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| BH1730FVC 1/20 www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. ambient light sensor ics digital 16bit serial output type ambient light sensor ic BH1730FVC descriptions BH1730FVC is a digital ambient light sensor ic for i 2 c bus interface. this ic is the most suitable to obtain the ambient light data for adjusting lcd backlight power of tv, mobile phone. it is possible to detect very wide range light intensity. (0.008 - 65535 lx ). features 1) i 2 c bus interface ( f / s mode support, slave address "0101001". ) 2) there are two outputs that peaks of a spectrum response are in visible light (type0) and in infrared light (type1). 3) illuminance to digital converter 4) very wide range and high resolution. ( 0.008 - 65535 lx ) 5) low current by power down function 6) 50hz / 60hz light noise reject-function 7) correspond to 1.8v logic input interface 8) light source dependency is little by calculating with type0 and type1. ( ex. incandescent lamp. fluorescent lam p. halogen lamp. white led. sun light ) 9) interrupt function is available. 10) adjustable measurement result for influence of optical window ( it is possible to detect min. 0.001 lx, max. 100000 lx by using this function. ) 11) small measurement variation (+/- 15%) 12) built in power on reset circuit. applications lcd tv, mobile phone, note pc, portable game machine, dig ital camera, digital video camera, pda, lcd display absolute maxi mum ratings parameter symbol limits units supply voltage v cc max 4.5 v int , sda, dvi, scl, terminal voltage v int max, v sda max, v dvi max, v scl max 7 v operating temperature topr -40 70 storage temperature tstg -40 100 sda, int sink current imax 7 ma power dissipation pd 260 mw 70mm 70mm 1.6mm glass epoxy board. derating in done at 3.47mw/ for operating above ta=25 . operating conditions parameter symbol min. typ. max. units vcc voltage vcc 2.4 3.0 3.6 v i 2 c reference voltage v dvi 1.65 - v cc v no.11046eat13
technical note 2/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. R Q R Q technical note 3/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. - + - + - + - + technical note 4/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. ? ? ? ? ? ? technical note 5/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. data specified at re gister address field data specified at register address field +1 ??? data specified at register address field +n data specified at register address field ??? data specified at register address field +n ??? technical note 6/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 7/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 8/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 9/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 10/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 11/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. control register 0000_0011 technical note 12/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 13/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. interrupt threshold h level time persistence = 1 master writes ?interrupt output reset? command. sequential measurement results persistence = 2 interrupt threshold l level data0 int terminal h l h l technical note 14/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 15/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 16/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 17/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. a h wsof6 ( unit : mm ) technical note 18/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. a h technical note 19/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. technical note 20/20 BH1730FVC www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. direction of feed reel ? order quantity needs to be multiple of the minimum quantity. r1120 a www.rohm.com ? 2012 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the produc ts. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law. |
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