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MLX75031 Datasheet(PDF) 2 Page - Melexis Microelectronic Systems |
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MLX75031 Datasheet(HTML) 2 Page - Melexis Microelectronic Systems |
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2 / 67 page  MLX75031 Optical Gesture & Proximity Sensing IC with Integrated LED Drivers Datasheet REVISION 001 – JANUARY, 2013 Page 2 of 2 39010xxxxx Table of Contents Features & Benefits Features & Benefits Features & Benefits Features & Benefits................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ .................................... .... .... .... 1 1 1 1 Applications Applications Applications Applications ................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ............................................... ............... ............... ............... 1 1 1 1 Functional Diagram Functional Diagram Functional Diagram Functional Diagram................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ .................................... .... .... .... 1 1 1 1 Ordering Information Ordering Information Ordering Information Ordering Information................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ .................................... 1 1 1 1 General Description General Description General Description General Description ................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................... ... ... ... 1 1 1 1 Table of Contents Table of Contents Table of Contents Table of Contents................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ....................................... ....... ....... ....... 2 2 2 2 1. Functional Block Diagram 1. Functional Block Diagram 1. Functional Block Diagram 1. Functional Block Diagram................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ....................................................... ....................... ....................... ....................... 4 4 4 4 2. Device Overview 2. Device Overview 2. Device Overview 2. Device Overview ................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ .................................... .... .... .... 4 4 4 4 3. Glossary of Terms 3. Glossary of Terms 3. Glossary of Terms 3. Glossary of Terms................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................... ... ... ... 5 5 5 5 4. Absolute Maximum Ratings 4. Absolute Maximum Ratings 4. Absolute Maximum Ratings 4. Absolute Maximum Ratings................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ .................................................... .................... .................... .................... 6 6 6 6 5. Pin Definitions & Descriptions 5. Pin Definitions & Descriptions 5. Pin Definitions & Descriptions 5. Pin Definitions & Descriptions ................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................................ ................ ................ ................ 7 7 7 7 6. General Electrical Specifications 6. General Electrical Specifications 6. General Electrical Specifications 6. General Electrical Specifications................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ............................................. ............. ............. ............. 9 9 9 9 7. Sensor Interface Specific Specifications 7. Sensor Interface Specific Specifications 7. Sensor Interface Specific Specifications 7. Sensor Interface Specific Specifications................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ................................ 10 10 10 10 8. Detailed General Description 8. Detailed General Description 8. Detailed General Description 8. Detailed General Description ................................ ................................ ................................ ................................................................ ................................ ................................ ................................................................ ................................ ................................ ............................................... ............... ............... ............... 15 15 15 15 8.1 Active Light Channels A & B......................................................................................................................................................15 8.1.1 Transimpedance Amplifier (TIA) ................................................................................................ 15 8.1.2 Active Light Channel DC Light Measurement....................................................................... 16 8.2 Ambient Light Sensor ................................................................................................................... 17 8.2.1 Normal Operation.................................................................................................................. 17 8.2.2 Logarithmic Transfer Function .............................................................................................. 17 8.2.3 Calibration & Temperaure Compensaion............................................................................. 18 8.2.4 Response Time....................................................................................................................... 19 8.2.5 Diagnostics Mode Operation ................................................................................................ 20 8.3 Temperature Sensor .................................................................................................................... 21 8.4 Analog to Digital Conversion........................................................................................................ 22 8.5 Output Stage................................................................................................................................. 22 8.5.1 DAC ......................................................................................................................................... 22 8.5.2 LED Driver............................................................................................................................... 23 8.5.3 LED Forward Voltage Measurement..................................................................................... 23 8.5.4 Battery Supply Voltage Measurement & Monitoring .......................................................... 24 8.6 Power-On Reset............................................................................................................................ 25 8.7 Oscillator (RC) ............................................................................................................................... 25 8.8 ADC MUX ...................................................................................................................................... 25 8.9 Vstab Analog +Bandgap ............................................................................................................... 26 8.10 Digital Control............................................................................................................................. 26 8.11 SPI................................................................................................................................................ 26 |
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