1 fn6510.1 isl29101 small, low power, voltage-output ambient light ph oto detect ic the isl29101 is a low power ambient light-to-voltage optical sensor combining a photodiode array, a current amplifier and a micropower operational amplifier on a single monolithic ic. similar to the human eye, the photodiode array has a peak response at 550nm and spans from 400nm to 600nm, rejecting uv light and ir light. the output voltage is proportional to the visible light intensity from 0.5 lux up to 10,000 lux. however, the input luminance range can go up to 30,000 lux with some compromise in linearity. a dark current compensation circuit aids the photodiode array to minimize temperature dependent leakage currents in the absence of light, improving the light sensity at low lux levels. housed in an ultra-compact surface mount 2mmx2.1mm odfn clear plastic package, th is device is excellent for power saving control functions in cell phones, pdas, and other handheld applications. simplified block diagram features ? 0.5 lux to 10,000 lux range ? 1.8v to 3.3v supply range ? low supply current ? fast response time ? excellent linearity of output voltage vs light intensity ? close to human eye response ? good ir rejection ? internal temperature compensation ? operating temperature range -40c to +85c ? ultra-compact surface mount package ? pb-free (rohs compliant) applications ? display and keypad dimming for: - mobile devices: smart phone, pda, gps - computing devices: notebook pc, webpod - consumer devices: lcd-tv, digital picture frame, digital camera ? industrial and medical light sensing pinout isl29101 (6 ld odfn) top view ordering information part number (notes 2, 3) temp. range (c) package (pb-free) pkg. dwg. # ISL29101IROZ-T7 (note 1) -40 to +85 6 ld odfn l6.2x2.1 ISL29101IROZ-T7a (note 1) -40 to +85 6 ld odfn l6.2x2.1 isl29101iroz-evalz evaluation board notes: 1. please refer to tb347 for details on reel specifications. 2. these intersil pb-free plastic packaged products employ special pb-free material sets; molding compounds/die attach materials and nipdau plate - e4 termination finish, which is rohs compliant and compatible with both snpb and pb-free soldering operations. intersil pb-free products are msl classified at pb- free peak reflow temperatures that meet or exceed the pb-free requirements of ipc/jedec j std-020. 3. for moisture sensitivity le vel (msl), please see device information page for isl29101 . for more information on msl please see tech brief tb477 . vdd gnd rext vout 1 2 4 6 light data process current amplifier output current light intensity photodiode array + - pin descriptions pin name description 1 vdd supply. 1.8v to 3.3v 2 gnd ground 3, 5 nc no connect 4 rext connected to an external resistor to gnd setting the light-to-voltage proportionality constant. 6 vout voltage output 1 2 3 6 5 4 vdd gnd nc vout nc rext thermal pad* *thermal pad can be connected to gnd or electrically isolated data sheet november 5, 2012 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | copyright intersil americas llc 2008, 2012. all rights reserved intersil (and design) is a trademark owned by intersil corporation or one of its subsidiaries. all other trademarks mentioned are the property of their respective owners.
2 fn6510.1 november 5, 2012 absolute maxi mum ratings (t a = +25c) thermal information supply voltage between v dd and gnd . . . . . . . . . . . . . . . . . . 3.6v r ext . . . . . . . . . . . . . . . . . . . . . . . . . (-0.5v - gnd) to (0.5v + v dd ) v out . . . . . . . . . . . . . . . . . . . . . . . . . (-0.5v - gnd) to (0.5v + v dd ) v out short circuit current . . . . . . . . . . . . . . . . . . . . . . . . . . <10ma esd rating human body model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3000v machine model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300v thermal resistance ja (c/w) 6 ld odfn (note 4) . . . . . . . . . . . . . . . . . . . . . . . . . 88 maximum die temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +90c storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-40c to +100c operating temperature . . . . . . . . . . . . . . . . . . . . . . .-40c to +85c pb-free reflow profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/pb-freereflow.asp caution: do not operate at or near the maximum ratings listed for extended periods of time. exposure to such conditions may adv ersely impact product reliability and result in failures not covered by warranty. note: 4. ja is measured in free air with the component mounted on a high ef fective thermal conductivity te st board with ?direct attach? fe atures. see tech brief tb379 . important note: all parameters having min/max specifications are guaranteed. typical values are for information purposes only. u nless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: t j = t c = t a electrical specifications v dd = 3v, t a = +25c, r ext = 100k , no load at v out , green led light, unless otherwise specified. parameter description condition min (note 6) typ max (note 6) unit e range of input light intensity 0.5 to 10k lux vdd power supply range 1.8 3.3 v i dd supply current e = 1000 lux 23 35 a e = 100 lux 3.5 a e = 0 lux 0.65 a v out0 light-to-voltage accuracy e = 100 lux 165 mv v out1 light-to-voltage accuracy e = 1000 lux 1.15 1.65 2.13 v v dark voltage output in the absence of light e = 0 lux, r l = 10m 125mv v out output voltage variation over three light sources: fluorescent, incandescent and halogen e = 1000 lux 20 % psrr power supply rejection ratio e = 100 lux, v dd = 1.8v to 3.3v 2.5 mv/v v o-max maximum output compliance voltage at 95% of nominal output v dd - 0.7v v t r isrc and isnk rise time (note 5) e = 300 lux from 0 lux 104 s e = 1000 lux from 0 lux 27 s t f isrc and isnk fall time (note 5) e = 300 lux to 0 lux 562 s e = 1000 lux to 0 lux 233 s t d isrc and isnk delay time for rising edge (note 5) e = 300 lux from 0 lux 504 s e = 1000 lux from 0 lux 209 s t s isrc and isnk delay time for falling edge (note 5) e = 300 lux to 0 lux 30 s e = 1000 lux to 0 lux 18 s i sc short circuit current of op amp 11 ma sr slew rate of op amp 10 v/ms v os offset voltage of op amp 1.2 mv note: 5. switching time measurement is based on figures 1 and 2. 6. compliance to datasheet limits is assured by one or mo re methods: production test, characterization and/or design. isl29101
3 fn6510.1 november 5, 2012 figure 1. test circuit for rise/fall time measurement figure 2. timing diagram isl29101 function generator v dd v out power supply or source meter r ext input light output 10% 90% t r t f % 10% 90% t d t s typical performance curves figure 3. spectral response figure 4. spectrum of light sources figure 5. radiation pattern figure 6. output voltage vs light sensitivity -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 300 400 600 800 1.0k wavelength (nm) normalized response light sensor response human eye response 1.1k 0 0.2 0.4 0.6 0.8 1.0 1.2 300 400 500 600 700 800 900 1000 1100 wavelength (nm) normalized light intensity sun halogen incandescent wled fluorescent radiation pattern luminosity angle relative sensitivity 90 80 70 60 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 light intensity (lux) output voltage (v) fluorescent halogen incandescent 0 v dd = 3v r ext = 10k isl29101
4 fn6510.1 november 5, 2012 figure 7. output voltage vs light sensitivity fi gure 8. output voltage vs light intensity figure 9. transient time vs lux change from 0 lux figure 10. output voltage vs temperature at 0 lux figure 11. supply current vs temperature at 0 lux figure 12. normalized output voltage vs temperature typical performance curves (continued) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 100 200 300 400 500 600 700 800 900 1000 light intensity (lux) output voltage (v) fluorescent halogen incandescent v dd = 3v r ext = 100k light intensity = 0 lux v dd = 3v r ext = 10m light intensity = 0 lux no load 0.97 0.98 0.99 1.00 1.01 1.02 1.03 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 temperature (c) normalized output voltage variation v dd = 3v fluorescent light 300 lux 1000 lux isl29101
5 fn6510.1 november 5, 2012 figure 13. supply current vs temperature figure 14. normalized output voltage vs supply voltage figure 15. supply current vs supply voltage f igure 16. transient response of isl29101 to change in light intensity typical performance curves (continued) 0 4 6 8 10 12 14 16 18 20 22 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 temperature (c) supply current (a) 1100 lux 300 lux v dd = 3v fluorescent light no load r ext = 100k v dd = 3 fluorescent light intensity = 1100 lux 20.0 20.5 21.0 21.5 22.0 22.5 23.0 1.5 2.0 2.5 3.0 3.5 4.0 supply voltage (v) supply current no load v dd = 3 fluorescent light intensity = 1100 lux light intensity v dd = 3v, r ext = 100k : light intensity rises from 0 lux to 300 lux and falls from 300 lux to 0 lux with white led v out 0v isl29101
6 all intersil u.s. products are manufactured, asse mbled and tested utilizing iso9000 quality systems. intersil corporation?s quality certifications ca n be viewed at www.intersil.com/design/quality intersil products are sold by description only. intersil corpor ation reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnishe d by intersil is believed to be accurate and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of paten ts or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of intersil or its subsidiari es. for information regarding intersil corporation and its products, see www.intersil.com fn6510.1 november 5, 2012 application information light-to-voltage conversion the isl29101 has responsiveness that is a linear function of the light intensity intercepted by the photodiode in lux. because the photodiode has a responsivity that resembles the human eye, conversion rate is independent of the light source (fluorescent light, in candescent light or direct sunlight). here, v out is the output voltage and e is the light intensity. r ext is the value of the external resistor, which is used to set the light-to-voltage scaling constant. the compliance of the isl29101?s output circui t may result in premature saturation when an excessively large r ext is used. the output compliance voltage is 700mv below the supply voltage, as listed in v o-max of the ?electrical specifications? table on page 2. optical sensor location outline the green area in figure 17 shows the optical sensor location outline of isl29101. along the pinout direction, the center line (cl) of the sensor coincides with that of the packaging. the sensor width in this direction is 0.39mm. perpendicular to the pin-out dire ction, the cl of the sensor has an 0.19mm offset from the cl of packaging away from pin-1. the sensor width in this direction is 0.46mm. v out 1.6 a100lux ) er ext ? ? ? ( = (eq. 1) figure 17. 6 ld odfn sensor location outline 2.10mm 2.00mm 0.39mm 0.46mm 0.19mm sensor offset 29101 isl29101
7 fn6510.1 november 5, 2012 isl29101 package outline drawing l6.2x2.1 6 lead optical dual flat no-lead plastic package (odfn) rev 3, 5/11 located within the zone indicated. the pin #1 identifier may be unless otherwise specified, tolerance : decimal 0.05 tiebar shown (if present) is a non-functional feature. the configuration of the pin #1 id entifier is optional, but must be between 0.15mm and 0.30mm from the terminal tip. dimension applies to the metallized terminal and is measured dimensions in ( ) for reference only. dimensioning and tolerancing conform to asme y14.5m-1994. 6. either a mold or mark feature. 3. 5. 4. 2. dimensions are in millimeters. 1. notes: bottom view detail "x" side view typical recommended land pattern top view (4x) 0.10 index area pin 1 a b pin #1 b 0.10 ma c c seating plane base plane 0.08 0.10 see detail "x" c c 0 . 00 min. 0 . 05 max. 0 . 2 ref c 5 1 6 6 2.10 2.00 2.10 2.50 (1.35) (6x0.30) 0.65 (6x0.55) (6x0.20) (4x0.65) 1.30 ref 1.35 0.65 0.65 6x0.35 0.05 package 6x 0.300.05 index area outline 4 max 0.75
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