 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Ambient Light Sensor IC Series Digital 16bit Serial Output Type Ambient Light Sensor IC BH1750FVI No.10046ECT01 Descriptions 2 BH1750FVI is an digital Ambient Light Sensor IC for I C bus interface. This IC is the most suitable to obtain the ambient light data for adjusting LCD and Keypad backlight power of Mobile phone. It is possible to detect wide range at High resolution. ( 1 - 65535 lx ). Features 2 1) I C bus Interface ( f / s Mode Support ) 2) Spectral responsibility is approximately human eye response 3) Illuminance to Digital Converter 4) Wide range and High resolution. ( 1 - 65535 lx ) 5) Low Current by power down function 6) 50Hz / 60Hz Light noise reject-function 7) 1.8V Logic input interface 8) No need any external parts 9) Light source dependency is little. ( ex. Incandescent Lamp. Fluorescent Lamp. Halogen Lamp. White LED. Sun Light ) 2 10) It is possible to select 2 type of I C slave-address. 11) Adjustable measurement result for influence of optical window ( It is possible to detect min. 0.11 lx, max. 100000 lx by using this function. ) 12) Small measurement variation (+/- 20%) 13) The influence of infrared is very small. Applications Mobile phone, LCD TV, NOTE PC, Portable game machine, Digital camera, Digital video camera, Car navigation, PDA, LCD display Absolute Maximum Ratings Parameter Supply Voltage Operating Temperature Storage Temperature SDA Sink Current Power Dissipation Symbol Vmax Topr Tstg Imax Pd Limits 4.5 -4085 -40100 7 260 Units V mA mW 70mm x 70mm x 1.6mm glass epoxy board. Derating in done at 3.47mW/ for operating above Ta=25. Operating Conditions Parameter VCC Voltage I C Reference Voltage 2 Symbol Vcc VDVI Min. 2.4 1.65 Typ. 3.0 - Max. 3.6 VCC Units V V www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 1/17 2010.04 - Rev.C BH1750FVI Electrical Characteristics ( VCC = 3.0V, DVI = 3.0V, Ta = 25, unless otherwise noted ) Parameter Supply Current Powerdown Current Peak Wave Length Measurement Accuracy Dark ( 0 lx ) Sensor out H-Resolution Mode Resolution L-Resolution Mode Resolution H-Resolution Mode Measurement Time L-Resolution Mode Measurement Time Incandescent / Fluorescent Sensor out ratio ADDR Input `H' Voltage ADDR Input `L' Voltage DVI Input `L' Voltage SCL, SDA Input `H' Voltage 1 SCL, SDA Input `H' Voltage 2 SCL, SDA Input `L' Voltage 1 SCL, SDA Input `L' Voltage 2 SCL, SDA, ADDR Input `H' Current SCL, SDA, ADDR Input `L' Current I2C SCL Clock Frequency I2C Bus Free Time I C Hold Time ( repeated ) START Condition I2C Set up time for a Repeated START Condition I2C Set up time for a Repeated STOP Condition I2C Data Hold Time I C Data Setup Time I C `L' Period of the SCL Clock I C `H' Period of the SCL Clock I C SDA Output `L' Voltage 2 2 2 2 2 Technical Note Symbol Icc1 Icc2 p S/A S0 rHR rLR tHR tLR rIF VAH VAL VDVL VIH1 VIH2 VIL1 VIL2 IIH IIL fSCL tBUF tHDSTA tSUSTA tSUSTD tHDDAT tSUDAT tLOW tHIGH VOL Min. 0.96 0 0.7 * VCC 0.7 * DVI 1.26 1.3 0.6 0.6 0.6 0 100 1.3 0.6 0 Typ. 120 0.01 560 1.2 0 1 4 120 16 1 Max. 190 1.0 1.44 3 180 24 0.3 * VCC 0.4 0.3 * DVI DVI - 1.26 10 10 400 0.9 0.4 Units A A nm times count lx lx ms ms times V V V V V V V A A kHz s s s s s ns s s V Conditions Ev = 100 lx 1 No input Light Sensor out / Actual lx EV = 1000 lx 1, 2 H-Resolution Mode 3 EV = 1000 lx DVI 1.8V 1.65V DVI 1.8V DVI 1.8V 1.65V DVI 1.8V IOL = 3 mA 1 White LED is used as optical source. 2 Measurement Accuracy typical value is possible to change '1' by "Measurement result adjustment function". 3 Use H-resolution mode or H-resolution mode2 if dark data ( less than 10 lx ) is need. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 2/17 2010.04 - Rev.C BH1750FVI Reference Data 1.2 Technical Note 64 56 100000 1 Measurement Result 0.8 40 32 24 16 8 0 Measurement Result 48 10000 1000 Ratio 0.6 H-Res. H-Res. L-Res. 100 0.4 10 0.2 L-Res. 1 0 8 16 24 32 40 48 56 64 1 10 100 1000 10000 100000 0 400 500 600 700 800 900 1000 1100 Wavelength [ nm ] Illuminance [ lx ] Illuminance [ lx ] Fig.1 Spectral Response 1.2 Fig.2 Illuminance Measurement Result 1 1.2 1 10 Fig.3 Illuminance Measuremnet Result 2 1 8 1pin 0.8 0.8 Ratio - + Measurement Result Ratio 0.6 0.4 - 6 0.6 - 1pin 4 0.4 0.2 + 0.2 0 + + 2 H-Res. 60 90 0 -90 -60 -30 0 Angle [ deg ] -90 30 60 90 -60 -30 0 30 0 -40 -20 0 20 40 60 80 100 Angle [ deg ] Ta [ ] Fig.4 Directional Characteristics 1 1.2 1 0.8 Fig.5 Directional Characteristics 2 Fluorescent Light Fig.6 Dark Response 200 Ratio 0.6 0.4 0.2 0 -40 -20 0 20 40 60 80 100 Halogen Light Kripton Light Artifical Sun Light White LED 0 0.5 1 1.5 2 ICC @ Measurement Incandescent Light 150 100 50 0 Ratio 2 2.5 Ta [ ] 3 VCC [ V ] 3.5 4 Fig.7 Measurement Accuracy Temperature Dependency 10 Fig.8 Light Source Dependency ( Fluorescent Light is set to '1' ) 1.2 Fig.9 VCC - ICC ( During measurement ) 1.2 ICC @ POWER DOWN [ uA ] 1 1 1 DVI=1.8V 0.8 VCC=3V 0.8 Ratio 0.6 Ratio 2 2.5 3 3.5 4 0.6 0.1 0.4 0.4 0.2 0.2 0.01 -40 -20 0 20 40 60 80 100 0 0 Ta [ ] VCC [ V ] 1.5 2 DVI [ V ] 2.5 3 3.5 Fig.10 VCC - ICC@0 Lx ( POWER DOWN ) Fig.11 Measurement Result VCC Dependency Fig.12 Measurement Result DVI Dependency www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 3/17 2010.04 - Rev.C BH1750FVI Block Diagram VCC DVI Technical Note AMP ADC Logic + I C Interface 2 SCL SDA PD OSC GND Block Diagram Descriptions PD Photo diode with approximately human eye response. AMP Integration-OPAMP for converting from PD current to Voltage. ADC AD converter for obtainment Digital 16bit data. 2 Logic + I C Interface Ambient Light Calculation and I2C BUS Interface. It is including below register. Data Register This is for registration of Ambient Light Data. Initial Value is "0000_0000_0000_0000". Measurement Time Register This is for registration of measurement time. Initial Value is "0100_0101". OSC Internal Oscillator ( typ. 320kHz ). It is CLK for internal logic. Measurement Procedure Power supply State is automatically changed to Power Down mode. Power Down Initial state is Power Down mode after VCC and DVI supply. ADDR Power On Measurement Command One Time Measurement Continuous Measurement State Transition by I2C write-command. Automatically State Transition * "Power On" Command is possible to omit. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 4/17 2010.04 - Rev.C BH1750FVI Instruction Set Architecture Instruction Power Down Power On Reset Continuously H-Resolution Mode Continuously H-Resolution Mode2 Continuously L-Resolution Mode One Time H-Resolution Mode Opecode 0000_0000 0000_0001 0000_0111 0001_0000 0001_0001 0001_0011 0010_0000 No active state. Waiting for measurement command. Comments Technical Note One Time H-Resolution Mode2 0010_0001 One Time L-Resolution Mode Change Measurement time ( High bit ) Change Masurement time ( Low bit ) Don't input the other opecode. 0010_0011 01000_MT[7,6,5] 011_MT[4,3,2,1,0] Reset Data register value. Reset command is not acceptable in Power Down mode. Start measurement at 1lx resolution. Measurement Time is typically 120ms. Start measurement at 0.5lx resolution. Measurement Time is typically 120ms. Start measurement at 4lx resolution. Measurement Time is typically 16ms. Start measurement at 1lx resolution. Measurement Time is typically 120ms. It is automatically set to Power Down mode after measurement. Start measurement at 0.5lx resolution. Measurement Time is typically 120ms. It is automatically set to Power Down mode after measurement. Start measurement at 4lx resolution. Measurement Time is typically 16ms. It is automatically set to Power Down mode after measurement. Change measurement time. Please refer "adjust measurement result for influence of optical window." Change measurement time. Please refer "adjust measurement result for influence of optical window." Measurement mode explanation Measurement Mode Measurement Time. H-resolution Mode2 H-Resolution Mode L-Resolution Mode Typ. 120ms. Typ. 120ms. Typ. 16ms. Resolurtion 0.5 lx 1 lx. 4 lx. We recommend to use H-Resolution Mode. Measurement time ( integration time ) of H-Resolution Mode is so long that some kind of noise( including in 50Hz / 60Hz noise ) is rejected. And H-Resolution Mode is 1 l x resolution so that it is suitable for darkness ( less than 10 lx ) H-resolution mode2 is also suitable to detect for darkness. Explanation of Asynchronous reset and Reset command "0000_0111" 1) Asynchronous reset All registers are reset. It is necessary on power supply sequence. Please refer "Timing chart for VCC and DVI power supply sequence" in this page. It is power down mode during DVI = 'L'. 2) Reset command Reset command is for only reset Illuminance data register. ( reset value is '0' ) It is not necessary even power supply sequence.It is used for removing previous measurement result. This command is not working in power down mode, so that please set the power on mode before input this command. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 5/17 2010.04 - Rev.C BH1750FVI Technical Note Timing chart for VCC and DVI power supply sequence DVI is I2C bus reference voltage terminal. And it is also asynchronous reset terminal. It is necessary to set to 'L' supplied. In DVI 'L' term, internal state is set to Power Down mode. 1) Recommended Timing chart1 for VCC and DVI supply. after VCC is VCC DVI Reset Term ( more than 1us ) 2) Timing chart2 for VCC and DVI supply. ( If DVI rises within 1s after VCC supply ) VCC DVI Reset Term ( more than 1us ) Don't care state ADDR, SDA, SCL is not stable if DVI 'L' term ( 1us ) is not given by systems. In this case, please connect the resisters ( approximately 100kOhm ) to ADDR without directly connecting to VCC or GND, because it is 3 state buffer for Internal testing. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 6/17 2010.04 - Rev.C BH1750FVI Measurement sequence example from "Write instruction" to "Read measurement result" ex1) Continuously H-resolution mode ( ADDR = 'L' ) from Master to Slave from Slave to Master Technical Note Send "Continuously H-resolution mode " instruction ST 0100011 0 Ack 00010000 Ack SP Wait to complete 1st H-resolution mode measurement.( max. 180ms. ) Read measurement result. ST 0100011 1 Ack High Byte [ 15:8 ] Ack Low Byte [ 7:0 ] Ack SP How to calculate when the data High Byte is "10000011" and Low Byte is "10010000" ( 215 + 29 + 28 + 27 + 24 ) / 1.2 28067 [ lx ] The result of continuously measurement mode is updated.( 120ms.typ at H-resolution mode, 16ms.typ at L-resolution mode ) ex2 ) One time L-resolution mode ( ADDR = 'H' ) Send "One time L-resolution mode " instruction ST 1011100 0 Ack 00100011 Ack SP Wait to complete L-resolution mode measurement.( max. 24ms. ) Read measurement result ST 1011100 1 Ack High Byte [ 15:8 ] Ack Low Byte [ 7:0 ] Ack SP How to calculate when the data High Byte is "00000001" and Low Byte is "00010000" 8 4 ( 2 + 2 ) / 1.2 227 [ lx ] In one time measurement, Statement moves to power down mode after measurement completion.If updated result is need then please resend measurement instruction. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 7/17 2010.04 - Rev.C BH1750FVI Technical Note Application circuit example of DVI terminal The DVI terminal is an asynchronous reset terminal. Please note that there is a possibility that IC doesn't operate normally if the reset section is not installed after the start-up of VCC. (Please refer to the paragraph of "Timing chart for VCC and DVI power supply sequence" ) The description concerning SDA and the terminal SCL is omitted in this application circuit example. Please design the application the standard of the I2C bus as it finishes being satisfactory. Moreover, the description concerning the terminal ADDR is omitted. Please refer to the paragraph of "Timing chart for VCC and DVI power supply sequence" about the terminal ADDR design. ex 1) The control signal line such as CPU is connected. BH1750FVI VCC 0.1F ADDR GND SCL DVI SDA 0.1F Micro Controller ex 2) Reset IC is used. 1, For Reset IC of the Push-Pull type BH1750FVI VCC 0.1F ADDR GND SCL DVI SDA Reset IC( Push-Pull type ) 0.1F RESET 2, For Reset IC of the Open drain output BH1750FVI VCC 0.1F ADDR GND SCL DVI SDA Reset IC( Open drain type ) 0.1F RESET 1kOhm ex 3) A different power supply is used. VCC 0.1F V1 ADDR GND BH1750FVI SCL DVI SDA V2 0.1F Power supply of DVI must stand up later than power supply of VCC stand up, because it is necessary to secure reset section ( 1s or more ). www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 8/17 2010.04 - Rev.C BH1750FVI Technical Note ex 4) LPF using CR is inserted between VCC and DVI. This method has the possibility that the Reset section of turning on the power supply can not satisfied. cannot be satisfied. Please design the set considering the characteristic of the power supply enough. R1 : 1kOhm BH1750FVI VCC 0.1F ADDR GND SCL DVI SDA C1 : 1F Notes when CR is inserted between VCC and DVI Please note that there is a possibility that reset section ( 1s ) can not be satisfied because the power supply is turned on when the rise time of VCC is slow When VCC is turned off, the DVI voltage becomes higher than VCC voltage but IC destruction is not occred if recommended constant ( R1 = 1kOhm, C1 = 1F ) is used. Please note that there is a possibility that Reset section (1sec) cannot be satisfied if wait time is not enough long after turning off VCC. (It is necessary to consider DVI voltage level after turning off VCC.) t1 t2 2.4V VCC DVI 0.4V Reset Section : 1us or more 0V * Please do the application design to secure Reset section 1us or more after the reclosing of the power supply. Example of designing set when CR ( C = 1F, R = 1k ) is inserted between VCC and DVI with VCC=2.8V The rise time to 02.4V of VCC must use the power supply of 100s or less. Please wait 25ms or more after VCC turn off ( VCC <= 0.05V ), because it is necessary to secure reset section ( 1s or more ). Rise time of power supply : 100us or less 2.8V Time to power supply reclosing : 25ms or more VCC DVI 2.4V 0.4V 0V 0.05V Reset Section : 1us or more * Please do the application design to secure Reset section 1us or more after the reclosing of the power supply. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 9/17 2010.04 - Rev.C BH1750FVI Technical Note I2C Bus Access 1 ) I2C Bus Interface Timing chart 2 Write measurement command and Read measurement result are done by I C Bus interface. Please refer the formally 2 specification of I C Bus interface, and follow the formally timing chart. SDA tf SCL tHD ; STA S S tHD ; DAT tSU ; STA tHIGH t Sr tSU;STO P S S tr tLOW tSU ; DAT tf tHD ; STA HD tr tBUF 2) Slave Address Slave Address is 2 types, it is determined by ADDR Terminal ADDR = `H' ( ADDR 0.7VCC ) "1011100" ADDR = 'L' ( ADDR 0.3VCC ) "0100011" 3 ) Write Format BH1750FVI is not able to accept plural command without stop condition. Please insert SP every 1 Opecode. Slave Address R/W 0 Ack ST Opecode Ack SP 4 ) Read Format ST Slave Address R/W 1 Ack High Byte [15:8] 214 213 212 211 210 29 28 Ack 2 15 2 7 26 Low Byte [7:0] 25 24 23 22 21 20 Ack SP from Master to Slave ex ) High Byte = "1000_0011" Low Byte = "1001_0000" 15 9 8 7 4 ( 2 + 2 + 2 + 2 + 2 ) / 1.2 28067 [ lx ] * I2C BUS is trademark of Phillips Semiconductors. Please refer formality specification. from Slave to Master www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 10/17 2010.04 - Rev.C BH1750FVI Technical Note Adjust measurement result for influence of optical window. ( sensor sensitivity adjusting ) BH1750FVI is possible to change sensor sensitivity. And it is possible to cancel the optical window influence ( difference with / without optical window ) by using this function. Adjust is done by changing measurement time. For example, when transmission rate of optical window is 50% ( measurement result becomes 0.5 times if optical window is set ), influence of optical window is ignored by changing sensor sensitivity from default to 2 times Sensor sensitivity is shift by changing the value of MTreg ( measurement time regisiter ). MTreg value has to set 2 times if target of sensor sensitivity is 2 times. Measurement time is also set 2 times when MTreg value is changed from default to 2 times. ex) Procedure for changing target sensor sensitivity to 2 times. Please change Mtreg from "0100_0101" ( default ) to "1000_1010" ( default * 2 ). 1) Changing High bit of MTreg ST Slave Address R/W 0 Ack 01000_100 Ack SP 2) Changing Low bit of MTreg ST Slave Address R/W 0 Ack 011_01010 Ack SP 3) Input Measurement Command ST Slave Address R/W 0 Ack 0001_0000 Ack SP * This example is High Resolution mode, but it accepts the other measurement. 4) After about 240ms, measurement result is registered to Data Register. ( High Resolution mode is typically 120ms, but measurement time is set twice. ) The below table is seeing the changable range of MTreg. Min. 0001_1111 ( sensitivity : default * 0.45 ) 31 ( sensitivity : default * 0.45 ) Typ. 0100_0101 default 69 default Max. 1111_1110 ( sensitivity : default * 3.68 ) 254 ( sensitivity : default * 3.68 ) changable range of MTreg binary decimal It is possilbe to detect 0.23lx by using this function at H-resolution mode. And it is possilbe to detect 0.11lx by using this function at H-resolution mode2. The below formula is to calculate illuminance per 1 count. H-reslution mode : Illuminance per 1 count ( lx / count ) = 1 / 1.2 *( 69 / X ) H-reslution mode2 : Illuminance per 1 count ( lx / count ) = 1 / 1.2 *( 69 / X ) / 2 1.2 : Measurement accuracy 69 : Default value of MTreg ( dec ) X : MTreg value The below table is seeing the detail of resolution. Mtreg 0001_1111 0100_0101 1111_1110 lx / count at H-resolutin mode 1.85 0.83 0.23 lx / count at H-resolution mode2 0.93 0.42 0.11 www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 11/17 2010.04 - Rev.C BH1750FVI Technical Note H-Resolution Mode2 H-resolution mode2 is 0.5lx ( typ. ) resolution mode. It is suitable if under less than 10 lx measure ment data is necessary. This measurement mode supports " Adjust measurement result for influence of optical window ". Please refer it. It is possible to detect min. 0.11 lx by using H-resolution mode2. Instruction set architecture for H-resolution mode2 Instruction Opecode Continuously H-Resolution Mode2 0001_0001 One Time H-Resolution Mode2 0010_0001 Comments Start measurement at 0.5lx resolution. Measurement Time is typically 120ms. Start measurement at 0.5lx resolution. Measurement Time is typically 120ms. It is automatically set to Power Down mode after measurement. Measurement sequence example from "Write instruction" to "Read measurement result" ex) Continuously H-resolution mode2 ( ADDR = 'L' ) from Master to Slave from Slave to Master Send "Continuously H-resolution mode2 " instruction ST 0100011 0 Ack 00010001 Ack SP Wait to complete 1st H-resolution mode2 measurement.( max. 180ms. ) Read measurement result. ST 0100011 1 Ack High Byte [15:8] 214 213 212 211 210 29 28 27 Ack 26 25 Low Byte [7:0] 24 23 22 21 20 2-1 Ack SP How to calculate when the data High Byte is "00000000" and Low Byte is "00010010" ( 23+ 20 ) / 1.2 7.5 [ lx ] www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 12/17 2010.04 - Rev.C BH1750FVI Terminal Description PIN No. Terminal Name Technical Note Equivalent Circuit Function 1 VCC Power Supply Terminal VCC 2 ADDR I C Slave-address Terminal ADDR = `H' ( ADDR 0.7VCC ) "1011100" ADDR = 'L' ( ADDR 0.3VCC ) "0100011" ADDR Terminal is designed as 3 state buffer for internal test. So that please take care of VCC and DVI supply procedure.Please see P6. 2 3 GND GND Terminal 4 SDA I2C bus Interface SDA Terminal 5 DVI 150k SDA, SCL Reference Voltage Terminal And DVI Terminal is also asynchronous Reset for internal registers.So that please set to 'L' ( at least 1s, DVI <= 0.4V ) after VCC is supplied. BH1750FVI is pulled down by 150kOhm while DVI = 'L'. 6 SCL I2C bus Interface SCL Terminal These values are design-value, not guaranteed. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 13/17 2010.04 - Rev.C BH1750FVI Package Outlines Technical Note Lot No. A A Product No. WSOF6I ( Unit : mm ) About an optical design on the device 0.8 mm 1.3 mm Min.0.4 mm Min.0.4 mm PD area ( 0.25 mm x 0.3 mm ) Please design the optical window so that light can cover at least this area. Min.0.4 mm Min.0.4 mm www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 14/17 2010.04 - Rev.C BH1750FVI The method of distinguishing 1pin. There is some method of distinguishing 1pin. Distinguishing by 1Pin wide-lead Distinguishing by die pattern Distinguishing by taper part of 1-3pin side (by die patern) is the easiest method to distinguish by naked eye. Technical Note A A Production code www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 15/17 2010.04 - Rev.C BH1750FVI Cautions on use Technical Note 1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage ( Vmax ), temperature range of operating conditions ( Topr ), etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc. 2) GND voltage Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state. Furthermore, check to be sure no terminals are at a potential lower than the GND voltage including an actual electric transient. 3) Short circuit between terminals and erroneous mounting In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between terminals or between the terminal and the power supply or the GND terminal, the ICs can break down. 4) Operation in strong electromagnetic field Be noted that using ICs in the strong electromagnetic field can malfunction them. 5) Inspection with set PCB On the inspection with the set PCB, if a capacitor is connected to a low-impedance IC terminal, the IC can suffer stress. Therefore, be sure to discharge from the set PCB by each process. Furthermore, in order to mount or dismount the set PCB to/from the jig for the inspection process, be sure to turn OFF the power supply and then mount the set PCB to the jig. After the completion of the inspection, be sure to turn OFF the power supply and then dismount it from the jig. In addition, for protection against static electricity, establish a ground for the assembly process and pay thorough attention to the transportation and the storage of the set PCB. 6) Input terminals In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the input terminal. Therefore, pay thorough attention not to handle the input terminals; such as to apply to the input terminals a voltage lower than the GND respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to the input terminals when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is applied, apply to the input terminals a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics. 7) Thermal design Perform thermal design in which there are adequate margins by taking into account the power dissipation ( Pd ) in actual states of use. 8) Treatment of package Dusts or scratch on the photo detector may affect the optical characteristics. Please handle it with care. 9) Rush current When power is first supplied to the CMOS IC, it is possible that the internal logic may be unstable and rush current may flow instantaneously. Therefore, give special consideration to power coupling capacitance, power wiring, width of GND wiring, and routing of connections. 10) The exposed central pad on the back side of the package There is an exposed central pad on the back side of the package. But please do it non connection. ( Don't solder, and don't do electrical connection ) Please mount by Footprint dimensions described in the Jisso Information for WSOF6I. This pad is GND level, therefore there is a possibility that LSI malfunctions and heavy-current is generated. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 16/17 2010.04 - Rev.C BH1750FVI Ordering part number Technical Note B H 1 Part No. 7 5 0 F V I - T R Part No. Package FVI: WSOF6I Packaging and forming specification TR: Embossed tape and reel WSOF6I 1.6 0.1 (MAX1.8 include BURR) 0.5 0.5 6 5 4 Tape 0.3 4 5 Embossed carrier tape 3000pcs TR The direction is the 1pin of product is at the upper right when you hold 0.3 6 Quantity Direction of feed 2.6 0.1 (MAX2.8 include BURR) (0.45) 3.0 0.1 (0.15) (1.2) (1.4) 3 2 1 (1.5) ( reel on the left hand and you pull out the tape on the right hand 1pin ) 1 2 3 0.525 0.5 S 0.3 0.275 0.75MAX 0.145 0.05 0.27 0.05 0.08 S 0.22 0.05 0.08 M Direction of feed (Unit : mm) Reel Order quantity needs to be multiple of the minimum quantity. www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. 17/17 2010.04 - Rev.C Notice 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 Products. 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, communication 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, fuelcontroller 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. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved. R1010A |
Price & Availability of BH1750FVI-TR
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |