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AS3909 NFC/HF Reader

High Performance HF Reader

The AS3909 is a high performance HF Reader IC ideal for challenging applications. Unique features include high output power of 700mW and transparent mode to implement other standard and custom protocols.

Diagram of the AS3909 NFC/HF Reader

Key Features

  • Up to 700mW of output power
  • Automatic modulation depth adjustment
  • Transparent mode to implement custom protocol

Key Features

  • No external Booster circuit required, less BOM
  • Interoperability with ISO14443B
  • Allows to implement proprietary protocols

AS3909 Applications

The AS3909 is used for proximity applications where the antenna is directly driven. The IC is optimized for battery powered or portable applications.

AS3909 Product Facts

Protocols supported / Standard [ ] ISO 14443A/B
ISO 15693 (transparent mode)
NFCIP-1 (106 kbps)
Frequency [ MHz] 13.56
Antenna management [ ]
Wakeup [ ]
Closed loop modulation depth adjustment
Max. output power [mW] 700
Datarate [kbps] up to 848
Supply voltage [V] 2.4 - 3.6
Temperature range [°C] -40 to +125
Package TQFN-32 (5x5)
ISM Range [MHz]
TX Modulation
Sensitivity [dBm]
Output Power [dBm]
Link Frequencies Supported [kHz]
Coding [V]