AK9752 AK9752 2 Ultra-small IR Sensor IC with I C I/F 1. General Description The AK9752 is a very low power and ultra-small infrared-ray (IR) sensor module. It is composed of a quantum IR sensor and an integrated circuit (IC) for signal processing. The IR sensors offset variation is calibrated at shipment. An integral analog-to-digital converter provides 16-bits data outputs. The AK9752 is applied for detecting human presence. 2. Features Quantum-type IR sensor 2 Integrated Temperature sensor: -30 ~ 85C output on I C bus 2 16-bits Digital outputs to I C bus Integrated Digital filter: IR sensor: Cut-off frequency 2.5Hz, 0.9Hz, 0.45Hz Temperature sensor: Cut-off frequency 2.5Hz, 0.9Hz, 0.45Hz, 0.22Hz 2 I C interface: Standard mode (100kHz) supported in case of external pull-up voltage VDD ~ 3.63V Fast mode (400kHz) supported in case of external pull-up voltage VDD ~ 1.95V Interrupt Function INTN pin can be used as a read-trigger or an interrupt request of signal level monitoring. Low Voltage Operation: 1.65 ~ 1.95V Low Current Consumption: 100A (Max.) in case of 10Hz output (Continuous mode) 10A (Typ.) in case of 1Hz output (Single shot mode) Ultra-small and Thin Package: 6-pin SON 2.2mm x 2.2mm x t0.6mm 016016473-E-00 2017/1 - 1 - AK9752 3. Table of Contents 1. General Description ............................................................................................................................ 1 2. Features .............................................................................................................................................. 1 3. Table of Contents ................................................................................................................................ 2 4. Block Diagram and Functions ............................................................................................................. 4 4.1. Block Diagram .............................................................................................................................. 4 4.2. Functions ..................................................................................................................................... 4 5. Pin Configurations and Functions ....................................................................................................... 5 5.1. Pin Configurations ....................................................................................................................... 5 5.2. Functions ..................................................................................................................................... 5 6. Absolute Maximum Ratings ................................................................................................................ 6 7. Recommended Operating Conditions ................................................................................................. 6 8. Power Supply Conditions .................................................................................................................... 6 9. Electrical Characteristics ..................................................................................................................... 7 9.1. Analog Characteristics ................................................................................................................. 7 9.2. Digital Characteristics .................................................................................................................. 7 9.2.1. DC Characteristics ................................................................................................................ 7 9.2.2. AC Characteristics (1): Standard Mode (100 kHz) ............................................................... 8 9.2.3. AC Characteristics (2): Fast Mode (400 kHz) ...................................................................... 8 9.2.4. AC Characteristics (3): INTN ................................................................................................ 9 10. Functional Descriptions ................................................................................................................. 10 10.1. Power Supply States .............................................................................................................. 10 10.2. Reset functions ...................................................................................................................... 10 10.3. Operating Mode ..................................................................................................................... 10 10.4. Descriptions for each Operating Mode ................................................................................... 11 10.4.1. Stand-by Mode (MODE 1:0 = 00) ............................................................................... 11 10.4.2. Continuous Mode (MODE 1:0 = 01) ............................................................................ 11 10.4.3. Single Shot Mode (MODE 1:0 = 10) ........................................................................... 11 10.5. Read Measurement Data ....................................................................................................... 12 10.5.1. Normal Read-out Procedure ........................................................................................... 12 10.5.2. Read-out Data during a measurement Period ................................................................ 13 10.5.3. Skipping Data .................................................................................................................. 13 10.5.4. End Operation ................................................................................................................. 14 10.5.5. Example of Read-out Procedure .................................................................................... 14 11. Serial Interface .............................................................................................................................. 16 11.1. Data Transfer.......................................................................................................................... 16 11.1.1. Changing state of the SDA line .......................................................................................... 16 11.1.2. Start / Stop Conditions ....................................................................................................... 16 11.1.3. Acknowledge ...................................................................................................................... 17 11.1.4. Slave Address ..................................................................................................................... 18 11.1.5. Write Command .................................................................................................................. 18 11.1.6. Read Command ................................................................................................................. 19 12. Memory Map .................................................................................................................................. 20 13. Registers Functional Descriptions ................................................................................................. 21 14. Spectrum Sensitivity (Reference) .................................................................................................. 29 15. Field of View (Reference) .............................................................................................................. 30 16. IR sensor output (Reference) ........................................................................................................ 31 17. Recommended External Circuits ................................................................................................... 32 18. Package ......................................................................................................................................... 33 18.1. Outline Dimensions ..................................................................................................................... 33 18.2. Pad dimensions ........................................................................................................................... 34 18.3. Marking ........................................................................................................................................ 35 19. Ordering Guide .............................................................................................................................. 35 016016473-E-00 2017/1 - 2 -