APDS-9250 Digital RGB, IR and Ambient Light Sensor Data Sheet Description Features The APDS-9250 device uses 4 individual channels of red, Colour and Ambient Light Sensing (CS-RGB and ALS) green, blue, and IR (RGB+IR) in a specially designed matrix - Accuracy of Correlated Color Temperature (CCT) arrangement. This allows the device to have optimal - Individual channels for Red, Green, Blue and Infared angular response and accurate RGB spectral response - Approximates Human Eye Response with Green with high lux accuracy over various light sources. Channel 2 APDS-9250 supports the I C interface and has a program- - Red, Green, Blue, Infrared and ALS Sensing mable interrupt controller that frees up micro-controller - High Sensitivity in low lux condition Ideally suited resources. for Operation Behind Dark Glass The device detects light intensity under a variety of - Wide Dynamic Range: 18,000,000: 1 lighting conditions and through a variety of attenua- - Up to 20-Bit Resolution tion materials, including dark glass. APDS-9250 could be configured as Ambient Light Sensor and RGB+IR Sensor. Power Management The color-sensing feature is useful in applications such as - Low Active Current 130 A typical LED RGB backlight control, solid-state lighting, reflected - Low Standby Current 1A typical LED color sampler, or fluorescent light color temperature 2 I C-bus Fast Mode Compatible Interface detection. The integrated IR blocking filter makes this 2 - Up to 400 kHz (I C Fast-Mode) device an excellent ambient light sensor and color tem- perature monitor sensor together with the temperature - Dedicated Interrupt Pin compensation that allows output to have less variation Small Package L 2.0 W 2.0 H 0.65 mm over the temperature. Applications Ordering Information OLED Display Control Part Number Packaging Quantity RGB LED Backlight Control APDS-9250 Tape & Reel 5000 per reel Ambient Light Color Temperature SensingFunctional Block Diagram VDD Interrupt INT GND RGB + IR Control Upper Threshold SCL RED ADC/Data Lower Threshold SDA GREEN ADC/Data BLUE ADC/Data IR ADC/Data Description: I/O Pins Configuration The APDS-9250 device contains multiple photodiodes for Pin Name Type Description Light Sensor (R, G, B, IR channel) that are designed in a 2 1 SCL I I C Serial Clock Input Terminal 2 matrix placement to achieve optimal angular response at Clock Signal for I C Serial Data the fall of incident light angle. 2 2 SDA I/O Serial Data I/O for I C The device provides on-chip multiple diodes, ADCs, state 3 VDD Supply Power Supply Voltage 2 machine, non-volatile memory and an I C interface. 4 INT O Interrupt Open Drain Integration of all color sensing channels occurs simulta- 5 NC No Connect neously. Upon completion of the conversion cycle, the 6 GND Ground Power Supply Ground. All conversion result is transferred to the corresponding data Voltages are referenced to GND registers. Communication with the device is accomplished 2 through a fast (up to 400 kHz), two-wire I C serial bus for easy connection to a microcontroller or embedded con- troller. The APDS-9250 provides a separate pin for inter- rupts. When interrupts are enabled and a preset value is exceeded, the interrupt pin is asserted and remains asserted until cleared by the controlling firmware. The interrupt feature simplifies and improves system effi - ciency by eliminating the need to poll a sensor for a light intensity. An interrupt is generated after completion of new conversion of the light sensor channels where the light sensor interrupt source can work on any of the Red, Green, Blue, IR channels. Additionally, a programmable interrupt persistence feature allows the user to determine how many consecutive exceeded thresholds are necessary to trigger an interrupt. 2 I2C Interfacing