1 quad segment photo sensor ic ISL58344 the ISL58344 photo sensor ic has a wide optical spectral sensitivity from 400nm to 1000nm. it is good for multiple light source applications, such as lase r base projectors. the three sets of gain registers can be used to adjust optical-to-electrical conversion gain for each red (r), green (g), and blue (b) laser or any wavelength in the spectral range for the application. the ISL58344 is a single die device that has four identical photo detectors arranged in segments that are opti mized for laser beam spot alignment. quad segm ents can be used as a single photo diode for optical power ca libration and gamma correction. the detectors can also be split in to two sections with subtraction signal output for laser beam posi tion alignment. beam detection can also be used to compensate for mems scanning projector geometric distortions and temperature distortions. registers can be updated in real time while device is in operation. the ISL58344 can be put in sleep mode through serial interface, where it consumes virtually no power. the ena pin, when low, will put the device in standby mode. to ggling the ena pin hi will turn the device on quickly. the ISL58344 operates from a single +3.3v supply. it is available in a space-saving 9 pin glass top bga package. related literature ? see tb478 ?pcb assembly guidelines for shell-op 3d package? features ? sensitive from 400nm to 1000 nm with patented technology for improved blue photo response ? differential voltage output ? internal output reference or external output reference ? single +3.3v power supply ? serial interface for gain calibration ? fast settling time <20ns ? wide signal bandwidth >50mhz ? wide signal gain dynamic range >25db ? sleep mode for conserving power ? quad pd segments provide laser beam offset for beam realignment capability ? white balance for lcos and mems systems ? small 9-ball optical chip scale package (ocsp) (2.2mmx2.2mm) ? glass top package compatible with near uv and blue lds ? intersil 3-wire spi interface applications ? optical power monitoring ? laser based/led based pico-projectors ? laser based/led based projection tv get full datasheet horizontal & vertical position detection horizontal & vertical driver vertical horizontal mems digital controller h pos v pos mems h&v driver power converter laser diode driver clk power converter digital circuits pixel data (rgb) video front end & video processor 3.3v 2.5v 1.8v 1.2v 5.0v mcu raster scan image optic feedback oeic ISL58344 figure 1. application block diagram march 11, 2011 fn7524.0 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | copyright intersil americas inc. 2011. 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.
ISL58344 2 intersil products are manufactured, assembled and tested utilizing iso9000 quality systems as noted in the quality certifications found at www.intersil.com/design/quality intersil products are sold by description only. intersil corporat ion 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 furnished by intersil is believed to be accurate and reliable. however, no responsi bility is assumed by intersil or its subsid iaries for its use; nor for any infringem ents 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 i ntersil or its subsidiaries. for information regarding intersil corporation and its products, see www.intersil.com fn7524.0 march 11, 2011 for additional products, see www.intersil.com/product_tree
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