AS3909 datasheet(3/77 Pages) AMSCO

3 / 77 page

ams Datasheet, Confidential: 2013-Oct [3-02]

AS3909/AS3910 – 3

General Des c ripti o n

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

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.

Logic

XTO

XTI

RFO1

RFO2

RFI1

RFI2

SPI

FIFO

Bias

Transmitter

A/D Converter

Receiver

External Field

Detector

Regulators

FIFO

Control Logic

SPI Interface

Framing

Phase &

Amplitude

Detector

Oscillator

AS3909/10 HF RFID Reader IC Block Diagram

AS3909 数据表(PDF) 3 Page - ams AG

AS3909 数据表(HTML) 3 Page - ams AG

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