MAX861IUA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Biopotential and Optical Sensor Module
• Characteristics: High-performance, low-power, small form factor
• Package: 8-pin µMAX® package
• Essence: A highly integrated sensor module for measuring biopotential signals and optical heart rate monitoring
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage: 1.7V to 3.3V
• Operating Temperature Range: -40°C to +85°C
• Biopotential Signal Bandwidth: DC to 128Hz
• Optical Heart Rate Monitoring Bandwidth: DC to 4kHz
• Integrated LED Driver: Up to 2 LEDs with programmable current
• Integrated Photodetector: Ambient light cancellation and high dynamic range
• Communication Interface: I2C or SPI
• Low Power Consumption: Less than 1.5mA in active mode, less than 10µA in shutdown mode

Pin Configuration

The MAX861IUA+T has the following pin configuration:

1. SDA: Serial Data Input/Output (I2C interface)
2. SCL: Serial Clock Input (I2C interface)
3. INTB: Interrupt Output
4. GND: Ground
5. VDD: Supply Voltage
6. RST: Reset Input
7. NC: No Connection
8. SDO: Serial Data Output (SPI interface)

Functional Features

• Biopotential Measurement: The MAX861IUA+T can accurately measure biopotential signals such as ECG, EMG, and EEG.
• Optical Heart Rate Monitoring: It provides precise heart rate monitoring using an integrated photodetector and LED driver.
• Ambient Light Cancellation: The sensor module cancels out ambient light interference, ensuring accurate optical measurements.
• Low Power Consumption: The device is designed to operate with minimal power consumption, making it suitable for battery-powered applications.
• Programmable LED Current: The integrated LED driver allows the user to adjust the current for optimal performance.

Advantages and Disadvantages

Advantages: - High-performance sensor module - Small form factor - Accurate biopotential and heart rate monitoring - Low power consumption

Disadvantages: - Limited number of pins for additional functionalities - Requires external microcontroller for data processing

Working Principles

The MAX861IUA+T utilizes advanced analog and digital signal processing techniques to measure biopotential signals and perform optical heart rate monitoring. It uses an integrated photodetector to capture the reflected light from the skin and cancels out ambient light interference. The biopotential signals are amplified and filtered to provide accurate measurements.

Application Field Plans

The MAX861IUA+T can be used in various applications, including: 1. Wearable Health Monitoring Devices 2. Fitness Trackers 3. Smartwatches 4. Medical Diagnostic Equipment 5. Sports Performance Analysis Systems

Alternative Models

1. MAX30102: Similar functionality with a different package and pin configuration.
2. AD8232: Biopotential measurement IC with different features and specifications.
3. MAX30105: Optical heart rate monitoring IC with additional features like temperature measurement.

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