Datasheet Summary
EM MICROELECTRONIC
- MARIN SA Preliminary
Read-only UHF Identification Device
Description
The EM4222 is used in passive UHF read-only transponder applications. It is powered up by an RF beam transmitted by the reader, which is received and rectified to generate a supply voltage for the chip. A preprogrammed code is transmitted to the reader by varying the amount of energy that is reflected back to the reader. It implements a robust and fast anti-collision protocol. The chip is frequency independent and is to be used for RF coupled applications. A reading range from 2m to 20m and reading rates up to 120 tags/second can be achieved, depending upon the system configuration. The Tag...