U2270B Просмотр технического описания (PDF) - Atmel Corporation

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U2270B

Read/Write Base Station

Atmel Corporation 

Figure 1-1. System Block Diagram

Transponder/TAG

Transponder

IC

RF field

typ. 125 kHz

Figure 1-2. Block Diagram

DVS VEXT

Read/write base station

Osc

U2270B

NF read channel

Carrier

enable

Data

output

MCU

Unlock

System

VS

VBatt

COIL1

Power supply

=1

COIL2

DGND

Driver

Input

Lowpass filter

Amplifier

HIPASS

&

Oscillator

&

Schmitt trigger

GND

OE

Standby

Frequency

adjustment

MS

CFE

RF

Output

2 U2270B

4684E–RFID–02/08

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