Operating Temperature Range .......................... -40NC to +85NC
Soldering Temperature (reflow) ......................................+260NC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= 1.8V, T
MIN
to T
MAX
= -40NC to +85NC, unless otherwise noted.) (Note 1)
PARAMETER
OPTICAL CHARACTERISTICS
Maximum Lux Sensitivity
Saturation Ambient Lux Level
Total Error
Light Source Matching
Infrared Transmittance at 850nm
Ultraviolet Transmittance at
363nm
Dark Level Count
Maximum Signal Integration
Time
Minimum Signal Integration Time
ADC Conversion Time
POWER SUPPLY
Power-Supply Voltage
Power-Supply Current
DIGITAL I/O CHARACTERISTICS
Output Low Voltage SDA,
INT
INT
Leakage Current
SCL, SDA, A0 Input Current
I
2
C Input Low Voltage
I
2
C Input High Voltage
Address Input Low Voltage
Address Input High Voltage
Input Capacitance
2
V
OL
I
IH
, I
IL
V
IL_I2C
V
IH_I2C
V
IL_A0
V
IH_A0
I
SINK
= 6mA
T
A
= +25NC
T
A
= +25NC
SDA, SCL
SDA, SCL
A0
A0
V
CC
-
0.3V
3
0.7 x
V
CC
0.3
0.06
0.01
0.01
0.4
20
20
0.3 x
V
CC
V
nA
nA
V
V
V
V
pF
V
CC
I
CC
Guaranteed by TE test
T
A
= +25NC, 100 lux, I
2
C inputs inactive
T
A
= -40NC to +85NC
1.7
0.65
3.6
1.2
1.6
V
FA
ACT
IRR
UVR
0LUX
TE
Fluorescent light
Sunlight
Green LED 538nm response,
T
A
= +25NC (Note 2)
Fluorescent/incandescent light under dark
glass
T
A
= +25NC (Note 3)
T
A
= +25NC (Note 3)
0 lux, T
A
= +25NC, 800ms range
Has 50/60Hz rejection
Automatic mode, has 50/60Hz rejection
Manual mode only
100ms range, T
A
= +25NC
100ms range
99.6
97
10
2
1.2
0
800
100
6.25
100
103
100.4
107
3
3
0.025
0.025
104,444
15
Lux/LSB
Lux
%
%
%
%
Lux
ms
ms
ms
SYMBOL
CONDITIONS
MIN
TYP
MAx
UNITS
Low-Power Digital Ambient Light Sensor
with Enhanced Sensitivity
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 1.8V, T
MIN
to T
MAX
= -40NC to +85NC, unless otherwise noted.) (Note 1)
PARAMETER
I
2
C TIMING
Serial-Clock Frequency
Bus Free Time Between a STOP
and a START Condition
Hold Time (Repeated) START
Condition
Low Period of the SCL Clock
High Period of the SCL Clock
Setup Time for a Repeated
START Condition
Data Hold Time
Data Setup Time
Fall Time of SDA Transmitting
Setup Time for STOP Condition
Pulse Width of Spike
Suppressed
Note
Note
Note
Note
1:
2:
3:
4:
f
SCL
t
BUF
t
HD,STA
t
LOW
t
HIGH
t
SU,STA
t
HD,DAT
t
SU,DAT
t
F
t
SU,STO
t
SP
Input filters on the SDA and SCL inputs
suppress noise spikes
I
SINK
P
6mA, t
R
and t
F
are measured
between 0.3 x V
DD
and 0.7 x V
DD
0.6
0
50
(Note 4)
1.3
0.6
1.3
0.6
0.6
0
100
100
0.9
400
kHz
Fs
Fs
Fs
Fs
Fs
Fs
ns
ns
Fs
ns
SYMBOL
CONDITIONS
MIN
TYP
MAx
UNITS
MAX44007
3
All devices are 100% production tested at T
A
= +25NC. Temperature limits are guaranteed by design.
Green 538nm LED chosen for production is such that the IC responds to 100 lux fluorescent light with 100 lux.
With respect to green LED 538nm response.
A master device must provide a hold time of at least 300ns for the SDA signal (referred to V
IL
of the SCL signal) to bridge
the undefined region of SCL’s falling edge.
Low-Power Digital Ambient Light Sensor
with Enhanced Sensitivity
MAX44007
Typical Operating Characteristics
(V
CC
= 1.8V, default power upsetting; unless otherwise noted.)
SPECTRUM RESPONSE
MAX44007 toc01
RADIATION PATTERN
RELATIVE SENSITIVITY (% FROM 0°)
90
80
70
60
50
40
30
20
10
0
AUTO MODE,
INCANDESCENT LAMP
MAX44007 toc02
120
100
NORMALIZED RESPONSE
MAX44007 RESPONSE
80
60
40
20
0
300
400
500
600
700
800
900
CIE
100
1000
-90
-60
-30
0
30
60
90
WAVELENGTH (nm)
LUMINOSITY ANGLE (°)
SPECTRUM OF LIGHT SOURCES
FOR MEASUREMENT
MAX44007 toc03
SUPPLY CURRENT vs. SUPPLY VOLTAGE
0 LUX AND 100 LUX, CONT = 1
1.2
SUPPLY CURRENT (µA)
1.0
0.8
0.6
0.4
0.2
AUTO MODE,
FLUORESCENT LAMP
1.5
1.8
2.1
2.4
2.7
3.0
3.3
3.6
100 LUX, CONT = 0
5000 LUX, CONT = 0
MAX44007 toc04
160
140
NORMALIZED RESPONSE
120
100
80
60
40
20
0
300
400
500 600 700 800
WAVELENGTH (nm)
FLUORESCENT
SUNLIGHT
INCANDESCENT
1.4
0
900 1000
SUPPLY VOLTAGE (V)
OUTPUT CODE ERROR vs. SUPPLY VOLTAGE
OUTPUT CODE ERROR (RATIO FROM 1.8V)
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
1.5
1.8
50 AND 300 LUX
AUTO MODE,
FLUORESCENT LAMP
2.1
2.4
2.7
3.0
3.3
3.6
MAX44007 toc05
SUPPLY CURRENT vs. TEMPERATURE
V
CC
= 3.3V
MAX44007 toc06
1.10
1.2
1.0
SUPPLY CURRENT (µA)
0.8
0.6
V
CC
= 2.5V
0.4
0.2
0
-40
-15
10
35
60
100 LUX
AUTO MODE,
FLUORESCENT LAMP
V
CC
= 1.8V
85
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
4
Low-Power Digital Ambient Light Sensor
with Enhanced Sensitivity
Typical Operating Characteristics (continued)
(V
CC
= 1.8V, default power upsetting; unless otherwise noted.)
SUPPLY CURRENT vs. LUX READING
MAX44007 toc07
MAX44007
MAX44007 READING vs. LUX LEVEL
MAX44007 toc08
SDA INT OUTPUT LOW VOLTAGE
vs. SINK CURRENT
120
110
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
MAX44007 toc09
3.5
3.0
SUPPLY CURRENT (µA)
2.5
2.0
1.5
1.0
0.5
SUNLIGHT
0
100
1k
10k
350
300
200
150
100
50
0
INCANDESCENT
LAMP
MAX44007 READING (counts)
SDA
FLUORESCENT
LAMP
V
OL
(mV)
INT
100k
0
100
200
300
400
500
LUX READING (LUX)
REFERENCE METER READING (lux)
4 5 6
I
SINK
(mA)
7
8
9
10
Pin Configuration
TOP VIEW
SDA
6
SCL
5
INT
4
MAX44007
+
EP
1
V
CC
2
GND
3
A0
UTDFN-Opto
(2mm
x
2mm)
Pin Description
PIN
1
2
3
4
5
6
—
NAME
V
CC
GND
A0
INT
SCL
SDA
EP
Power Supply
Ground
Address Select. Pull high to select address 1011 011x or low to select address 1011 010x.
Interrupt Output. Use an external pullup resistor.
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