■ 제품필수정보

제조사	STMicroelectronics
제조사품명	ST25R3911B-AQFT
간략설명	STMicroelectronics ST25R3911B-AQFT RF Transceiver, 32-Pin QFN

■ 제품사양

Modulation Technique = AM
패키지 = QFN
핀수 = 32
크기 = 5 x 5 x 0.95mm Length = 5mm Width = 5mm
높이 = 0.95mm Maximum Operating Band 1 Frequency = 13.56 MHz, 27.12MHz Maximum Operating Supply Voltage = 5.5 V
최대 작동 온도 = +125 °C
최소 작동 온도 = -40 °C The ST25R3911B is a highly integrated NFC Initiator / HF Reader IC, including the Analogue front end (AFE) and a highly integrated data framing system. Implementation of standard and custom protocols like MIFARE??Classic is possible using the AFE and implementing framing in the external microcontroller (Stream and Transparent modes). The ST25R3911B is positioned perfectly for the infrastructure side of the NFC system, where users need optimal RF performance and flexibility combined with low power. Thanks to automatic antenna tuning (AAT) technology, the device is optimized for applications with directly driven antennas. The ST25R3911B is alone in the domain of HF reader ICs as it contains two differential low impedance (1 Ohm) antenna drivers. The ST25R3911B includes several features that make it very suited for low power applications. It contains a low power capacitive sensor that can be used to detect the presence of a card without switching on the reader field.