EVAL.BH1721FVC Rohm Semiconductor, EVAL.BH1721FVC Datasheet

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Ambient Light Sensor IC Series Digital 16bit Serial Output Type Ambient Light Sensor IC BH1721FVC ●Descriptions BH1721FVC is an digital Ambient Light Sensor IC for I light data for adjusting LCD and Keypad backlight power of Mobile phone ...

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BH1721FVC ●Electrical Characteristics ( VCC = 3.0V, DVI = 3.0V 25℃, unless otherwise noted ) Parameter Supply Current Powerdown Current Peak Wave Length Measurement Accuracy Dark ( Sensor out H-Resolution Mode Resolution L-Resolution Mode Resolution ...

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BH1721FVC ●Reference Data 1.2 1.0 0.8 0.6 0.4 0.2 0.0 400 500 600 700 800 900 1000 1100 Wavelength [ nm ] Fig.1 Spectral Response 1.2 1 1pin 0 0.6 0 0.2 0 -90 -60 ...

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BH1721FVC ●Block Diagram PD ●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 ...

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BH1721FVC ●Instruction Set Architecture Instruction Power Down Power On Continuously Auto-Resolution Mode Continuously H-Resolution Mode Continuously L-Resolution Mode Change Measurement time ( High bit ) Change Masurement time ( Low bit ) ※ Don't input the other opecode. ●Measurement mode ...

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BH1721FVC ●Timing chart for VCC and DVI power supply sequence 2 DVI bus reference voltage terminal. And it is also asynchronous reset terminal necessary to set to ‘L’ after VCC is supplied. In DVI 'L' ...

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BH1721FVC ●Measurement sequence example from "Write instruction" to "Read measurement result" ex1) Continuously Auto-resolution mode from Master to Slave ① Send "Continuously Auto-resolution mode " instruction ST 0100011 ② Wait to complete 1st Auto-resolution mode measurement.( max. 180ms ) ③ ...

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BH1721FVC ●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 ...

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BH1721FVC 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 ...

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BH1721FVC 2 ●I C Bus Access Bus Interface Timing chart Write measurement command and Read measurement result are done specification Bus interface, and follow the formally timing chart. SDA ...

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BH1721FVC ●Adjust measurement result for influence of optical window. (sensor sensitivity adjusting ) BH1721FVC 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. ...

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BH1721FVC ●Terminal Description PIN Terminal Name No. 1 VCC 2 GND 3 SDA 4 DVI 5 SCL ※These values are design-value, not guaranteed. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Equivalent Circuit Power Supply Terminal GND Terminal 2 ...

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BH1721FVC ●Package Outlines A E Production Lot No. code ●Optical design for the device 0.8 mm Min.0.4 mm Min.0.4 mm Min.0.4 mm Min.0.4 mm www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. WSOF5 (Unit: mm) 0 area ...

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BH1721FVC ●Notes for use 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 ...

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BH1721FVC ●Ordering part number Part No. Part No. WSOF5 1.6±0.05 (0.8) (0.3) 1.0±0. 0.1 S 0.5 0.22±0.05 0.08 M www.rohm.com © 2010 ROHM Co., Ltd. ...

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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 ...