Datasheet

(V
DD
= 1.8V, V
LED+
= 5.0V, T
A
= +25°C, RST, unless otherwise noted.)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
400 500 600 700 800 900 1000 1100
QUANTUM EFFICIENCY
WAVELENGTH (nm)
PHOTODIODE QUANTUM EFFICIENCY
vs. WAVELENGTH
toc19
0
10
20
30
40
50
60
1.80 1.90 2.00 2.10 2.20 2.30
FORWARD CURRENT (mA)
FORWARD VOLTAGE (V)
RED LED FORWARD VOLTAGE vs.
FORWARD CURRENT AT T
A
= +25°C
toc13
MODE = FLEX LED
ADC RES = 18 BITS
ADC SR = 100 SPS
ADC FULL SCALE = 2048nA
0
10
20
30
40
50
60
70
1.25 1.30 1.35 1.40 1.45
FORWARD CURRENT (mA)
FORWARD VOLTAGE (V)
IR LED FORWARD VOLTAGE vs.
FORWARD CURRENT AT T
A
= +25°C
toc14
MODE = FLEX LED
ADC RES = 18 BITS
ADC SR = 100 SPS
ADC FULL SCALE = 2048nA
0
10
20
30
40
50
60
2.7 2.8 2.9 3 3.1
FORWARD CURRENT (mA)
FORWARD VOLTAGE (V)
GREEN LED FORWARD VOLTAGE vs.
FORWARD CURRENT at 25°C
toc15
MODE = FLEX LED
ADC RES = 18 BITs
ADC SR = 200 SPS
ADC FULL SCALE = 2048nA
0
25
50
75
100
125
150
0 25 50 75 100 125 150 175 200 225
RELATIVE INTENSITY (%)
I
F
(mA)
RELATIVE INTENSITY
vs. GREEN LED FORWARD CURRENT
toc16
-8
-4
0
4
8
12
16
0 50 100 150 200
DOMINANT WAVELENGTH SHIFT (nm)
I
F
(mA)
DOMINANT WAVELENGTH SHIFT
vs. GREEN LED FORWARD CURRENT
toc17
-70
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
MAGNITUDE (dB)
FREQUENCY (Hz)
PW = 69µs
PW = 118µs
PW = 215µs
PW = 411µs
AMBIENT REJECTION vs.
AMBIENT FREQUENCY
toc18
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Maxim Integrated │ 8
MAX30101 High-Sensitivity Pulse Oximeter and
Heart-Rate Sensor for Wearable Health
Typical Operating Characteristics (continued)