EM4205
Description
EM4205/4305 is a CMOS integrated circuit intended for use in electronic Read/Write RF transponders. It is suitable for low cost solutions like animal tagging applications. The IC munication protocol is patible with the EM4469/4569 family.
The main difference between the EM4205 and EM4305 is that:
EM4305 are bumped with enlarged pads for the two coil inputs. The enlarged bumped pads of the EM4305 transponder are intended for direct antenna connection avoiding the need of a module.
EM4305 offers a 330p F resonant capacitor version
The IC is powered by picking up energy from a continuous 125 k Hz magnetic field via an external coil, which together with the integrated capacitor form a resonant circuit. The IC reads out data from its internal EEPROM and sends it out by switching on and off a resistive load in parallel to the coil using a large modulation index. mands and EEPROM data updates can be executed by 100% AM modulation of the 125 k Hz magnetic field.
The EM4205/4305...
