BH1710FVC-TR ROHM

Ambient Light Sensor ICs Digital 16bit Serial Output Type Ambient Light Sensor IC No.11046ECT07 BH1710FVC Descriptions 2 BH1710FVC 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. 0.24 lx, max. 100000 lx by using this function.) Applications Mobile phone, LCD TV, NOTE PC, Portable game machine, Digital camera, Digital video camera, PDA, LCD display Absolute Maximum Ratings Parameter Symbol Ratings Units Supply Voltage Vmax 4.5 V Operating Temperature Topr -3085 Storage Temperature Tstg -40100 SDA 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 Ratings Parameter Symbol Units Min. Typ. Max. V Voltage V 2.4 3.0 3.6 V CC CC 2 I C Reference Voltage V 1.65 V V DVI CC www.rohm.com 2011.11 - Rev.C 1/16 2011 ROHM Co., Ltd. All rights reserved. Technical Note BH1710FVC Electrical Characteristics(V = 3.0V, DVI = 3.0V, Ta = 25, unless otherwise noted) CC Limits Parameter Symbol Units Conditions Min. Typ. Max. 1 Supply Current Icc1 190 Ev = 100 lx 120 A Powerdown Current Icc2 0.01 0.2 A No input Light Peak Wave Length p 560 nm Sensor out / Actual lx Measurement Accuracy S/A 0.75 1.2 1.65 times 1, 2 EV = 1000 lx 3 S0 0 2 H-Resolution Mode Dark (0 lx) Sensor out 0 count rHR H-Resolution Mode Resolution 1 lx M-Resolution Mode Resolution rMR 4 lx L-Resosution Mode Resolution rLR 32 lx H-Resolution Mode Measurement Time tHR 120 180 ms M-Resolution Mode Measurement Time tMR 16 24 ms L-Resolution Mode Measurementt time tLR 4.5 2.9 ms Incandescent rIF 1 times EV = 1000 lx / Fluorescent Sensor out ratio ADDR Input H Voltage VAH 0.7V CC V ADDR Input L Voltage VAL 0.3V CC V DVI Input L Voltage VDVL 0.4 V SCL, SDA Input H Voltage 1 VIH1 0.7DVI V DVI 1.8V SCL, SDA Input H Voltage 2 VIH2 1.26 V 1.65VDVI1.8V SCL, SDA Input L Voltage 1 VIL1 0.3DVI V DVI 1.8V SCL, SDA Input L Voltage 2 VIL2 DVI-1.26 1.65VDVI1.8V V SCL, SDA, ADDR Input H Current IIH 10 A SCL, SDA, ADDR Input L Current IIL 10 A 2 I C SDA Output L Voltage VOL 0 0.4 V IOL = 3 mA 2 I C SCL Clock Frequency fSCL 400 kHz 2 I C Hold Time (repeated) tHDSTA 0.6 s START Condition 2 I C L Period of the SCL Clock tLOW 1.3 s 2 I C H Period of the SCL Clock tHIGH 0.6 s 2 I C Set up time for a Repeated tSUSTA 0.6 s START Condition 2 I C Data Hold Time tHDDAT 0 0.9 s 2 I C Data Setup Time tSUDAT 100 ns 2 I C Set up Time for STOP Condition tSUSTO 0.6 s 2 I C Bus Free Time between a tBUF 1.3 s STOP and START Condition 1 White LED is used as optical source. 2 Measurement Accuracy typical value is possible to change 1 byMeasurement result adjustment functio. 3 Use H-Resolution Mode if dark data (less than 10 lx) is need. www.rohm.com 2011.11 - Rev.C 2/16 2011 ROHM Co., Ltd. All rights reserved.