OP T OE L E C TR O N I CS P R O DU C T S H E E T V I SH AY I NTE R TE C H N OL O G Y, I NC . VCNL4000 Integrated Proximity / Ambient Light Sensor Industrys First Optical Sensor Combining an IR Emitter, PIN Photodiode, 2 and Ambient Light Detector with 16-bit Resolution and I C Interface FEATURES AND BENEFITS L ow p r o fi l e s u r f a c e - m o u n t p a c k a g e: 3 . 9 5 m m x 3 . 9 5 m m x 0.75 H m m I n te g r a te d m o d u l e w i t h i n f r a r e d e m i t te r, a m b i e n t l i g h t s e n s o r, p r ox i m i t y s e n s o r, and signal conditioning IC G r e a t l y s i m p l i fi e s w i n d ow o p t i c s a n d P C B l ayo u t 2 C o m m u n i c a t i o n v i a I C interface L ow s t a n d by c u r r e n t c o n s u m p t i o n: 1. 5 A PROXIMITY FUNCTION AMBIENT LIGHT FUNCTION 16 - b i t e f fe c t i ve r e s o l u t i o n B u i l t- i n a m b i e n t l i g h t PI N p h o to d i o d e w i t h c l o s e to h u m a n eye s e n s i t i v i t y E xc e l l e n t c r o s s t a l k i m m u n i t y characteristic Pr o g r a m m a b l e L E D d r i ve c u r r e n t f r o m 16 - b i t d y n a m i c r a n g e f o r a m b i e n t l i g h t 10 m A to 20 0 m A i n 10 m A s te p s d e te c t i o n f r o m 0. 3 3 l x to 13 k l x Pr o g r a m m a b l e m e a s u r e m e n t r a te 10 0 Hz a n d 120 Hz fl i c ke r n o i s e f r o m 1 Hz to 25 0 Hz rejection Pr ox i m i t y d i s t a n c e u p to 20 c m ( 8 i n) APPLICATIONS Pr ox i m i t y s e n s o r f o r m o b i l e d ev i c e s: s m a r t p h o n e s , d i g i t a l c a m e r a s , t a b l e t P C s A m b i e n t l i g h t s e n s o r s f o r a ny d i s p l ay o r key p a d b a c k l i g h t to r e d u c e p owe r c o n s u m p t i o n a n d o p t i m i ze v i s i b i l i t y o f t h e s c r e e n b a s e d o n l i g h t i n g c o n d i t i o n s I n d u s t r i a l c o n t r o l s w h e r e a c t i o n i s d r i ve n b a s e d o n p r ox i m i t y o f a n o b j e c t o r ambient light conditions G a m i n g, e n te r t a i n m e n t www .vishay .com Datasheet and application note available on our website at VCNL4000 Vishay Semiconductors GND 12 NO MECHANICAL BARRIER NEEDED VCNL4010 IRED 11 nc IR Anode 1 Designing a discrete IR emitter, proximity sensor, and ambient light sensor into a Proxi PD smart phone and avoiding optical crosstalk is next to impossible. Combining the 10 nc IR Cathode 2 proximity and ambient light sensor into a single package is one step in the right MUX direction but it still leaves the difficulty of isolating the emitter from these detectors. Amp. LED Driver 9 nc IR Cathode 3 Integrating The VCNL4000 takes that next step by integrating a proximity and ambient light Oscillator ADC sensor with the infrared emitter. This stand-alone, single component greatly 8 nc SDA 4 Data Register Ambi PD Signal simplifies design by making the mechanical barriers unnecessary. The VCNL4000 is Command Register Processing 2 I C the industrys first optical sensor to offer proximity and ambient light sensing with 16- 7 V SCL 5 DD 2 bit resolution and I C interface. It has the industrys best range of up to 20 cm (8 in). 6 GND MODULATION ELIMINATES DC LIGHT NOISE The integrated infrared emitter has a peak wavelength of 890 nm. It emits light that reflects off an object within 20 cm of the sensor. The infrared light emitted is modulated at one of four user defined carrier frequencies: 390.625 kHz, 781.25 kHz, 1.5625 MHz, or 3.125 MHz. The PIN photodiode receives the light that is reflected off the object and converts it to a current. It has a peak sensitivity of 890 nm, matching the peak wavelength of the emitter. It is insensitive to ambient light. It ignores the DC component of light and looks for the pulsed light at one of the four frequencies used by the emitter. Using a modulated signal for proximity provides distinct advantages over other sensors on the market. 140 s 100 mA 100 ms 16-BIT RESOLUTION YIELDS CLEAR SIGNAL Even with a dirty, scratched or poor IR transparent window, the 16-bit resolution compensates and delivers excellent range and response. The proximity sensor will work well in all lighting conditions and with any transparent cover. Ambient Human C1 C2 Light Sensor Eye 22 F 100 nF Visible Infrared 1.0 Incandescent light IR Anode (1) R1 0.8 V (7) DD C4 C3 10R 0.6 10 F 100 nF Silicon photodiode 0.4 VCNL4000 0.2 2 0.0 SCL (5) I C bus clock SC 0500 700 1000 1500 GND (6, 12) 2 SDA (4) I C bus data SC Wavelength (nm) Photopic peak (550 nm) Build Vishay into your Design This document is subject to change without notice. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000 For technical questions, contact detectortechsupport vishay.com VMN-PT0251-1107 Application Schematic Examples Ambient Light Sensor Performance