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AS3910

Part Number	AS3910
Manufacturer	ams
Description	13.56 MHz RFID Reader
Published	Feb 18, 2015
Detailed Description	General Description AS3909/AS3910 13.56 MHz RFID Reader IC, ISO-14443 A/B The AS3909/10 is a high performance 13.56MHz ...
Datasheet	AS3910 PDF File

Overview

General Description AS3909/AS3910 13.
56 MHz RFID Reader IC, ISO-14443 A/B The AS3909/10 is a high performance 13.
56MHz HF RFID Reader IC.
The AS3909/10 is unequalled in the domain of HF Reader ICs; it contains two differential low impedance (1.
5Ω) antenna drivers.
These drivers are unmatched, which means that 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 AS3909/10 is ideal for portable or battery powered applications.
For applications where high power is required the AS3909/10 can attain up to 700mW.
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 complemented 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 AS3909/10 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 or Felica can be implemented via transparent mode.
Only available in AS3910: In addition to the above mentioned advantages, AS3910 also features the ams' unique Automatic Antenna Tuning (AAT)1 technology.
With AAT, the device is optimized for application with directly driven antenna and enables the reader to retune itself to deliver maximum output at 13.
56MHz, when the surroundings detunes the antenna.
For ...

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