Related Specifications" section of the ADM2483 datasheet.

Kind Regards,
Andrea