MLX90109EDC Melexis Inc, MLX90109EDC Datasheet - Page 11

• Manufacturer Part Number: MLX90109EDC
• Description: IC RFID TXRX 125KHZ 8-SOIC
• Manufacturer: Melexis Inc
• Series: MLX90109r

Specifications of MLX90109EDC

• Rf Type: Read / Write
• Frequency: 125kHz
• Features: Low Power Consumption
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MLX90109EDCTR

10 Typical configuration: READ/WRITE ON/OFF keying (FDX-B100)
The basic principle is to switch the voltage on MODU between 0V and V
maximum amplitude in less than 3 periods when MODU is stepped down from V
power-down (set V
antenna’s quality factor Q
microcontroller could be used to decrease the fall time (refer to the application note MLX90109 “100%
modulation (ON/OFF Keying)”.
Note : Care should be taken to the capacitor C1 which may reduce the fall time.
3901090109
Rev 008
10.1 Application diagram
MODU
up to V
ant
. For fast protocols, an additional drain resistor on MODU controlled by the
DD
) will let the antenna fade-out with a time constant, depending on the
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125kHz RFID Transceiver
DD
. The antenna will reach its
DD
MLX90109
to V
SS
. Setting the chip in
Data Sheet
Jun/06