Typical operating characteristics, Electrical characteristics (continued) – Rainbow Electronics MAX44000 User Manual
Page 4
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MAX44000
Ambient and Infrared Proximity Sensor
Note 2: All devices are 100% production tested at T
A
= +25NC. Temperature limits are guaranteed by design.
Note 3: Guaranteed by design. Green 538nm LED chosen for production so that the IC responds to 100 lux flourescent light with
100 lux.
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 1.8V, T
MIN
– T
MAX
= -40°C to +105°C, T
A
= +25°C, unless otherwise noted.) (Note 2)
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.)
SPECTRUM RESPONSE
MAX44000 toc01
WAVE LENGTH (nm)
NORMALIZED OUTPUT
970
870
770
670
570
470
370
20
40
60
80
100
120
0
270
1070
GREEN CHANNEL
RED CHANNEL
CIE CURVE
ADC COUNT vs. DISTANCE
vs. LED DRIVE CURRENT
MAX44000 toc02a
DISTANCE (mm)
ADC COUNT
120
100
80
60
40
20
50
100
150
200
250
300
0
0
140
I
OUT
= 110mA
I
OUT
= 50mA
I
OUT
= 20mA
ADC COUNT vs. DISTANCE vs. OBJECT
MAX44000 toc02
b
ADC COUNT
90
80
70
60
50
40
30
20
10
0
100
DISTANCE (mm)
50
100
150
200
250
300
0
GREY CARD
WHITE CARD
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
I
2
C TIMING CHARACTERISTICS
Serial-Clock Frequency
f
SCL
400
kHz
Bus Free Time Between STOP
and START
t
BUF
1.3
F
s
Hold Time (Repeated) START
Condition
t
HD,STA
0.6
F
s
Low Period of the SCL Clock
t
LOW
1.3
F
s
High Period of the SCL Clock
t
HIGH
0.6
F
s
Setup Time for a REPEATED
START
t
SU.STA
0.6
F
s
Data Hold Time
t
HD,DAT
0
0.9
F
s
Data Setup Time
t
SU,DAT
100
ns
SDA Transmitting Fall Time
t
F
I
SINK
P 6mA, t
R
and t
F
between 0.3 x V
DD
and 0.7 x V
DD
100
ns
Setup Time for STOP Condition
t
SU,STO
0.6
F
s
Pulse Width of Suppressed Spike
t
SP
0
50
ns