APDS-9922-001 Digital Proximity and Ambient Light Sensor in Small Aperture Data Sheet Description Features The Broadcom APDS-9922-001 provides digital ambient light ALS, IR LED, and Proximity Detector in an Optical Module sensing (ALS), IR LED and a complete proximity detection Ambient Light Sensing (ALS) system in a single 8-pin package that can be used under a small Light output proportional to light intensity aperture of the devices cover windows. The proximity function Uses optical coating technology to emulate the offers plug-and-play detection to 70 mm, thus eliminating the human eye spectral response need for factory calibration of the end equipment or Works well under different light source conditions subassembly. The proximity detection feature operates well Low light densitivity operation behind dark glass from bright sunlight to dark rooms. The wide dynamic range Up to 20 bits resolution also allows for operation in short distance detection behind Temperature compensation dark glass, such as a cell phone. 50 Hz/60 Hz light flicker immunity The ALS provides a photopic response to light intensity in low Fluorescent light flicker immunity light conditions or behind a dark faceplate. The APDS-9922-001 Proximity Detection (PS) approximates the response of the human eye providing direct Integrated IR LED and synchronous LED driver read out, where the output count is proportional to ambient Eliminates factory calibration of Prox light level. Low-light functionality enables operation behind Cancellation of cross-talk darkened glass. The APDS-9922-001 supports programmable hardware interrupt with hysteresis to respond to events. Up to 11 bits resolution Ambient light suppression The APDS-9922-001 is useful for display management by Wide supply voltage 1.7V to 3.6V extending battery life and providing optimum viewing in Power Management diverse lighting conditions. Display panel and keyboard Low active current 80 A typical at 1.8V backlighting can account for up to 30 to 40 percent of total Low standby current 500 nA typical at 1.8V platform power. The ALS features are ideal for use in notebook 2 PCs, LCD monitors, flat-panel televisions, and cell phones. I C Interface Compatible 2 Up to 400 kHz (I C Fast-Mode) The proximity function is targeted specifically towards Dedicated interrupt pin near-field proximity applications. In cell phones, the proximity Small Package L3.94 mm W2.36 mm H1.35 mm detection can detect when users position the phone close to their ear. The device is fast enough to provide proximity information at a high repetition rate needed when answering a Applications phone call. This provides both improved green power-saving Cell phone backlight dimming capability and the added security to lock the computer when Cell phone touch-screen disable the user is not present. The addition of the micro-optics lenses within the module provide highly efficient transmission and Notebook/monitor security reception of infrared energy, which lowers overall power Automatic speakerphone enable dissipation. Automatic menu pop-up Digital camera eye sensor Ordering Information Table 1 Ordering Information Part Number Packaging Quantity APDS-9922-001 Tape & Reel 5000 per reel Broadcom - 1 -APDS-9922-001 Data Sheet DISCLAIMER This preliminary data is provided to assist you in the evaluation of product(s) currently under development. Until Broadcom releases this product for general sales, Broadcom reserves the right to alter prices, specifications, features, capabilities, functions, release dates, and remove availability of the product(s) at anytime. Figure 1 Functional Block Diagram VDD Regulator Oscillator Interrupt INT Upper Threshold ALS ALS SCL ADC Data Lower Threshold Upper Threshold SDA PS PS ADC Data Lower Threshold LED A Constant Current Control Logic Sink LED K LDR GND Table 2 I/O Pins Configuration Pin Name Type Description 2 2 1SDA I/O I C serial data I/O terminal serial data I/O for I C. 2 INT O Interrupt open drain. 3 LDR I LED driver for proximity emitter up to 125 mA, open drain. 4 LEDK O LED cathode, connect to LDR pin in most systems to use internal LED driver circuit. 5 LEDA I LED anode, connect to VLED on PCB. 6 GND Ground Power supply ground. All voltages are referenced to GND. 2 2 7 SCL I I C serial clock input terminal clock signal for I C serial data. 8 VDD Supply Power supply voltage Broadcom - 2 - 2 I C Interfacing