BH1745NUC IC Datasheet

BH1745NUC Datasheet PDF, Equivalent


Part Number

BH1745NUC

Description

Color Sensor IC

Manufacture

ROHM

Total Page 22 Pages
Datasheet
Download BH1745NUC Datasheet


BH1745NUC
Datasheet
Ambient light sensor ICs
Digital 16bit Serial Output Type
Color Sensor IC
BH1745NUC
General Description
BH1745NUC is digital color sensor IC with I2C bus
interface. This IC senses Red, Green and Blue light
(RGB) and converts them to digital values. The high
sensitivity, wide dynamic range and excellent Ircut
characteristics makes this IC the most suitable to obtain
the illuminance and color temperature of ambient light
for adjusting LCD backlight of TV, mobile phone and
tablet PC. It is possible to detect very wide range light
intensity. (0.005 40k lx)
Key Specifications
VCC Voltage Range:
Maximum Sensitivity:
Current Consumption:
Standby Mode Current:
Operating Temperature Range:
2.3V to 3.6V
0.005Lx/step
130μA (Typ)
0.8μA (Typ)
-40°C to +85°C
Package(s)
WSON008X2120
W(Typ) x D(Typ) x H(Max)
2.10mm x 2.00mm x 0.6mm
Features
The Excellent Ircut Characteristics with an Ircut Filter
The High Sensitivity and Wide Dynamic Range
(0.005 40k lx)
Supports Low Transmittance (Dark) Window
Correspond to I2C Bus Interface ( f/s mode support )
Low Current by Power Down Function
Rejecting 50Hz/60Hz Light Noise
Correspond to 1.8V Logic Interface
Programmable Interrupt Function
It is possible to select 2 type of I2C bus slave address.
(ADDR =L: 0111000, ADDR =H: 0111001)
Applications
LCD TV, Mobile phone, NOTE PC, Tablet PC, Portable
game machine, Digital camera, Digital video camera,
PDA, LCD display
WSON008X2120
Typical Application Circuits
2.3V 3.6V
(ex. 0.1µF)
VCC
1.8V 3.6V
ADC
ADC
ADC
ADC Logic
+
I2C Interface
+
INT Interface
ADC
OSC
GND
POR
SDA
SDA
SCL
SCL
1.65V 5.5V
INT
INT
ADDR
ADDR
TEST
TEST
Micro
Controller
or
Baseband
Processor
Product structureSilicon monolithic integrated circuit.
This product is not designed protection against radioactive rays.
This product does not include laser transmitter.
This product does not include optical load.
This product includes Photo detector, ( Photo Diode ) inside of it.
.www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
1/19
TSZ02201-0M3M0F616080-1-2
23.May.2016 Rev.002

BH1745NUC
BH1745NUC
Pin Configuration
Pin Description
Pin No.
1
2
3
4
5
6
7
8
Block Diagram
Pin Name
ADDR
VCC
GND
TEST
SCL
SDA
INT
NC
TOP VIEW
ADDR
VCC
1
2
GND 3
TEST 4
8 NC
7 INT
6 SDA
5 SCL
Function
I2C bus slave address terminal
Power supply terminal
GND terminal
Test terminal. Connect to GND.
I2C bus Interface SCL terminal.
I2C bus Interface SDA terminal.
Nch open drain output.
Interrupt setting is defined by internal register. Register value is
possible to configure by I2C bus.
Non connect (Open).
VCC
ADC
PD
ADC
PD
ADC
PD
ADC Logic
+
I2C Interface
+
INT Interface
ADC
PD
OSC
POR
GND
Description of Blocks
Ircut Filter
This filter passes visible light and blocks infrared light.
RED, GREEN, BLUE, CLEAR
Red, Green, Blue, and Clear color pass filter
PD
Photodiodes (PD) convert light into current.
ADC
AD converter for obtaining digital 16bit data.
ADC Logic + I2C Interface + INT Interface
ADC control logic and I2C bus Interface and Interrupt function Interface.
OSC
Internal oscillator (typ 720 kHz). It is clock for internal logic.
POR
Power on reset. All registers are reset after VCC is supplied.
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/19
SDA
SCL
INT
ADDR
TEST
TSZ02201-0M3M0F616080-1-2
23.May.2016 Rev.002


Features Datasheet Ambient light sensor ICs Digi tal 16bit Serial Output Type Color Sens or IC BH1745NUC General Description B H1745NUC is digital color sensor IC wit h I2C bus interface. This IC senses Red , Green and Blue light (RGB) and conver ts them to digital values. The high sen sitivity, wide dynamic range and excell ent Ircut characteristics makes this IC the most suitable to obtain the illumi nance and color temperature of ambient light for adjusting LCD backlight of TV , mobile phone and tablet PC. It is pos sible to detect very wide range light i ntensity. (0.005 – 40k lx) Key Speci fications  VCC Voltage Range:  Ma ximum Sensitivity:  Current Consumpt ion:  Standby Mode Current:  Oper ating Temperature Range: 2.3V to 3.6V 0.005Lx/step 130μA (Typ) 0.8μA (Typ) -40°C to +85°C Package(s) WSON008X21 20 W(Typ) x D(Typ) x H(Max) 2.10mm x 2 .00mm x 0.6mm Features  The Excelle nt Ircut Characteristics with an Ircut Filter  The High Sensitivity and Wide Dynamic Range (0.005 – 40k lx)  Supports .
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