gen2 reader ic with drm tolerance against self jammer operation down to 2.7v current consumption 80ma small package qfn-48 7x7 save power ? not functionality AS3993
www.austriamicrosystems.com products@austriamicrosystems.com ? 03/2011 by austriamicrosystems ag subject to change without notice headquarters austriamicrosystems ag tobelbader strasse 30, 8141 unterpremstaetten, austria phone +43 3136 500-0 fax +43 3136 525-01 sales offices worldwide europe: france, germany, italy, switzerland, united kingdom, finland, sweden | north america: usa ca, usa nc | asia: hong kong, china, japan, korea, singapore, taiwan general description the AS3993 uhf reader chip is the next generation integrated analog front end and protocol handling system for a 900mhz rfid reader system from aus- triamicrosystems. it is a completely new architecture from the as3992 and is optimized for low voltage, low power applications down to 2.7v. the AS3993 now delivers uhf epc gen 2 in a small qfn48 7x7 or ? ip chip, while retaining the ? exibility, integration and simplicity of the previous generations. combined with the low power operation makes it ideal for embedded or mobile applications. the AS3993 retains the -86dbm sensitivity of the as3992, including self jamming robustness against antenna re? ections. this is critical for mobile or em- bedded applications, where the antenna design is challenged and the additional sensitivity / robustness is needed. the internal pa has been optimized further, which will now deliver up to 20dbm even under challeng- ing conditions. it continues to support operation on the drm link frequencies used in etsi and fcc regions. it complies with epc class 1 generation 2 protocol (iso 18000-6c) and iso 18000-6a/b (in direct mode). the reader con? guration is achieved by selecting the de- sired protocol settings in the control registers. direct access to all control registers also allows ? ne-tuning of different reader parameters. key features - iso18000-6c (epc gen2) full protocol support - iso18000-6a,b compatibility in transparent mode - 3.3v supply voltage (2.7v to 3.6v) - filters dedicated to 250khz and 320khz m4 and m8 drm operation - support of iso29143 (air interface for mobile rfid interrogators) - antenna driver using ask or pr-ask modulation - am & pm demodulation eliminating communication holes through automatic i/q selection - on-board vco and pll covering complete rfid frequency range from 840mhz to 960mhz - signi? cant increase of psrr through on-chip rf output supply regulators - power-down, standby and active mode - frequency hopping support - integrated low level transmission coding - integrated low level decoders - integrated data framing - integrated crc checking - 4 pin spi interface to mcu using 24 bytes fifo - selectable clock output for mcu - large peripheral communication supply range from 1.65v to 5.5v - integrated regulators with automatic setting to boost system psrr - internal power ampli? er ( dbm) for short range applications - adjustable ask modulation index - selectable reception gain - reception automatic gain control - oscillator using 20mhz crystal - wide temperature range: -40oc to 85oc - 48-pin qfn (7x7mm) package applications the device is ideal for embedded consumer/industrial applications with cost constraints like beverage dis- pensing. additionally, as3990 is well positioned for the growing uhf mobile market. www.austriamicrosystems.com/AS3993 epc ge n 2 p r otocol handlin g su p p l y r e g u l a t o rs & r e f e r e n c e s mcu int e rfac e as 3993 uhf r fi d r eader i c b lock d iagra m direction a l un i t micro co ntroller r ss i d i g i t i ze r d i g i t i ze r ga i n r f o u t 2 4 by t e fifo d i gi t al p r o c e s sor a n d epc gen2 p r otoco l h and l in g c rc g e n - 2 frame ge n d r m fi lt e r i / q m ix e r bl ockin g c apac i t o r an a l og fr o nt en d oscilla t o r & timin g s yst em
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