Data Sheet

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APDS-9301

Miniature Ambient Light Photo Sensor

with Digital (I

C) Output

Data Sheet

Description

The APDS-9301 is Light-to-Digital Ambient Light Photo

Sensor that converts light intensity to digital signal output

capable of direct I

C interface. Each device consists of one

broadband photodiode (visible plus infrared) and one

infrared photodiode. Two integrating ADCs convert the

photodiode currents to a digital output that represents the

irradiance measured on each channel. This digital output

can be input to a microprocessor where illuminance

(ambient light level) in lux is derived using an empirical

formula to approximate the human-eye response.

Application Support Information

The Application Engineering Group is available to

assist you with the application design associated with

APDS-9301 ambient light photo sensor module. You can

contact them through your local sales representatives for

additional details.

Features

• Approximate the human-eye response

• Precise Illuminance measurement under diverse light-

ing conditions

• Programmable Interrupt Function with User-Deﬁned

Upper and Lower Threshold Settings

• 16-Bit Digital Output with I

C Fast-Mode at 400 kHz

• Programmable Analog Gain and Integration Time

• Miniature ChipLED Package

– Height – 0.55mm

– Length – 2.60mm

– Width – 2.20mm

• 50/60-Hz Lighting Ripple Rejection

• Typical 3.0V Input Voltage

• Low Active Power (0.6 mW Typical) with Power Down

Mode

• RoHS Compliant

Applications

• Detection of ambient light to control display

backlighting

– Mobile devices – Cell phones, PDAs, PMP

– Computing devices – Notebooks, Tablet PC, Key

board

– Consumer devices – LCD Monitor, Flat-panel TVs,

Video Cameras, Digital Still Camera

• Automatic Residential and Commercial Lighting

Management

• Automotive instrumentation clusters

• Electronic Signs and Signals

Ordering Information

Part Number Packaging Type Package Quantity

APDS-9301-020 Tape and Reel 6-pins Chipled package 2500

Summary of content (21 pages)

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APDS-9301 Miniature Ambient Light Photo Sensor with Digital (I2C) Output Data Sheet Description Features The APDS-9301 is Light-to-Digital Ambient Light Photo Sensor that converts light intensity to digital signal output capable of direct I2C interface. Each device consists of one broadband photodiode (visible plus infrared) and one infrared photodiode. Two integrating ADCs convert the photodiode currents to a digital output that represents the irradiance measured on each channel.
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Functional Block Diagram Command Register ADC VDD = 2.7 V to 3.6 V ADDR SEL Address Select Ch0 (Visible + IR) Ch1 (IR) ADC Register ADC Interrupt INT I2C SCL SDA GND I/O Pins Configuration Table Pin Symbol Type 1 VDD Voltage Supply 2 GND Ground 3 ADDR SEL Address Select 4 SCL Serial Clock 5 SDA Serial Data 6 INT Interrupt Absolute Maximum Ratings Parameter Symbol Min Max Unit Supply voltage VDD – 3.8 V Digital output voltage range VO -0.5 3.
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Operating Characteristics, High Gain (16x), VDD = 3.
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NOTES: 2. Optical measurements are made using small–angle incident radiation from light–emitting diode optical sources. Visible 640 nm LEDs and infrared 940 nm LEDs are used for final product testing for compatibility with high–volume production. 3. The 640 nm irradiance Ee is supplied by an AlInGaP light–emitting diode with the following characteristics: peak wavelength λp = 640 nm and spectral halfwidth ∆λ½ = 17 nm. 4.
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Parameter Measurement Information t(LOW) SCL t(R) t(F) VIH VIL t(HDSTA) t(HIGH) t(SUSTA) t(HDDAT) t(BUF) t(SUSTO) t(SUDAT) VIH VIL SDA P Stop Condition S Start Condition Start SCL S Stop t(LOWSEXT) t(LOWMEXT) SCLACK P t(LOWMEXT) SCLACK t(LOWMEXT) SDA Figure 1.
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Typical Characteristics 0.6  - Wavelength - nm 0.4 Channel 1 Photodiode 0.2 0 300 Normalized Responsivity Normalized Responsivity Channel 0 Photodiode 0.8 400 500 600 700 800 900 Spectral Responsivity 1000 1100 Optical Axis 1.0 1 0.8 0.6 0.4 0.2 0 -90 -60 -30 0 30  - Angular Displacement - 470 pF 60 90 Figure 4. Normalized Responsitivity vs. Spectral Responsivity Figure 5. Normalized Responsivity vs.
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1 7 1 1 8 1 1 S Slave Address Wr A Data Byte A P X X A Acknowledge (this bit position may be 0 for an ACK or 1 for a NACK) P Stop Condition Rd Read (bit value of 1) S Start Condition Sr Repeated Start Condition Wr Write (bit value of 0) X Shown under a field indicates that that field is required to have a value of X ... Continuation of protocol Master-to-Slave Slave-to-Master Figure 6.
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Register Set The APDS-9301 is controlled and monitored by sixteen registers (three are reserved) and a command register accessed through the serial interface. These registers provide for a variety of control functions and can be read to determine results of the ADC conversions. The register set is summarized in Table 2. Table 2.
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Command Register The command register specifies the address of the target register for subsequent read and write operations. The Send Byte protocol is used to configure the COMMAND register. The command register contains eight bits as described in Table 3. The command register defaults to 00h at power on. Table 3. Command Register 7 6 5 4 CMD CLEAR WORD Resv 0 0 0 0 Reset Value: 3 2 1 0 ADDRESS 0 0 COMMAND 0 0 FIELD BIT DESCRIPTION CMD 7 Select command register. Must write as 1.
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Timing Register (1h) The TIMING register controls both the integration time and the gain of the ADC channels. A common set of control bits is provided that controls both ADC channels. The TIMING register defaults to 02h at power on. Table 5. Timing Register 1hr 7 6 5 4 3 2 Resv Resv Resv GAIN MANUAL Resv 0 0 0 0 0 0 Reset Value: 1 0 INTEG 1 TIMING 0 FIELD BIT DESCRIPTION Resv 7-5 Reserved. Write as 0. GAIN 4 Switches gain between low gain and high gain modes.
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Interrupt Threshold Register (2h - 5h) The interrupt threshold registers store the values to be used as the high and low trigger points for the comparison function for interrupt generation. If the value generated by channel 0 crosses below or is equal to the low threshold specified, an interrupt is asserted on the interrupt pin. If the value generated by channel 0 crosses above the high threshold specified, an interrupt is asserted on the interrupt pin.
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Table 9. Interrupt Control Select INTR FIELD VALUE READ VALUE 00 Level Interrupt output disabled 01 Level Interrupt output enabled Table 10.
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ADC Channel Data Registers (Ch - Fh) The ADC channel data are expressed as 16-bit values spread across two registers. The ADC channel 0 data registers, DATA0LOW and DATA0HIGH provide the lower and upper bytes, respectively, of the ADC value of channel 0. Registers DATA1LOW and DATA1HIGH provide the lower and upper bytes, respectively, of the ADC value of channel 1. All channel data registers are read-only and default to 00h on power up. Table 12.
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APDS-9301 Package Outline 0.25±0.15 2.20±0.1 1.05 0.25±0.15 5 4 6 3 1 2 0.35±0.15 0.70 0.35±0.15 0.1 Pin 1 Marker 3.00° Coplanarity±0.1 0.55±0.1 0.18 2.60±0.1 6 X 0.65±0.15 6 X R0.18 2 X 0.6±0.05 4 X 0.35±0.15 Pin 1 : Vdd Pin 2 : GND Pin 3 : ADR SEL Pin 4 : SCL Pin 5 : SDA Pin 6 : INT Notes: All dimensions are in millimeters. Dimension tolerance is ±0.2 mm unless otherwise stated PCB Pad Layout The suggested PCB layout is given below: Notes: All linear dimensions are in millimeters.
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APDS-9301 Tape and Reel Dimensions 15
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Moisture Proof Packaging Chart All APDS-9301 options are shipped in moisture proof package. Once opened, moisture absorption begins. This part is compliant to JEDEC Level 3.
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Recommended Reflow Profile MAX 260C T - TEMPERATURE (°C) 255 R3 230 217 200 180 150 120 R2 R4 60 sec to 90 sec Above 217 C R5 R1 80 25 0 P1 HEAT UP 50 100 150 P2 SOLDER PASTE DRY 200 P3 SOLDER REFLOW 250 P4 COOL DOWN 300 t-TIME (SECONDS) Process Zone Symbol ∆T Maximum ∆T/∆time or Duration Heat Up P1, R1 25°C to 150°C 3°C/s Solder Paste Dry P2, R2 150°C to 200°C 100s to 180s Solder Reflow P3, R3 P3, R4 200°C to 260°C 260°C to 200°C 3°C/s -6°C/s Cool Down P4, R5 200°C to 2
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Appendix A: Window Design Guide A1: Optical Window Dimensions To ensure that the performance of the APDS-9301 will not be affected by improper window design, there are some criteria requested on the dimensions and design of the window. There is a constraint on the minimum size of the window, which is placed in front of the photo light sensor, so that it will not affect the angular response of the APDS9301. This minimum dimension that is recommended will ensure at least a ±35° light reception cone.
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Table A1. Recommended dimension for optical window Flat Window (L = 0.0 mm, T = 1.0 mm) WD (T+L+Z) Flat window with Light Pipe (D2 = 1.55mm, Z = 0.5mm, T = 1.0mm) Z D1 D1 L 1.5 0.5 2.25 – – 2.0 1.0 3.25 – – 2.5 1.5 4.25 – – 3.0 2.0 5.00 2.5 1.5 6.0 5.0 8.50 2.5 4.5 2.60 1.50 5 4 6 3 2.20 1.0500 Active area 1 Pin 1 Marker 2 1.3001 Notes: 1. All dimensions are in millimeters 2. All package dimension tolerance in ± 0.2mm unless otherwise specified Figure A3.
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Appendix B: Application Circuit Pin 1: VDD VIO 0.1uF R1 R2 R3 Pin 1 Pin 4 Pin 2 SCL APDS-9301 MCU Pin 5 SDA Pin 6 INT Pin 3 ** ADDR_SEL Pin 2: GND ** Note: ADDR_SEL Float : Slave address is 0111001 Figure B1. Application circuit for APDS-9301 The power supply lines must be decoupled with a 0.1 uF capacitor placed as close to the device package as possible, as shown in Figure B1.
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Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Avago Technologies: APDS-9301-020