Datasheet

(V
DD
= 1.8V, V
LED+
= 5.0V, T
A
= +25°C, min/max are from T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
=
25°C.) (Note 1)
Note 1: All devices are 100% production tested at T
A
= +25°C. Specifications over temperature limits are guaranteed by Maxim
Integrated’s bench or proprietary automated test equipment (ATE) characterization.
Note 2: Specifications are guaranteed by Maxim Integrated’s bench characterization and by 100% production test using proprietary
ATE setup and conditions.
Note 3: For design guidance only. Not production tested.
Note 4: These specifications are guaranteed by design, characterization, or I
2
C protocol.
Figure 1. I
2
C-Compatible Interface Timing Diagram
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
I
2
C TIMING CHARACTERISTICS
I
2
C Write Address AE Hex
I
2
C Read Address AF Hex
SCL Clock Frequency f
SCL
Lower limit not tested 0 400 kHz
Bus Free Time Between STOP
and START Condition
t
BUF
1.3 µs
Hold Time (Repeated) START
Condition
t
HD,STA
0.6 µs
SCL Pulse-Width Low t
LOW
1.3 µs
SCL Pulse-Width High t
HIGH
0.6 µs
Setup Time for a Repeated START
Condition
t
SU,STA
0.6 µs
Data Hold Time t
HD;DAT
0 0.9 µs
Data Setup Time t
SU;DAT
100 ns
Setup Time for STOP Condition t
SU;STO
0.6 µs
Pulse Width of Suppressed Spike t
SP
50 ns
Bus Capacitance C
b
400 pF
SDA and SCL Receiving Rise
Time
T
r
(Note 4) 20 300 ns
SDA and SCL Receiving Fall Time t
Rf
(Note 4) 20 x V
DD
/5.5 300 ns
SDA Transmitting Fall Time t
of
20 x V
DD
/5.5 250 ns
SDA
SCL
t
HD,STA
START CONDITION
t
R
t
F
t
LOW
t
SU,DAT
t
HD,DAT
t
SU,STA
t
HD,STA
REPEATED START CONDITION
t
SP
t
SU,STO
t
BUF
STOP
CONDITION
START
CONDITION
t
HIGH
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Maxim Integrated │ 5
MAX30101 High-Sensitivity Pulse Oximeter and
Heart-Rate Sensor for Wearable Health
Electrical Characteristics (continued)