MLX90109 데이터 시트보기 (PDF) - Melexis Microelectronic Systems

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MLX90109

125kHz RFID Transceiver

Melexis Microelectronic Systems  

MLX90109

125kHz RFID Transceiver

Contents

Features and Benefits................................................................................................................................ 1

Applications Examples............................................................................................................................... 1

Ordering Code ........................................................................................................................................... 1

1. Functional diagram................................................................................................................................ 2

2. Description ............................................................................................................................................ 2

3. Maximum ratings................................................................................................................................... 5

4. Pad definitions and descriptions............................................................................................................ 5

5. MLX90109 Electrical Specifications........................................................................................................ 6

6. Block Diagram........................................................................................................................................ 7

7. General Description............................................................................................................................... 7

7.1. Loop Gain Oscillator............................................................................................................................7

7.2. Peak Detector......................................................................................................................................7

7.3. Band-Pass Filter...................................................................................................................................7

7.4. Digital demodulator ............................................................................................................................ 8

7.5. Antenna voltage definition.................................................................................................................8

7.6. Power Down mode ............................................................................................................................. 8

7.7. Write operation .................................................................................................................................. 8

8. System design parameters..................................................................................................................... 9

8.1. Auto start-up condition ......................................................................................................................9

8.2. Antenna current..................................................................................................................................9

8.3. Antenna Impedance .........................................................................................................................10

9. Typical configuration: READ ONLY ....................................................................................................... 11

9.1. Application diagram..........................................................................................................................11

9.2. Absolute minimum schematic..........................................................................................................11

9.3. Power consumption..........................................................................................................................11

9.4. Noise cancellation.............................................................................................................................12

9.5. Integrated decoding .........................................................................................................................12

9.6. Close coupling ...................................................................................................................................12

10. Typical configuration: READ/WRITE ON/OFF keying (FDX-B100)........................................................ 13

10.1. Application diagram........................................................................................................................13

11. Standard information regarding manufacturability of Melexis products with different soldering

processes............................................................................................................................................ 14

12. ESD Precautions................................................................................................................................. 14

REVISION 011 - JUNE 19, 2017

3901090109

Page 3 of 17

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