EM4123 - Read-only UHF RFID IC

Product Overview

EM Microelectronic

Part number	EM4123
Manufacturer	EM Microelectronic
File Size	307.10 KB
Description	Read-only UHF RFID IC
Datasheet	EM4123 Datasheet
Additional preview pages of the EM4123 datasheet.

The chip 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.

Factory programmed 64 bit ID number.
High data rate: Up to 256 kbit/s.
Frequency independent: Typically used at 869 MHz, 902 - 960 MHz (versions 001 to 099).
On-chip oscillator.
On-chip rectifier.
Low voltage operation - down to 1.0 V at ambient temperature.
Tag Talk Only protocol (TTO).
Low power consumption.
Low cost.
-40° to +85° C operating temperature range Benefits.
Anti-collision suited to flux monitoring.
Very low consumption.

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Published: Oct 7, 2025 |