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MLX90109 датащи(PDF) 2 Page - Melexis Microelectronic Systems

номер детали MLX90109
подробное описание детали  125kHz RFID Transceiver
PDF  16 Pages
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производитель  MELEXIS [Melexis Microelectronic Systems]
домашняя страница  http://www.melexis.com
Logo MELEXIS - Melexis Microelectronic Systems

MLX90109 датащи(HTML) 2 Page - Melexis Microelectronic Systems

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MLX90109
125kHz RFID Transceiver
3901090109
Page 2 of 16
Data Sheet
Rev 011
Jun/12
1 Functional diagram
2 Description
The MLX90109 is a single chip RFID transceiver
for the 125kHz frequency range.
It has been
conceived for minimum system cost and minimum
power consumption, offering all required flexibility
for a state of the art AM transceiver base station.
An external coil (L), and capacitor (C) are
connected as a parallel resonant circuit, that
determines the carrier frequency and the oscillator
frequency of the reader.
This eliminates zero
modulation effects by perfect antenna tuning, and
avoids the need for an external oscillator.
The reader IC can easily be switched to power
down by setting the antenna amplitude to zero.
The MLX90109 can be configured to decode the
transponder signal on-chip.
In this case the
decoded signal is available through a 2-wire
interface with clock and data.
For minimum
interface wiring, the non-decoded transponder
signal can also be made available on a single wire
interface.
VDD
VDD
COIL
MODU
MLX90109
RC modulation
network
microcontroller
(1): MODE/SPEED config settings
(2): DATA/CLOCK outputs



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