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ST25R3911B Datasheet High performance HF reader / NFC initiator

Manufacturer: STMicroelectronics

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General Description

The ST25R3911B is a highly integrated NFC Initiator / HF reader IC, including the analog front end (AFE) and a highly integrated data framing system for ISO 18092 (NFCIP-1) initiator, ISO 18092 (NFCIP-1) active target, ISO 14443A and B reader (including high bit rates), ISO 15693 reader and FeliCa™ reader.

Implementation of other 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.

Overview

ST25R3911B Datasheet High performance HF reader / NFC initiator with 1.

Key Features

  • ISO 18092 (NFCIP-1) Active P2P.
  • ISO14443A, ISO14443B, ISO15693 and FeliCa™.
  • Supports VHBR (3.4 Mbit/s PICC to PCD framing, 6.8 Mbit/s AFE and PCD to PICC framing).
  • Capacitive sensing - Wake-up.
  • Automatic antenna tuning system providing tuning of antenna LC tank.
  • Automatic modulation index adjustment.
  • AM and PM demodulator channels with automatic selection.
  • DPO (Dynamic power output).
  • Up to 1.4 W in case of differen.

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