User's Manual

Technical Data
DC Electrical Characteristics
Symbol Parameter Condition Min Typ Max Units
Vdd Supply Voltage 4.75 5 5.25 VDC
Idd Supply current 250 mA
Idd1 Peak Supply current Inrush 450 mA
Additional requirements for the supply voltage: Vripple = 50mVpp max.
RF Characteristics
Operating frequency: 125kHz
Data transmission modulation reader to card: ASK/PSK
Data transmission modulation card to reader: ASK and PSK
Pinout 4-Pin USB-A plug and Signal Descriptions
Pin Name Type Description
1 PWR Power 5V Power Supply
2 D - Output USB-data inverted
3 D + Input USB-data
4 GND Power Signal and Power Ground
Temperature
Operating temperature range: 0…45°C
Storage temperature range: -20…+60°C
Thermal shock: 30°C/min maximum dT/dt
Humidity
Operating: 20% to 80% relative humidity; non condensing
Non-operating: 10% to 90% relative humidity; non condensing
FCC:
Any changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
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