AS3993-DK FERMI ams, AS3993-DK FERMI Datasheet - Page 2

• Manufacturer Part Number: AS3993-DK FERMI
• Description: RFID Transponder Tools AS3993 Demo Board Fermi
• Manufacturer: ams

Specifications of AS3993-DK FERMI

• Rohs: yes
• Product: RFID Readers
• Description/function: Demonstration Reader
• Frequency: 20 MHz
• Interface Type: SPI, USB
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 5 V
• Tool Is For Evaluation Of: AS3993
• For Use With: AS3993 UHF RFID Reader IC

AS3993 – AN13 – Received Signal Strength Indicator (RSSI)
Table of Contents
1.
2.
3.
4.
5
6
7
Copyright .................................................................................................................................. 17
Disclaimer ................................................................................................................................. 17
Figure 1 - Reader Part ......................................................................................................................... 5
Figure 2 - Controller Part ..................................................................................................................... 6
Figure 3 - Pin Header Position (all dimensions in mm) ....................................................................... 8
Figure 4 - Programming Interface (all dimensions in mm) .................................................................. 9
Figure 5 - RF Tracks - Impedance Calculation (dimensions in mil) .................................................. 10
Figure 6 - RF Part - PCB Stackup ..................................................................................................... 10
Figure 7 - Schematic Reader Section ............................................................................................... 11
Figure 8 - Schematic Loop Filter ....................................................................................................... 11
Figure 9 - Reader Indicator LEDs ...................................................................................................... 12
Figure 10 - Schematic Balun Section ................................................................................................ 13
Figure 11 - Schematic PA Section .................................................................................................... 14
Figure 12 - Schematic Directional Coupler........................................................................................ 15
Figure 13 - OAD Pads ....................................................................................................................... 16
Figure 14 - Schematic MCU Section ................................................................................................. 16
www.ams.com
Introduction .......................................................................................................................... 2
Key Features ....................................................................................................................... 3
Applications ......................................................................................................................... 4
Reader System Description .................................................................................................. 5
Interfaces ............................................................................................................................. 7
Reader Part ....................................................................................................................... 10
Controller Part .................................................................................................................... 16
5.1
5.2
5.3
5.4
6.1
6.2
6.3
6.4
USB .......................................................................................................................... 7
UART Interface ......................................................................................................... 7
Pin Header Interface Description .............................................................................. 8
Programming Interface Description........................................................................... 9
RF Tracks – Impedance Calculation ....................................................................... 10
Reader Part – PCB Stackup ................................................................................... 10
Reader Part – Schematics ...................................................................................... 11
OAD Pins ............................................................................................................... 16
Revision 2.0 / 6/22/12
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