MAX44000
Ambient and Infrared Proximity Sensor
ELECTRICAL CHARACTERISTICS (continued)
(V DD = 1.8V, T MIN – T MAX = -40°C to +105°C, T A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
I 2 C TIMING CHARACTERISTICS
Serial-Clock Frequency
Bus Free Time Between STOP
and START
Hold Time (Repeated) START
Condition
Low Period of the SCL Clock
High Period of the SCL Clock
Setup Time for a REPEATED
START
f SCL
t BUF
t HD,STA
t LOW
t HIGH
t SU.STA
1.3
0.6
1.3
0.6
0.6
400
kHz
F s
F s
F s
F s
F s
Data Hold Time
Data Setup Time
SDA Transmitting Fall Time
Setup Time for STOP Condition
Pulse Width of Suppressed Spike
t HD,DAT
t SU,DAT
t F
t SU,STO
t SP
I SINK P 6mA, t R and t F between 0.3 x V DD
and 0.7 x V DD
0
100
0.6
0
100
0.9
50
F s
ns
ns
F s
ns
Note 1: All devices are 100% production tested at T A = +25 N C. Temperature limits are guaranteed by design.
Note 2: Guaranteed by design. Green 538nm LED chosen for production so that the IC responds to 100 lux flourescent light with
100 lux.
Typical Operating Characteristics
(V DD = 1.8V, T MIN – T MAX = -40°C to +85°C, unless otherwise noted. All devices are 100% production tested at T A = +25°C.
Temperature limits are guaranteed by design.)
120
SPECTRUM RESPONSE
300
ADC COUNT vs. DISTANCE
vs. LED DRIVE CURRENT
300
ADC COUNT vs. DISTANCE vs. OBJECT
GREEN CHANNEL
100
RED CHANNEL
250
250
CIE CURVE
80
60
40
20
200
150
100
50
I OUT = 110mA
I OUT = 50mA
I OUT = 20mA
200
150
100
50
GREY CARD
WHITE CARD
0
270 370 470 570 670 770 870 970 1070
0
0
20
40
60
80
100
120
140
0
0
10 20 30 40 50 60 70 80 90 100
4
WAVE LENGTH (nm)
DISTANCE (mm)
DISTANCE (mm)
Maxim Integrated
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