APDS-9930 Digital Proximity and Ambient Light Sensor Data Sheet Description Features The APDS-9930 provides digital ambient light sensing ALS, IR LED and Proximity Detector in an Optical Module (ALS), IR LED and a complete proximity detection system Ambient Light Sensing (ALS) in a single 8 pin package. The proximity function offers Approximates Human Eye Response plug and play detection to 100 mm (without front glass) Programmable Interrupt Function with Upper and thus eliminating the need for factory calibration of the Lower Threshold end equipment or sub-assembly. The proximity detection Up to 16-Bit Resolution feature operates well from bright sunlight to dark rooms. High Sensitivity Operates Behind Darkened Glass The wide dynamic range also allows for operation in short Low Lux Performance at 0.01 lux distance detection behind dark glass such as a cell phone. In addition, an internal state machine provides the ability Proximity Detection to put the device into a low power mode in between Fully Calibrated to 100 mm Detection ALS and proximity measurements providing very low Integrated IR LED and Synchronous LED Driver average power consumption. The ALS provides a photopic Eliminates Factory Calibration of Prox response to light intensity in very low light condition or Programmable Wait Timer behind a dark faceplate. Wait State Power 90 A Typical The APDS-9930 is particularly useful for display man- Programmable from 2.7 ms to > 8 sec agement with the purpose of extending battery life and 2 I C Interface Compatible providing optimum viewing in diverse lighting conditions. 2 Up to 400 kHz (I C Fast-Mode) Display panel and keyboard backlighting can account for Dedicated Interrupt Pin up to 30 to 40 percent of total platform power. The ALS Sleep Mode Power - 2.2 A Typical features are ideal for use in notebook PCs, LCD monitors, Small Package L3.94 x W2.36 x H1.35 mm flat-panel televisions, and cell phones. The proximity function is targeted specifically towards Applications near field proximity applications. In cell phones, the Cell Phone Backlight Dimming proximity detection can detect when the user positions Cell Phone Touch-screen Disable the phone close to their ear. The device is fast enough to Notebook/Monitor Security provide proximity information at a high repetition rate Automatic Speakerphone Enable needed when answering a phone call. This provides both Automatic Menu Pop-up improved green power saving capability and the added security to lock the computer when the user is not present. Digital Camera Eye Sensor The addition of the micro-optics lenses within the module, Package Diagram provide highly efficient transmission and reception of infrared energy which lowers overall power dissipation. 8 - VDD 1 - SDA Ordering Information 7 - SCL 2 - INT Part Number Packaging Quantity APDS-9930 Tape & Reel 5000 per reel 6 - GND 3 - LDR APDS-9930-140 Tape & Reel 1000 per reel 5 - LED A 4 - LED K APDS-9930-200 Tape & Reel 1000 per reelFunctional Block Diagram VDD Interrupt INT Upper Threshold ALS Data ADC SCL Lower Threshold Ch0 Ch1 Upper Threshold SDA Prox Detect Data ADC LED A Lower Threshold Prox IR LED LED Regulated Control Constant Current Logic Sink LED K LDR GND Detailed Description The APDS-9930 light-to-digital device provides on-chip efficiency by eliminating the need to poll a sensor for a Ch0 and Ch1 diodes, integrating amplifiers, ADCs, accumu - light intensity or proximity value. An interrupt is generated lators, clocks, buffers, comparators, a state machine and an when the value of an ALS or proximity conversion exceeds 2 I C interface. Each device combines one Ch0 photodiode either an upper or lower threshold. Additionally, a pro- (visible plus infrared) and one Ch1 infrared-responding (IR) grammable interrupt persistence feature allows the user photodiode. Two integrating ADCs simultaneously convert to determine how many consecutive exceeded thresholds the amplified photodiode currents to a digital value are necessary to trigger an interrupt. Interrupt thresholds providing up to 16-bits of resolution. Upon completion of and persistence settings are configured independently for the conversion cycle, the conversion result is transferred to both ALS and proximity. the Ch0 and CH1 data registers. This digital output can be Proximity detection is fully provided with an 850 nm IR read by a microprocessor where the illuminance (ambient LED. An internal LED driver (LDR) pin, is jumper connected light level) in Lux is derived using an empirical formula to to the LED cathode (LED K) to provide a factory calibrated approximate the human eye response. proximity of 100 +/- 20 mm. This is accomplished with a Communication to the device is accomplished through a proprietary current calibration technique that accounts 2 fast (up to 400 kHz), two-wire I C serial bus for easy con- for all variances in silicon, optics, package and most impor- nection to a microcontroller or embedded controller. The tantly IR LED output power. This will eliminate or greatly digital output of the APDS-9930 device is inherently more reduce the need for factory calibration that is required immune to noise when compared to an analog interface. for most discrete proximity sensor solutions. While the APDS-9930 is factory calibrated at a given pulse count, The APDS-9930 provides a separate pin for level-style the number of proximity LED pulses can be programmed interrupts. When interrupts are enabled and a pre-set from 1 to 255 pulses, which will allow greater proximity value is exceeded, the interrupt pin is asserted and distances to be achieved. Each pulse has a 16 s period. remains asserted until cleared by the controlling firmware. The interrupt feature simplifies and improves system 2 2 I C Interface