LV0111CF Ambient Light Sensor IC Application Note

APPLICATION NOTE
Monolithic Linear IC
LV0111CF
For Ultra-small Ambient Light Sensor
Photo IC
Overview
The LV0111CF is a photo IC for micro-sized ambient light sensor. It enables to be mounted on a very small
limited space such as on the cell phones which is becoming small and thinner and on other mobile applications.
It is suitable for application like mobile phone, tablet PC, digital still camera, security camera and camcorder.
Features
Logarithmic current output
 Smallest ODCSP package in the world (1.08mmX1.08mm, thickness:0.6mm)
 Integrated sleep mode (Max current 0.1uA)
 Low power consumption (75uA at 1,000Lux)
 Less sensibility in infrared area
 Low output temperature variation
 Halogen free compliant
Pin Assignment
Package Dimensions
unit : mm (typ)
3350A
<Top View>
<Bottom View>
1
4
4
1
2
3
3
2
No.
1
2
3
4
Name
VCC
EN
GND
OUT
Function
Power supply
Enable
Ground
Output
Ball Pitch : 0.5mm , Ball Size : 0.25mm
▫
6Jun2012 Rev1.0 1/17
LV0111CF
Pad Layout (Photos)
＜Top View＞
＜Bottom View＞
4
3
3
4
1
2
2
1
PAD
* The position with PAD becomes pin 1.
Recommended Land Pattern
Unit [um]
Land ( pink ) : 300um φ
Solder resist opening (green ) : 400um φ
Block Diagram
VCC
1
Current
Amp.
OUT
4
EN
2
3
GND
2/21
LV0111CF
Chip Pattern and Photo-receiving Pattern Diagrams
< Top view >
1080
83.5
PD
PD
PD
167
PD
85
540
83.5
1080
195
195
85
167
PADcenter
（-386.9、-377.9）
540
※Unit ：μ m
The PAD becomes pin 1.
ODCSP Cross Section Structure
Optical Device Chip Size Package
SANYO original wafer level package for optical device.
Glass
Glue
（Contact pad）
Photodiode
Si
Insulator
PKG edge
Passivation
Redistribution layer
Solder Ball
3/21
LV0111CF
Specifications
Absolute Maximum Ratings at Ta=25C
Parameter
Maximum supply voltage
Operating temperature
Storage temperature
Symbol
VCC
Topr
Tstg
Conditions
Ratings
6
-30 to 85
-40 to 100
Unit
V
C
C
Recommended operating conditions and operating voltage range atTa=25
Parameter
Recommended supply voltage
EN pin low voltage
EN pin high voltage
Symbol
VCC
Vl
Vh
Conditions
Sleep mode
Normal operation mode
min
2.3
0
1.5
typ
3.3
max
5.5
0.4
VCC
Unit
V
V
V
Electrical and optical characteristics at VCC=3.3V, Ta=25
Parameter
Current dissipation *1, *3
Symbol
Conditions
ICC
Ev=1000 lux, RL=27kΩ
Sleep current
Isl
Ev=0 lux
Ev=100 lux
18
21
24
A
Output current (2) *1, *3
IO1
IO2
Ev=1000 lux
27
31
35
A
Dark current *3
Ileak
Ev=0 lux
0.35
0.5
A
Temperature coefficient *2
Itc
Ev=100 lx
0.1
Rise time
Tr1
Ev=1000 lux, RL=27kΩ
40
100
s
Tf1
Ev=1000 lux, RL=27kΩ
2
5
ms
*3
Output current (1) *1, *3
Fall time
*4
*4
Peak sensitivity wave length *2
min
50
λp
typ
75
max
100
0.01
0.1
A
550
Unit
A
% / C
nm
*1. Measured with the standard light source A. White LED is used instead in the mass production line.
*2. Design guaranteed item
*3. Test circuit for measuring current dissipation and output current
VCC
A
＿
Light
source
LV0111CF
OUT
Ipd
A
＿
*4. Measuring method of rise time (Tr) and fall time (Tf)
VCC
Ipd
Pulse drive
0A
0.8V
White LED
LV0111CF
90％
OUT
VOUT
Ipd
10％
GND
Tr
Tf
4/21
LV0111CF
Typical Performance Characteristics
Illuminance - Output current
50
Output current[μ A]
40
30
20
10
Output current[μ A]
0
1
10
100
1000
10000
Illuminance Ev [lx]
Illuminance - Output current
Output current[μ A]
100
10
Output current[μ A]
1
1
10
100
1000
10000
Illuminance Ev [lx]
Illuminance - Consumption current
Consumption current[μ A]
120
100
80
60
40
20
Consumption current
0
1
10
100
1000
10000
Illuminance Ev [lx]
5/21
LV0111CF
Illuminance - Sleep current
10
Output current[μ A]
1
0.1
0.01
0.001
sleep current[μ A]
0.0001
output current at the sleep[μ A]
0.00001
1
10
100
1000
10000
Illuminance Ev [lx]
Vcc - Relative output current (@1000lx)
1.4
Relative output current
1.2
1
0.8
0.6
Relative output current
0.4
0.2
0
2
3
4
5
6
Supply Voltage - Vcc[V]
Vcc - Relative consumption current (@1000lx)
Relative consumption current
1.4
1.2
1
0.8
0.6
Relative consumption current
0.4
0.2
0
2
3
4
5
6
Supply Voltage - Vcc[V]
6/21
LV0111CF
Ambient temperature - Relative output current（@100lx）
1.4
Relative current
1.2
1
0.8
0.6
0.4
Relative current
0.2
0
-60
-40
-20
0
20
40
60
80
100
120
Ambient temperature Ta [℃]
Ambient temperature - Ileak
10
Ileak[μ A]
1
0.1
Ileak[μ A]
0.01
0.001
-60
-40
-20
0
20
40
60
Ambient temperature Ta [℃]
80
100
120
Spectral Response
1
0.9
Relative sensitivity
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
200
300
400
500
600
700
800
900
1000
1100
1200
Wavelength λ （nm)
7/21
LV0111CF
Directional Sensitivity (@1000lx Fluorescent lamp)
1.2
Relative output curren
1
0.8
0.6
0.4
Relative output curren
0.2
0
-90
-60
-30
0
30
60
90
degree[°]
Directional Sensitivity (@1000lx Fluorescent lamp)
1.2
Relative PD curren
Relative PD curren
1
0.8
0.6
0.4
0.2
0
-90
-60
-30
0
30
60
90
degree[°]
8/21
LV0111CF
Sample Application Circuit
CPU A/D Input port
VCC
Power
supply
1
4
0.1uF
OUT
33KΩ
EN
2
3
0.47uF
GND
CPU Output port
*The receiving photoresponse changes depending on the distance from the diameter,
the material, and the case to IC of the sensor window etc.
Therefore, the optimum setting is necessary for resistance and the capacity value
between 4 pin(OUT) and 3 pin(GND) according to the application.
9/21
LV0111CF
Pin Functions
Pin
No.
1
2
Pin Name
VCC
EN
Pin function
Equivalent Circuit
Power supply terminal.
Insert a capacitor between
this pin and ground to
prevent the influence of
noise, etc.
Enable terminal.
This pin is used to control
the IC operational state.
When this pin is low, "sleep"
state.
When this pin is high,
"active" state.
VCC
5KΩ
2
3
GND
Ground terminal.
4
OUT
Output terminal.
This pin is outputted the
logarithmic current
depending on ambient light.
VCC
4
300Ω
10/21
LV0111CF
Relative Output Current vs Distance
・Measuring method
hole sizeΦ
Illumination Sensor
standard light　A
metal sheet
Thickness 0.4mm
distance S
・Evaluation result
Relative output current - distance（@1000lx）
1
0.9
0.8
Relative output current
0.7
0.6
0.5
0.4
Φ ＝1mm
Φ ＝2mm
Φ ＝3mm
None
0.3
0.2
0.1
0
0
1
2
3
Diatance S[mm]
4
5
・Recommended condition
Hole size φ (optical window) = more than 2mm.
Distance from sensor to optical window = less than 2mm.
11/21
LV0111CF
Light Source Dependency
Light source dependency
Sun Light
White LED
Standard Light A
Incandescent Light
Fluorescent Light
0
0.5
1
1.5
2
*Fluorescent light is set to “1”
Dynamic Current Range
Output current dynamic range(Sunlight)
50
Output current[μ A]
40
30
20
10
0
1
10
100
1000
10000
100000
Illuminance[lx]
12/21
LV0111CF
Differential Light Sensibility by IC Location
<Top view>
Sensor window
Sensor
(φ=2mm)
-0.1～ｰ0.4mm
+0.1～0.4mm
(Distance S)
<Side view>
hole sizeΦ
Illumination Sensor
standard light　A
metal sheet
Thickness 0.4mm
IC location dependency（@1000lx）
1.05
Relative output current
distance S
1
0.95
0.9
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
Distance S[mm]
0.3
0.4
0.5
13/21
LV0111CF
Window design guide
Flat window lens design
A window lens will surely limit the viewing angle of the LV0111CF. The window lens should be placed
directly on top of the LV0111CF. The thickness of the lens should be kept at minimum to minimize loss of
power due to reflection and also to minimize loss of loss due to absorption of energy in the plastic material.
A thickness of T = 1 mm is recommended for a window lens design.
Window with light pipe design
If a smaller window is desired while maintaining a wide effective viewing angle of the LV0111CF, a
cylindrical piece of transparent plastic is needed to trap the light and then focus and guide the light on to
the LV0111CF. Hence the name light guide or also known as light pipe. The pipe should be placed directly
on top of the LV0111CF with a distance of Z = 0.5mm to achieve peak performance. The light pipe should
have minimum of 1.5mm in diameter to ensure that whole area of the sensor will be exposed.
D1
D2
Light Pipe
D1
T
Top view
Window Lens
T
Z
L
WD
WD
PD
Z
LV0111CF
0.42
LV0111CF
0.68
Side view
FLAT WINDOW LENS
WD
(T+L+Z)
1.5
2.0
2.5
3.0
WINDOW WITH LIGHT PIPE
FLAT WINDOW LENS
(L=0.0)
Z
D1
0.5
2.0
1.0
3.0
1.5
4.0
2
5.0
WINDOW WITH LIGHT PIPE
(D2=1.5, Z=0.5)
D1
L
2.5
1.5
*All dimensions are in mm.
*These dimensions are based on a window lens thickness of 1.0mm and a refractive index of 1.59.
WD: Distance between window front panel and LV0111CF
D1: Window diameter, T: Thickness, L: Length of light pipe
D2: Light pipe diameter, Z: Distance between window rear panel and LV0111CF
14/21
LV0111CF
Evaluation Board Manual
<Evaluation Board>
Evaluation Board
Photo Diode
IC1
4pin
OUT
C1
0.1μＦ
R1
27KΩ
1pin
VCC
2pin
EN
3pin
GND
Monitoring
or
To CPU AD port
EN
Low
High
State
Sleep
Active
15/21
LV0111CF
LIGHT
SOURCE
ILLUMINANCE
METER
GND
OUT
VCC
EN
00.7600 V DC
MULTIMETER
POWER SUPPLY
Test Procedure:
1. Connect the test setup as shown above.
2. Connect IC power supply (2.3V to 5.5V) between VCC and GND.
3. Connect multimeter between OUT and GND.
4. Irradiate a light, and put on the illuminance meter near the IC.
5. Control the light source and to be adjusted 500 lux.
6. Then , OUT terminal of LV0111CF is outputted roughly 28uA. Therefore, multimeter is showed roughly
0.76V. (0.76V = 28uA×27kΩ）
LV0111CF features:
・Logarithmic current output
・Low current consumption (typ 75uA at 1000lux)
16/21
LV0111CF
Evaluation Board Circuit Diagram
VCC
1
4
OUT
0.1uF
27KΩ
2
3
GND
LV0111CF
EN
Bill of Materials for LV0111CF Evaluation Board
Designator
Quantity
IC1
1
R1
C1
1
1
Description
Value
Tolerance
Ambient
Light Sensor
OUT (to
GND)
VCC Bypass
Capacitor
27k
(0.063W)
0.1uF
/16V
±5％
±10％
Footprint
ODCSP4
(0.5mm ,pitch)
1005
(0402Inch)
1005
(0402Inch)
Manufacturer Part
Number
Substitution
Allowed
Lead
Free
SANYO
LV0111CF
No
yes
ROHM
MCR01MZPJ273
yes
yes
MURATA
GRM155B11C104KA
yes
yes
Manufacturer
Evaluation Board PCB Design
(Top View )
IC1
R1
C1
( Pattern )
( Resist )
( Silk )
Allowable power consumption Pdmax(mW）
200.0
Specified circuit board
6X10X0.8mm
One layer glass epoxy
150
100.0
30
0.0
-30
0
30
60
90
Ambient temperature Ｔａ（℃）
120
Pdmax - Ta
17/21
LV0111CF
Packing Specification of Embossed Carrier Taping
18/21
LV0111CF
19/21
LV0111CF
20/21
LV0111CF
Lineup of Ambient Light Sensor by SANYO
Product name
LA0151CS
LA0152CS
LV0111CF
LV0104CS
Output type
Linear current
Linear current
Logarithmic current
16bitAD digital
Overall size(mm)
1.01*1.01*0.6
1.01*1.01*0.6
1.08*1.08*0.6
1.08*1.08*0.6
Spectral characteristics
Normal
Normal
Closer to visibility
Closer to visibility
Gain switching
○
―
―
○
Standby function
―
○
○
○
Operating voltage (V)
2.2～5.5
2.2～5.5
2.3～5.5
2.3～3.6
Operating temperature range
(°C)
-30～85
-30～85
-30～85
-30～85
Consumption current 1000 lx
150uA
150uA
75uA
70uA
Output current 100 lx
8uA
8uA
20uA
100 counts
Output current 1000 lx
80uA
80uA
30uA
1000 counts
Peak sensitivity (nm)
550
550
550
550
D range
1～100k lx
1～100k lx
1～100k lx
0.125～65k lx
Pb free
○
○
○
○
Halogen free
-
○
○
○
Status
Mass production
Mass production
Mass production
Sep.2012 MP
LV0111CF/LV0104CS
LV0101CF / LV0104CS
1
1
0.9
0.9
0.8
0.8
Relative sensitivity
Relative sensitivity
LA0151CS/LA0152CS
LA0151CS / LA0152CS
0.7
0.6
0.5
0.4
0.3
0.7
0.6
0.5
0.4
0.3
0.2
0.2
0.1
0.1
0
0
300
400
500
600
700
800
wave length λ （nm）
LA0151/52CS
Human eye
900
1000
300
400
500
600
700
800
900
1000
wave length λ （nm）
LV0101CF/04CS
Human eye
This catalog provides information as of February, 2012. Specifications and information herein are subject
to change without notice.
21/21