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AS3910

Part Number	AS3910
Manufacturer	austriamicrosystems AG
Description	13.56 MHz RFID Reader
Published	Mar 14, 2010
Detailed Description	Data Sheet AS3910 13.56 MHz RFID Reader IC, ISO-14443 A/B www.DataSheet4U.com 1 General Description The AS3910 is a hi...
Datasheet	AS3910 PDF File

Overview

Data Sheet AS3910 13.
56 MHz RFID Reader IC, ISO-14443 A/B www.
DataSheet4U.
com 1 General Description The AS3910 is a high performance 13.
56MHz HF RFID Reader IC.
With austriamicrosystems’ unique antenna management technology it is optimized for applications with directly driven antennas.
The AS3910 is unequalled in the domain of HF Reader ICs in that it contains two differential low impedance (1.
5Ω) antenna drivers.
These drivers are unmatched meaning the IC can deliver up to 8 times the output power of a standard HF Reader IC using the same power supply voltage.
Additionally using this configuration means half of the power consumption at the same output power.
The IC has an operating voltage down to 2.
4V and a low power operating mode of 5mA.
This means the AS3910 is ideal for portable or battery powered applications.
For applications where high power is required (EMV) the AS3910 can attain up to 1W.
This means there is no need for complex external booster circuitry.
The component count and complexity of the design is further reduced through the patented automatic modulation depth adjustment.
The analog front end (AFE) is complimented by a highly integrated data framing engine for both ISO-14443 A and B.
This includes data rates up to 848kbits with all framing and synchronization tasks on board.
This enables the customer to build a complete HF RFID Reader using only a low end micro.
The AS3910 not only supports reader to tag communication, but sports Peer to Peer communication using the NFCIP-1 active communication mode with a data rate of 106kbps.
The IC has a SPI, which enables bi-directional communication with the external microcontroller.
Other standard and custom protocols, such as ISO-15693 can be implemented via transparent mode.
2 Key Features Close loop adjustment of ASK modulation for accurate control of modulation depth in case of ISO-14443B protocol Antenna trimming system providing correction range of LC Low power operating mode reduces receiver cons...

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