Datasheet MAX30101 (Maxim) - 8

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