Datasheet

austriamicrosystems AG
is now
ams AG
The technical content of this austriamicrosystems application note is still valid.
Contact information:
Headquarters:
ams AG
Tobelbaderstrasse 30
8141 Unterpremstaetten, Austria
Tel: +43 (0) 3136 500 0
e-Mail: [email protected]
Please visit our website at www.ams.com
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Product Brief
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The AS399x “MICRO” Demo Kit & Reference Design
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General Description
Key Features
Applications
Schematics & Dimensions
Contact
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Contents
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Rev. 1.3
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General Description
The MICRO UHF RFID Reader reference design from austriamicrosystems is a Low Cost EPC Class 1 Gen 2
compliant UHF RFID Reader system. Leveraging the AS399x family of UHF RFID Reader IC’s, provides
close to the industries lowest BOM cost, best in class power consumption with the least amount of complexity.
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Second only to austriamicrosystems PICO design the low reader BOM enables UHF RFID markets that have
previously been out of reach due to cost restraints. With regards to overall cost vs performance the MICRO
UHF RFID reference design is unmatched in the industry.
With an external PA delivering up to 23 dBm, it is ideally suited for those applications that have similar cost
constraints but require that extra power.
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The MICRO reference design comes in two parts namly the analogue (RF) and digital (controller) parts. The
user can separate the two boards to fully prove out their own RF and digital parts. With this set up it also
means the user can evaluate the suitability of RFID in their current system.
The RF portion is designed such that it can be easily connected to a host micro via SPI. The high level of
integration found on the AS399x UHF RFID Reader IC’s allows for minimal code loading and quick
implementation.
The reference designs come with free, fully portable code and all gerbers and schematics. This allows for a
quick, trouble free design in.
You no longer have to be a RFID expert to implement RFID.
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Interface
o Between the Controller and Host Computer is USB
o Between the Controller and the AS399x is SPI via a low cost pinheader connection
o Between the RF board and the Antenna we use a U.FL (50 Ohm) SMA (Male)
5V power supply from USB.
GUI
o Adjust Output Power
o Adjust Receive – Sensitivity
o Adept to different frequency schemes
o Change Gen2 specific parameters like BLF, Coding, Session Flags, …
o Diagnostic Features: RSSI Measurement, Reflected Power Measurement
o Support for sending direct commands
o Advanced Tag Manipulations: R/W to different memory banks, define passwords
o Associate tags with other applications like media player
o View and easily manipulate register settings with advance tool tip text.
Power Consumption: complete reader system is only 600mW (typ), 1.08W (max)
Comes with both the AS3991 and AS3992
Fully Gen 2 compliant, ISO 18000-6b & c
Differential Tx chip-output configuration
External power amplifier RF2172
Maximum output power 22.5 dBm scalable in 20 steps
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Key Features
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Single – ended Rx chip-input configuration
Low cost MCU: Silabs (C8051F340-GQ)
Indicator LED
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Applications
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Schematics and Dimensions
RF Board
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Dimensions 26.85mm x 20.83mm
4 layer PCB
Dual side component placement
PCB thickness – 1.85mm
Controller Board
Dimensions 26.85mm x 20.83mm
2 layer PCB
Component placement on single side
PCB thickness – 1.7mm
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Embedded Consumer Applications
Mobile Applications (Low Power Handheld, PDA’s, Smart Phones)
Embedded Industrial Applications
Gaming
Desk top readers
Low/Mid powered modules
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Typical applications for the MICRO reference design include;
Fig 1
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Fig 2
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www.austriamicrosystems.com
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Contact
Mark Dickson – Marketing Manager RFID
Phone +43 3136 500 5916
Fax
+43 3136 500 5692
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[email protected]
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