AS3911 datasheet(2/149 Pages) AMSCO

2 / 149 page

AS3911 – 2

ams Datasheet, Confidential: 2013-Oct [2-03]

G e n e ral D e sc rip t ion

Key Benefits & Features

The benefits and features of AS3911, NFC Initiator / HF Reader

IC are listed below:

Figure 1:

Added Value for AS3911

Benefits

Features

NFC Active P2P support

ISO 18092 (NFCIP-1) Active P2P

ISO14443 A, B and FeliCa (TM)

High data transfer with ASK VHBR and fast

SPI

Support of VHBR (3.4 Mbit/s PICC to PCD framing, 6.8 Mbit/s AFE

and PCD to PICC framing)

μA consumption at sensing every 100ms

Capacitive sensing - Wake-up

Antenna tuning on the fly

Automatic Antenna Tuning system providing tuning of antenna

LC tank

Stable modulation index at ASK modulation

Automatic modulation index adjustment

No communication holes

AM and PM (I/Q) demodulator channels with automatic

selection

High output power for EMVCo readers

Up to 1 W in case of differential output

High Rx sensitivity

User selectable and automatic gain control

Allows implementation of custom framings

Transparent and Stream modes to implement other standard

and custom protocols

Multi Antenna support

Possibility of driving two antennas in single ended mode

Smaller Oscillator size

Oscillator input capable of operating with 13.56 MHz or 27.12

MHz crystal with fast start-up

Easy FIFO handling

10 M bit SPI with 96 bytes FIFO

Wide supply voltage range from 2.4 V to 5.5 V

Fits Temperature requirements for various

applications

Wide temperature range: -40°C to 125°C

Small outline, good cooling through

exposed pad

QFN 5x5 LD32 package

AS3911 数据表(PDF) 2 Page - ams AG

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