Sensor IC. AK9750 Datasheet

AK9750 Datasheet PDF


Part Number

AK9750

Description

IR Sensor IC

Manufacture

AKM

Total Page 30 Pages
Datasheet
Download AK9750 Datasheet


AK9750
[AK9750]
AK9750
IR Sensor IC with I2C I/F
1. General Description
The AK9750 is an ultra-low power and compact infrared-ray (IR) sensor module. It is composed of four
quantum IR sensors and an integrated circuit (IC) for characteristic compensation. The four IR sensors’
offset and gain variations are calibrated at shipment. An integral analog-to-digital converter provides
16-bits data outputs. Additional integrated features include a field of view limiter and an optical filter. The
AK9750 is suitable for applications including stationary human detection.
2. Features
Quantum-type IR Sensor with Four IR Elements
16-bits Digital Outputs to I2C bus
Integrated temperature sensor:
-10 ~ 60ºC output on I2C bus
Interrupt Function
INT pin can be used as a read-trigger or an interrupt request of signal level monitoring.
Built in Switch Mode (Standalone Mode)
By writing the threshold into the internal EEPROM at the customers production testing, the
presence detection state will be output to the INT pin. In this mode, neither the control by I2C bus
nor Host MCU is necessary.
Low Voltage Operation:
VDD: 1.71 ~ 3.63V
DVDD: 1.65V ~ VDD
Low Current Consumption:
Max. 100 µA (@Continuous Mode “0)
Max. 1µA (@ Power down Mode)
Small and Thin Package:
10-pin SON
Built in a field of view limiter and an optical filter
015002896-E-01
-1-
2015/10

AK9750
[AK9750]
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. Block Functions............................................................................................................................ 4
5. Pin Configurations and Functions....................................................................................................... 5
5.1. Pin Configurations ....................................................................................................................... 5
5.2. Pin Functions ............................................................................................................................... 5
6. IR Sensors Configuration / Observable Area...................................................................................... 6
6.1. IR Sensor’s Configurations.......................................................................................................... 6
6.2. IR Sensor’s Observable Area ...................................................................................................... 6
7. Absolute Maximum Ratings ................................................................................................................ 7
8. Recommended Operating Conditions................................................................................................. 7
9. Power Supply Conditions.................................................................................................................... 8
10. Electrical Characteristics ................................................................................................................. 9
10.1. Analog Characteristics ............................................................................................................. 9
10.2. Digital Characteristics ............................................................................................................ 10
10.2.1. EEPROM......................................................................................................................... 10
10.2.2. DC Characteristics .......................................................................................................... 10
10.2.3. AC Characteristics (1): Standard Mode (100 kHz) ..........................................................11
10.2.4. AC Characteristics (2): Fast Mode (400 kHz)..................................................................11
11. Functional Descriptions ................................................................................................................. 13
11.1 Power Supply States ................................................................................................................. 13
11.2 Reset functions .......................................................................................................................... 13
11.3 Operating Mode ......................................................................................................................... 14
11.3.1. Normal Mode/Switch Mode ................................................................................................ 14
11.3.2. Normal Mode ...................................................................................................................... 15
11.3.3. Switch Mode ....................................................................................................................... 16
11.4 Descriptions for each Operating Mode...................................................................................... 17
11.4.1. Power down Mode (PDN pin= “L”) ..................................................................................... 17
11.4.2. Stand-by Mode (EMODE [2:0] = “000”).............................................................................. 17
11.4.3. EEPROM Access Mode (EMODE [2:0] = “001” and EEPMODE= “1”) .............................. 17
11.4.4. Single Shot Mode (EMODE [2:0] = “010”).......................................................................... 17
11.4.5. Continuous Mode 0 (EMODE [2:0] = “100”)....................................................................... 18
11.4.6. Continuous Mode 1,2,3 (EMODE [2:0] = “101”, “110”, “111”) ............................................ 18
11.5 Read Measurement Data........................................................................................................... 19
11.5.1. Normal Read-out Procedure .............................................................................................. 19
11.5.2. Read-out Data within a measurement Period .................................................................... 20
11.5.3. Skipping Data ..................................................................................................................... 20
11.5.4. End Operation .................................................................................................................... 21
11.5.5. Example of Read-out Procedure........................................................................................ 21
12. Serial Interface .............................................................................................................................. 23
12.1. Data Transfer.......................................................................................................................... 23
12.1.1. Changing state of the SDA line....................................................................................... 23
12.1.2. Start / Stop Conditions.................................................................................................... 23
12.1.3. Acknowledge................................................................................................................... 24
12.1.4. Slave Address ................................................................................................................. 25
12.1.5. WRITE Command........................................................................................................... 26
12.1.6. READ Command ............................................................................................................ 27
12.1.7. EEPROM Write Timing ................................................................................................... 28
13. Memory Map.................................................................................................................................. 29
14. Registers Functional Descriptions................................................................................................. 31
15. EEPROM Functional Descriptions ................................................................................................ 40
015002896-E-01
-2-
2015/10





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