Compact dynamic device offers standalone NFC passive tag functionality

Mouser now stocks the ams AS3955 NFC Dynamic Tag IC which offers standalone near field communication (NFC) passive tag functionality in a small footprint. A high-sensitivity ISO14443A front end and integrated resonance capacitor make the AS3955 an ideal solution for adding NFC functionality to electronic devices. Fast system integration and high speed data transfer are 'guaranteed' by The SPI and I²C interfaces and by the optimized protocols (tunneling mode and extended mode), says the company. It allows for bidirectional communication between the device microcontroller and an external NFC compliant device or an ISO14443A reader device. It is also fully powered by the RF field without an external supply. This dynamic tag also features an advanced energy harvesting feature for increased battery life or battery-less designs, as well as supporting ISO 14443A up to Level 4. The device is designed according to EMVCo requirements, enabling the emulation of contactless smart cards or NFC Forum compliant Type 2 or Type 4 tags. The AS3955 is designed for high reliability and can operate in a wide power supply range (1.65V to 5.5V) and in a wide temperature range (-40C to +125C). The device's EEPROM memory reaches automotive grade quality with endurance of 100,000 cycles and data retention of ten years at 125C, says the company.