Optical Proximity Sensor and
Ambient Light Sensor with IrLED
R PR-0 521R S
Datasheet
●
General Description
RPR-0521RS is a module which integrates optical proximity, digital ambient light sensor IC, and infrared LED
(IrLED). Proximity sensor (PS) part detects the human or object approaching by the reflection of IrLED light.
Ambient light sensor (ALS) part detects the wide range of illumination; from the dark environment to the direct
sun light. The illuminant intensity of LCD display and keypad can be adjusted by using RPR-0521RS. It enables
lowering current consumption and/or improving the visibility under the bright environment.
●Features
2
1)
Compatible to I C bus interface ( f/s mode support )
2)
Compatible to 1.8V logic interface
3)
Low Current consumption by power down function/mode
4)
There are two ALS outputs; peaks of spectrum responses are in visible light (Data0) and in infrared light
(Data1) for calculating illuminance.
5)
Correspond to very wide range of light intensity
6)
Rejecting 50Hz/60Hz light noise (ALS function)
2
7)
Detection range of proximity sensor is around 1 - 100mm (adjustable by I C)
8)
Built-in current configurable IrLED driver
●
Application
Smart phone, Mobile phone, Digital Still Camera, Portable game, Camcoder, PDA, LCD display etc.
●
Absolute maximum ratings
( Ta = 25℃ )
Symbol
Vddmax
Vsdamax, Vsclmax
Vledamax, Vldrmax, Vintmax
Topr
Tstg
Imax
Limits
4.5
4.5
7
-25½85
-30½85
7
Units
V
V
V
℃
℃
mA
Parameter
VDD Supply Voltage
SDA, SCL Terminal Voltage
LEDA,LDR, INT Terminal Voltage
Operating Temperature
Storage Temperature
INT, SDA Sink Current
●Operating
conditions
Parameter
VDD Supply Voltage
VLEDA Voltage
INT Terminal Voltage
Symbol
Vdd
Vleda
Vint
Min.
2.5
2.8
－
Typ.
3.0
3.0
－
Max.
3.6
5.5
5.5
Units
V
V
V
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RPR-0521RS
●Electrical
characteristics
( VDD= 3.0V, Ta = 25℃, and all registers are default unless otherwise noted. )
Parameter
Symbol
Min.
Typ.
Max.
Units
Supply current for ALS
Supply current for PS
Standby mode current
Calculated Lx
Icc1
Icc2
Icc3
Lx
10
10
0.1
6
90
90
1.0
10
300
200
2.0
14
uA
uA
uA
lx
Datasheet
Conditions
EV = 10 lx
*1
MODE_CONTROL(41h) =89h
MODE_CONTROL(41h) =49h
MODE_CONTROL(41h)=00h,
No input light
EV = 10 lx
*1
MODE_CONTROL(41h)=89h
ALS_PS_CONTROL(42h)=02h
No input light
MODE_CONTROL(41h)=89h
ALS_PS_CONTROL(42h)=02h
No input light
MODE_CONTROL(41h)= 89h
ALS_PS_CONTROL(42h)=02h
MODE_CONTROL(41h)=49h
LED current =100mA
Ambient irradiance = 0uW/cm
2
MODE_CONTROL(41h)=49h
LED current =100mA
MODE_CONTROL(41h)=49h
MODE_CONTROL(41h)=69h
ALS_PS_CONTROL
(42h) <1:0> = “00”
Iint = 3mA
Dark ( 0 lx ) Sensor out in
TYPE0
Dark ( 0 lx ) Sensor out in
TYPE1
PS sensor out ( d=50mm
*2
)
PS sensor out
(No proximity object)
ILED pulse duration 1
ILED pulse duration 2
LDR terminal sink current at
LDR terminal voltage = 1.3V
INT output 'L' Voltage
SCL SDA input 'H' Voltage
SCL SDA input 'L' Voltage
SCL SDA input 'H'/'L'Current
I
2
C SDA Output 'L' Voltage
S0_0
－
－
5
count
S0_1
PS50
PS0
twILED 1
twILED 2
ILED
VINTL
VIH
VIL
IIHL
VOL
－
48
－
80
110
22
0
1.26
－
-10
0
－
80
－
200
330
25
－
－
－
－
5
112
10
300
500
28
0.4
－
0.54
10
0.4
count
count
count
us
us
mA
V
V
V
uA
V
Iol = 3mA
*1 White LED is used as optical source. “Lx” is calculated from ADC count valus.
*2 Measuring Condition
Object
(90% reflective white sheet)
d=50mm
Product
Object: 90% reflective white sheet (50×50mm Kodak Gray Card Plus)
Distance between the object and the product is 50mm. No glass or apertures is above the product.
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RPR-0521RS
●Transmitter
Electrical characteristics ( Ta = 25℃, unless otherwise noted. )
Parameter
LED Forward Voltage
LED Peak Emission Wavelength
Symbol
VF
λp
Min.
－
－
Typ.
1.6
940
Max.
1.95
－
Units
V
nm
Datasheet
Conditions
LED current =100mA
●
I
2
C bus timing characteristics ( VDD= 3.0V, Ta = 25℃, unless otherwise noted. )
Parameter
I C SCL Clock Frequency
I
2
C START Condition Hold Time
I
2
C 'L' Period of the SCL Clock
I
2
C 'H' Period of the SCL Clock
I
2
C S START Condition Set up time
I
2
C Data Hold Time
I
2
C Data Setup Time
I
2
C STOP Condition Set up Time
I
2
C Bus Free Time
I
2
C Data Vaild Time
I
2
C Data Vaild Acknowledge Time
I
2
C bus F/S-mode timing diagram
2
Symbol
f
SCL
t
HD;STA
t
LOW
t
HIGH
t
SU;STA
t
HD;DAT
t
SU;DAT
t
SU;STO
t
BUF
t
VD;DAT
t
VD;ACK
Min.
0
0.6
1.3
0.6
0.6
0
100
0.6
1.3
－
－
Typ.
－
－
－
－
－
－
－
－
－
－
－
Max.
400
－
－
－
－
－
－
－
－
0.9
0.9
Units
kHz
us
us
us
us
us
ns
us
us
us
us
Conditions
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2016.01.28 - Rev.001
RPR-0521RS
Datasheet
●
Package outlines
( φ 1 .1)
( 1.1 3)
( 1. 22 )
(1 .67 )
D et ect or
( 0.8 7)
Emi tt er
3 .94
S
tamp (Month, Day)
1 .81 5
1 .09 5
0 .84 5
0 .12 5
0 .12 5
S
tamp (For the control of our company)
0 .84 5
1 .09 5
1 .81 5
1P IN
PI N
1
1 .0 25
2- SC L
0 .4 25
3- GN D
2
3
4
1- VD D
5 U 8 1 0 4
0 .4 25
1 .0 25
8
7
6
5
1. 35
4- LE DA
5- LE DK
6- LD R
7- IN T
8- SD A
1)
Unit: mm
2) Tolerance shall be ±0.2mm unless otherwise noted.
PIN
Symbol
Description
Number
1
VDD
Supply Voltage
2
SCL
I
2
C Clock, Input
3
GND
Ground
4
LEDA
LED Supply Voltage
5
LEDK
LED Cathode
6
LDR
LED Driver
7
8
INT
SDA
PS or ALS Interrupt Pin, Open Drain
I
2
C Serial Data, Input/Output
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RPR-0521RS
●
Block diagram and block explanation
Datasheet
I
2
C Interface
I2C bus interface. f/s mode. 1.8V interface.
POR
Power on reset function.
OSC
Internal oscillator.
Timing Controller
Internal management block for proximity sensor and ambient light sensor.
PS Control Logic
This block controls proximity sensor ADC.
LED Pulse Gen
LED current generator. LED current can be adjusted by ALS_PS_CONTROL (42h) register.
IrLED Driver.
IrLED driver block.
PD_Visible + Infrared, PD_Infrared
Photo diodes for ambient light sensor.
16bit ADC
AD converter for ALS.
ALS Control Logic
This block controls ambient light sensor ADC.
PD_PS
Photo diode for proximity sensor.
DC Light Rejection Amp
DC light is rejected in this block.
Linear ADC
AD converter for proximity sensor.
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