AS3909 データシートの表示（PDF） - austriamicrosystems AG
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AS3909 Datasheet PDF : 77 Pages
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General Description
Applications
The AS3909/10 is ideal for applications where the reader
antenna is directly driven (no 50Ω cable). It also includes several
unique features, which make it especially suitable for low power
and battery powered applications.
Block Diagram
The functional blocks of this device for reference are
shown below:
Figure 3:
AS3909/10 HF RFID Reader IC Block Diagram
XTO XTI
Oscillator
Regulators
Bias
Logic
FFIIFFOO
Transmitter
Control Logic
Phase &
SPI
A/D Converter
Amplitude
Detector
SPI Interface
Framing
Receiver
RFO1
RFO2
RFI1
RFI2
External Field
Detector
AS3909/10 HF RFID Reader IC Block Diagram
Note: The main differences between AS3909 and AS3910 are elaborated in sections General Description, Pin Assignments, Detailed
Description, Direct Commands, Clear and Active Receive – Use in ISO-14443B Anticollision.
ams Datasheet, Confidential: 2013-Oct [3-02]
AS3909/AS3910 – 3
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