Product Brief AS3910 13.56 MHz RFID Reader IC, ISO-14443 A/B 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 (1.5) 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. 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 consumption from 10mA to 5mA Low power (3.5A) NFC target mode Integrated regulators to boost system PSRR Additionally using this configuration means half of the power consumption at the same output power. AM/PM demodulator to eliminate communication holes 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. Accurate RF envelope measurement (8 bit A/D) For applications where high power is required (EMV) the AS3910 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 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. RSSI measurement High output power at 3.3V power supply: - up to 700mW in case regulator is externally shorted - up to 500mW in case differential output and antenna trimming is used - up to 125mW in case of single ended output and antenna trimming is used Squelch feature which performs gain reduction to compensate for noise generated by transponder processing User selectable and automatic gain control Transparent mode to implement other standard and custom protocols (ISO-15693, Felica, ....) Quartz oscillator capable of operating with 13.56MHz or 27.12MHz crystal with fast start-up Additional A/D converter input, Serial peripheral interface (SPI) with 32 byte FIFO Supply voltage range from 2.4V to 3.6V Wide temperature range: -40C to 85C QFN 32 5x5 package 3 Applications The AS3910 is ideal for applications where the reader antenna is directly driven (no 50 cable). It also includes several unique features, which make it especially suitable for low power and battery powered applications. www.austriamicrosystems.com/HF_RFID_Reader/AS3910 Revision 2.3 1-3 AS3910 Product Brief - A p p l i c a t i o n s Figure 1. AS3910 HF RFID Reader IC Block Diagram XTO XTI Oscillator Regulators Bias Logic Transmitter FIFO FIFO Control Logic SPI A/D Converter RFO1 RFO2 Phase & Amplitude Detector SPI Interface Receiver Framing RFI1 RFI2 External Field Detector AS3910 HF RFID Reader IC Block Diagram www.austriamicrosystems.com/HF_RFID_Reader/AS3910 Revision 2.3 2-3 AS3910 Product Brief - O r d e r i n g I n f o r m a t i o n 4 Ordering Information The devices are available as the standard products shown in Table 1. Table 1. Ordering Information Ordering Code Description Delivery Form Package AS3910-BQFT HF RFID Reader IC Tape & Reel 32-pin QFN (5x5mm) Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: http://www.austriamicrosystems.com/ICdirect For further information and requests, please contact us: RFID@austriamicrosystems.com or find your local distributor at http://www.austriamicrosystems.com/distributor Copyrights Copyright (c) 1997-2010, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered (R). All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 RFID@austriamicrosystems.com For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com/HF_RFID_Reader/AS3910 Revision 2.3 3-3