MLX74190 Datasheet, PDF (2/14 Pages) Melexis Microelectronic Systems – Two-Fold High Power LF Initiator With integrated Immobilizer

MLX74190
Two-Fold High Power LF Initiator
With integrated Immobilizer
Table of Contents
1 Absolute Maximum Ratings..............................................................................................................................3
2 Range of Functionality......................................................................................................................................3
1 Pin out description ............................................................................................................................................4
2 High Level Block Diagram ................................................................................................................................6
3 Operating Modes ..............................................................................................................................................7
3.1 Sleep Mode................................................................................................................................................7
3.2 Standby Mode............................................................................................................................................7
3.3 Transmission Mode ...................................................................................................................................7
3.4 Diagnosis Mode .........................................................................................................................................7
4 Device Description ...........................................................................................................................................8
4.1 Power supplies, internal regulation and references ..................................................................................8
4.2 System clock..............................................................................................................................................8
4.3 Low Frequency Generation .......................................................................................................................8
4.4 Sine wave generation ................................................................................................................................8
4.5 Square wave generation............................................................................................................................8
4.6 Modulator ...................................................................................................................................................8
4.7 Immobilizer ASK ........................................................................................................................................8
4.8 Immobilizer FSK ........................................................................................................................................9
4.9 Digital SPI Interface ...................................................................................................................................9
4.10 SPI Commands........................................................................................................................................9
4.11 Failure Flags ............................................................................................................................................9
4.12 Antenna diagnosis ...................................................................................................................................9
4.13 Current Measurement..............................................................................................................................9
5 Application Information...................................................................................................................................10
1 Package and marking information..................................................................................................................11
1.1 Package data TQFP eP 48L (7x7, 48 leads)...........................................................................................11
1.2 Marking instruction...................................................................................................................................12
2 Standard information regarding manufacturability of Melexis products with different soldering processes ..13
3 Disclaimer.......................................................................................................................................................14
4 Contact Information ........................................................................................................................................14
390107419001
Rev. 001
Page 2 of 14
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Sept-2014