Data Sheet

(V
DD
= 1.8V, V
LED+
= 5.0V, T
A
= +25°C, unless otherwise noted.)
645
650
655
660
665
670
675
-50 0 50 100 150
PEAK WAVELENGTH (nm)
TEMPERATURE (°C)
RED LED PEAK WAVELENGTH
vs. TEMPERATURE
toc11
LED CURRENT:
10mA
20mA
30mA
50mA
MODE = FLEX LED
ADC RES = 18 BITS
ADC SR = 400 SPS
ADC FULL SCALE = 2048nA
860
870
880
890
900
910
-50 0 50 100 150
PEAK WAVELENGTH (nm)
TEMPERATURE (°C)
IR LED PEAK WAVELENGTH
vs. TEMPERATURE
toc12
LED CURRENT
10mA
20mA
30
mA
50
mA
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
-20
0
20
40
60
80
100
120
400 450 500 550 600 650 700
NORMALIZED POWER (%)
WAVELENGTH (nm)
GREEN LED SPECTRA AT 30°C
toc10
Maxim Integrated │ 7
www.maximintegrated.com
MAX30105 High-Sensitivity Optical Sensor
for Smoke Detection Applications
Typical Operating Characteristics (continued)