- Contact Person : Mr. MAO JOE
- Company Name : Shenzhen Smart Way Technology Co., Ltd.
- Tel : 86-755-83559943,13632796112
- Fax : 86-755-83005967
- Address : Guangdong,SHENZHEN,Room 28A12, Harbin building. No.7045 Beihuan Rd, Futian District, Shenzhen, China.
- Country/Region : China
- Zip : 518034
125KHZ 4100 chips
SMW4100 is a CMOS integrated circuit for use in transponders. the circuit is powered by an extemal coil placed in a magnetic field and getsit clock from the same field via one of the coil terminals. the other coil terminal is affected by the modulator turning on and off the modulation current in order to send back 64 bits of information contained in a facory per-programmed memory array.
the programming of the chips is perfomed by electrical fusing of polysilicon links in order to store a unique code on each chip.
the serial output data string contains a 9 bits header, 40 bits of data. 14 parity bits and 1 stop bit.
Due to a low power consumption of the logic core, no supply buffer capacitor is required. Only an external coil is required to obtain the chip function. A parallel capacitor adjusted with the coil to obtain resonance will increase the read distance.
