MAX301ESE

Product Overview

• Category: Integrated Circuit (IC)
• Use: Biomedical Sensor
• Characteristics: High-performance, low-power, integrated pulse oximeter and heart-rate monitor module
• Package: 16-pin SOIC package
• Essence: MAX301ESE is a highly integrated sensor module designed for non-invasive measurement of physiological parameters such as oxygen saturation level (SpO2) and heart rate.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 1.8V to 3.3V
• Operating Temperature Range: -40°C to +85°C
• SpO2 Measurement Range: 0% to 100%
• Heart Rate Measurement Range: 30 bpm to 200 bpm
• LED Current: Programmable from 0mA to 50mA
• Communication Interface: I2C or SPI

Pin Configuration

The MAX301ESE has the following pin configuration:

1. VDD: Power supply voltage
2. GND: Ground
3. SDA: Serial Data Line (I2C interface)
4. SCL: Serial Clock Line (I2C interface)
5. INT: Interrupt output
6. RD: Red LED drive current
7. IRD: Infrared LED drive current
8. RSET: External resistor for LED current control
9. AGND: Analog ground
10. PD: Photodiode input
11. REF: Reference voltage
12. VIO: Digital I/O voltage
13. RESET: Reset input
14. CLK: Clock input
15. SDOUT: Serial data output
16. SCLK: Serial clock output

Functional Features

• Integrated red and infrared LEDs for optical sensing
• Ambient light cancellation for accurate measurements
• Low power consumption for battery-operated devices
• High sample rate and resolution for precise measurements
• Flexible LED current control for different applications
• Interrupt output for event-driven processing

Advantages and Disadvantages

Advantages: - Highly integrated module reduces external component count - Accurate and reliable measurement of SpO2 and heart rate - Low power consumption extends battery life - Wide operating temperature range allows usage in various environments - Flexible communication interface options (I2C or SPI)

Disadvantages: - Limited to non-invasive physiological parameter measurements - Requires external resistor for LED current control - Relatively high cost compared to individual components

Working Principles

The MAX301ESE utilizes the principle of photoplethysmography (PPG) to measure SpO2 and heart rate. It emits red and infrared light into the skin, and the reflected light is detected by a photodiode. By analyzing the absorption characteristics of oxygenated and deoxygenated blood, the module calculates the SpO2 level. The heart rate is determined by measuring the pulsatile blood flow.

Application Field Plans

The MAX301ESE finds applications in various fields, including:

1. Medical Devices:

   • Pulse oximeters
   • Wearable health monitors
   • Fitness trackers

2. Sports and Fitness:

   • Heart rate monitoring during exercise
   • Sleep quality analysis

3. Home Healthcare:

   • Remote patient monitoring
   • Sleep apnea detection

4. Industrial Monitoring:

   • Oxygen level monitoring in hazardous environments
   • Vital sign monitoring in high-altitude operations

Alternative Models

Other alternative models that provide similar functionality to the MAX301ESE include:

1. MAX30102: Similar features with additional SpO2 and heart rate variability (HRV) algorithms.
2. ADPD188BI: Integrated optical module with advanced motion artifact rejection.
3. BH1792GLC: Compact sensor module with low power consumption and I2C interface.

These alternative models offer different trade-offs in terms of performance, cost, and additional features.

In conclusion, the MAX301ESE is a highly integrated biomedical sensor module designed for non-invasive measurement of SpO2 and heart rate. Its compact package, high performance, and low power consumption make it suitable for a wide range of applications in medical, sports, home healthcare, and industrial monitoring fields.