Datasheet

(V
DD
= 1.8V, V
LED+
= 5.0V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
IR LED CHARACTERISTICS (Note 3)
LED Peak Wavelength λ
P
I
LED
= 20mA, T
A
= +25°C 870 880 900 nm
Full Width at Half Max Δλ I
LED
= 20mA, T
A
= +25°C 30 nm
Forward Voltage V
F
I
LED
= 20mA, T
A
= +25°C 1.4 V
Radiant Power P
O
I
LED
= 20mA, T
A
= +25°C 6.5 mW
RED LED CHARACTERISTICS (Note 3)
LED Peak Wavelength λ
P
I
LED
= 20mA, T
A
= +25°C 650 660 670 nm
Full Width at Half Max Δλ I
LED
= 20mA, T
A
= +25°C 20 nm
Forward Voltage V
F
I
LED
= 20mA, T
A
= +25°C 2.1 V
Radiant Power P
O
I
LED
= 20mA, T
A
= +25°C 9.8 mW
PHOTODETECTOR CHARACTERISTICS (Note 3)
Spectral Range of Sensitivity
λ
(QE > 50%)
QE: Quantum E󰀩ciency 600 900 nm
Radiant Sensitive Area A 1.36 mm
2
Dimensions of Radiant Sensitive
Area
L x W
1.38 x
0.98
mm x
mm
INTERNAL DIE TEMPERATURE SENSOR
Temperature ADC Acquisition
Time
T
T
T
A
= +25°C 29 ms
Temperature Sensor Accuracy T
A
T
A
= +25°C ±1 °C
Temperature Sensor Minimum
Range
T
MIN
-40 °C
Temperature Sensor Maximum
Range
T
MAX
85 °C
DIGITAL INPUT CHARACTERISTICS: SCL, SDA
Input High Voltage V
IH
V
DD
= 2V
0.7 x
V
DD
V
Input Low Voltage V
IL
V
DD
= 2V
0.3 x
V
DD
V
Hysteresis Voltage V
H
0.2 V
Input Leakage Current I
IN
V
IN
= GND or V
DD
(STATIC) ±0.05 ±1 µA
DIGITAL OUTPUT CHARACTERISTICS: SDA, INT
Ouput Low Voltage V
OL
I
SINK
= 6mA 0.2 V
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Maxim Integrated │ 4
MAX30102 High-Sensitivity Pulse Oximeter and
Heart-Rate Sensor for Wearable Health
Electrical Characteristics (continued)