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MAX44009
Industry’s Lowest-Power
Ambient Light Sensor with ADC
ELECTRICAL CHARACTERISTICS (continued)
(V CC = 1.8V, T MIN to T MAX = -40 N C to +85 N C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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
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
Fall Time of SDA Transmitting
Setup Time for STOP Condition
Pulse Width of Spike
Suppressed
t HD,DAT
t SU,DAT
t F
t SU,STO
t SP
(Note 4)
I SINK P 6mA, t R and t F are measured
between 0.3 x V DD and 0.7 x V DD
Input filters on the SDA and SCL inputs
suppress noise spikes
0
100
0.6
0
100
0.9
50
F s
ns
ns
F s
ns
Note
Note
Note
Note
1:
2:
3:
4:
All devices are 100% production tested at T A = +25 N C. 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.
Maxim Integrated
3
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