BH1721FVC-TR Rohm Semiconductor, BH1721FVC-TR Datasheet - Page 4

• Manufacturer Part Number: BH1721FVC-TR
• Description: Industrial Optical Sensors Ambient Light Sensor Digital 16bit Serial
• Manufacturer: Rohm Semiconductor
• Type: Ambient Light Sensor with Digital Outputr

Specifications of BH1721FVC-TR

• Product: Ambient Light Sensor
• Wavelength: 560nm
• Output Type: I²C™
• Package / Case: SOT-665
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

●Block Diagram
●Block Diagram Descriptions
●Measurement Procedure
© 2010 ROHM Co., Ltd. All rights reserved.
BH1721FVC
www.rohm.com
・PD
・AMP
・ADC
・Logic + I
・OSC
Continuous measurement
Measurement command
Photo diode with approximately human eye response.
Integration-OPAMP for converting from PD current to Voltage.
AD converter for obtainment Digital 16bit data.
Ambient Light Calculation and I
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 "01_0010_1100".
Internal Oscillator. It is CLK for internal logic.
Power supply
Power Down
Power On
2
C Interface
PD
Initial state is Power Down mode after
VCC and DVI supply.
2
AMP
C BUS Interface. It is including below register.
ADC
OSC
VCC
GND
4/15
I
2
C Interface
Logic
DVI
+
State Transition by I
Automatically State Transition
* "Power On" Command is possible to omit.
2
SCL
SDA
C write-command.
Technical Note
2010.02 - Rev.A