Description:

High Accuracy I2C MAX30105 Particle Optical Sensor Photodetectors Board Module 1.8V power supply

MAX30105 Particle and Pulse Ox Sensor

The MAX30105 Particle Sensor is a flexible, powerful sensor enabling sensing of distance, heart rate, particle detection and even the blinking of an eye. The MAX30105 has been equipped with three LEDs as well as a very sensitive photon detector. The idea is to pulse the different LEDs, then detect what shines back. Based on the reflected signature it’s possible to detect different types of particles or materials (such as oxygenated blood or smoke from a fire).

The MAX30105 utilizes a red LED, a green LED, and an IR (Infrared) LED for presence sensing, heart-beat plotting and heart-rate monitoring among its multitude of uses, including Pulse Oximetry. The MAX30105 is designed to operate at 5V and can communicate with both 3.3V and 5V microcontrollers. We’ve also written an Arduino library for the MAX30105 Breakout which takes care of all of the I2C communication, bit shifting, register writing and sample reading.

V DD to GND .........................................................-0.3V to +2.2V
GND to PGND ......................................................-0.3V to +0.3V
X_DRV, V LED+ to PGND ......................................-0.3V to +6.0V
All Other Pins to GND ..........................................-0.3V to +6.0V
Output Short-Circuit Current Duration .......................Continuous
Continuous Input Current into Any Terminal ....................±20mA
Continuous Power Dissipation (T A = +70°C)
OESIP (derate 5.5mW/°C above +70°C) ....................440mW
Operating Temperature Range .......................... -40°C to +85°C
Junction Temperature ........................................................+90°C
Soldering Temperature (reflow) ......................................+260°C
Storage Temperature Range ............................ -40°C to +105°C
OESIP
Junction-to-Ambient Thermal Resistance (θ JA ) ........180°C/W Junction-to-Case Thermal Resistance (θ JC ) .................150°C/W

(Note 1)
(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 2)

Power-Supply Voltage V DD
Guaranteed by RED and IR count tolerance 1.7 1.8 2.0 V LED Supply Voltage V LED+
(R_LED+ and IR_LED+ only) 3.1 3.3 5.25 V
Supply Current I DD Particle-sensing mode, PW = 215µs, 50sps 600 1100µA
IR only mode, PW = 215µS, 50sps 600 1100
Supply Current in Shutdown I SHDN T A = +25°C, MODE = 0x80 0.7 2.5 µA
OPTICAL SENSOR CHARACTERISTICS
ADC Resolution 18 bits
Red ADC Count

(Note 3)
RED_PA = 0x0C, LED_PW = 0x01,
SPO2_SR = 0x05,
ADC_RGE = 0x00, T A = +25°C
65536 Counts
SNR Red LED SNR RED
White card loop-back, LED_PW =
0x11, ADC_RGE = 0x10, T A = 25°C
88.9 300 dB
SNR Green LED SNR GREEN
White card loop-back, LED_PW =
0x11, ADC_RGE = 0x01, T A = 25°C
80.4 dB

Features:

• Built-in Red, IR, and Green LEDs
• 5V operation (3.3V is allowed, but green LED is not guaranteed to operate)
• Onboard 1.8V regulation and I2C interface circuitry
• Sensitivity configurable down to 7.81pA
• 3200Hz maximum sample rate
• Built-in 32 sample FIFO (First In, First Out)
• Applications include presence detection, distance sensing (18" max), pulse oximetry, blood oxygen saturation level (SpO2), smoke and particle detection

Kit include:

1 x MAX30105 Sensor

Documents:

Arduino Library