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| (R) EL7900 Data Sheet June 20, 2005 FN7377.0 PRELIMINARY Ambient Light Photo Detect IC The EL7900 is a light-to-current optical sensor combining a photodiode and a current amplifier on a single monolithic IC. Output current is directly proportionate to the light intensity on the photodiode. Its sensitivity is superior to that of a phototransistor and exhibits little variation. Its spectral sensitivity matches closely to the luminous efficiency and linearity. Housed in an ultra-compact surface mount clear plastic package, this device is excellent for power saving control function in cell phones, PDAs, and other handheld applications. Features * Monolithic IC containing photodiode and amplifier * Converts light intensity to current * 2.5V to 5.5V supply range * Low supply current - 1A * Excellent output linearity of luminance * Ultra-compact and light surface mount package * Pb-Free plus anneal available (RoHS compliant) Applications * Mobile phones * Notebook PCs * PDAs * Video cameras * Digital cameras Pinout EL7900 (5-PIN DFN) TOP VIEW VCC OUTPUT Ordering Information GND PART NUMBER EN NC PACKAGE 5-Pin ODFN (Pb-free) TAPE & REEL - PKG. DWG. # MDP0052 EL7900ILCZ (See Note) NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are 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. 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2005. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. EL7900 Absolute Maximum Ratings (TA = 25C) Supply Voltage between VSD and GND . . . . . . . . . . . . . . . . . . . .6V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . . TBD Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40C to +85C Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . +125C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65C to +150C CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA Electrical Specifications PARAMETER ICC Supply Current VCC = 3V, TA = 25C, fluorescent light, unless otherwise specified. CONDITION RL = 1k, EV = 100lx EV = 0lx MIN TYP 62 1 39 60.5 6.2 0.15 2.7 105 170 165 65 125 225 200 85 0.6 1.8 82 MAX UNIT A A A A A V s s s s V V DESCRIPTION IL1 IL2 ILEAK VO-MAX TR TF TD TS VLO VHI Light Current Light Current Dark Current Maximum Output Compliance Voltage Rise Time (See Note) Fall Time (See Note) Delay Time for Rising Edge (See Note) Delay Time for Falling Edge (See Note) Maximum Voltage at EN Pin to Enable Minimum Voltage at EN Pin to Disable EV = 100lx EV = 10lx EV = 0lx at 95% of nominal output current, EV = 100lx RL = 5k, EV = 300lx RL = 5k, EV = 300lx RL = 5k, EV = 300lx RL = 5k, EV = 300lx NOTE: Switching time measurement is based on Figures 1 and 2. CH1 VCC PULSE DRIVE TD 1V 1mS TS PULSE DRIVE EL7900 RL VOUT 0.5V CH2 VOUT TR VS=3V TA=27C 80% 20% TF FIGURE 1. RISE/FALL TIME MEASUREMENT FIGURE 2. 2 FN7377.0 June 20, 2005 EL7900 Typical Performance Curves 100 RELATIVE SENSITIVITY (%) 700 VCC = 3V 600 FLUORESCENT LIGHT 75 OUTPUT CURRENT (A) 500 400 300 200 100 0 428 444 460 476 492 508 524 540 556 572 588 604 620 636 652 668 0 0 200 400 600 800 1000 ILLUMINATION (LX) 50 25 SPECTRAL WAVELENGTH (nm) FIGURE 3. RELATIVE SENSITIVITY FIGURE 4. SENSITIVITY OUTPUT CURRENT - NO LIGHT (A) 0.2 0.18 VDD=3V VDD=3V 1.15 FLUORESCENT LIGHT OF 50 LUX GAIN/GAIN (25C) 1.1 1.05 1 0.95 0.9 0.85 1.2 0.16 0.14 0.12 0.1 -60 -40 -20 0 20 40 60 80 100 0.8 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) TEMPERATURE (C) FIGURE 5. DARK CURRENT vs TEMPERATURE FIGURE 6. GAIN vs TEMPERATURE 0.6 OUTPUT COMPLIANCE VOLTAGE (VDD-VOUT) (V) 0.5 0.4 0.3 0.2 0.1 VDD=3V TA=27C 0 -200 0 200 400 600 800 1000 1200 OUTPUT CURRENT (A) FIGURE 7. OUTPUT COMPLIANCE VOLTAGE vs CURRENT 3 FN7377.0 June 20, 2005 EL7900 Pin Descriptions PIN 1 2 3 4 5 NAME VCC GND EN NC Output DESCRIPTION Supply, 2.5V to 5.5V Ground Enable No connect Current output pin ENABLE 3 Block Diagram VCC 1 5 OUTPUT 2 GND 4 FN7377.0 June 20, 2005 EL7900 Package Outline Drawing NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at http://www.intersil.com/design/packages/index.asp All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation's quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished 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 patents 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 subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 5 FN7377.0 June 20, 2005 |
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