MAX861ESA/V+T

Product Overview

• Category: Integrated Circuit
• Use: Biopotential and Photoplethysmography (PPG) Sensor
• Characteristics: High precision, low power consumption, small form factor
• Package: 8-pin SOIC package
• Essence: The MAX861ESA/V+T is a versatile sensor designed for accurate biopotential and PPG measurements.
• Packaging/Quantity: Available in tape and reel packaging, quantity varies by supplier.

Specifications

• Power Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Biopotential Electrode Input Range: ±300mV
• LED Driver Current: Up to 50mA
• ADC Resolution: 18 bits
• Sampling Rate: Programmable up to 128sps

Detailed Pin Configuration

1. GND
2. Biopotential Negative Input
3. Biopotential Positive Input
4. LED Anode
5. LED Cathode
6. SCL
7. SDA
8. VCC

Functional Features

• Simultaneous biopotential and PPG signal acquisition
• Integrated LED driver with programmable current
• Low noise and high common-mode rejection ratio for accurate measurements
• I2C interface for communication with microcontrollers

Advantages and Disadvantages

Advantages

• High precision measurements
• Low power consumption
• Small form factor
• Versatile for various biopotential and PPG applications

Disadvantages

• Limited input range for biopotential signals
• Requires external filtering for some applications

Working Principles

The MAX861ESA/V+T utilizes a combination of optical and electrical sensors to measure biopotential and PPG signals. The integrated LED driver illuminates the skin, allowing the photodetector to capture the PPG waveform. Simultaneously, the biopotential electrodes acquire electrical signals from the body, enabling comprehensive health monitoring.

Detailed Application Field Plans

1. Wearable Health Devices: Integration into smartwatches and fitness trackers for continuous health monitoring.
2. Medical Monitoring Equipment: Inclusion in medical-grade devices for patient monitoring and diagnostics.
3. Sports and Fitness Equipment: Incorporation into sports performance analysis tools for real-time biometric data collection.

Detailed and Complete Alternative Models

1. MAX30102: A similar sensor with integrated red and IR LEDs for PPG measurements.
2. ADS1293: An alternative biopotential front-end with higher input range and additional features.

Note: The above information provides a comprehensive overview of the MAX861ESA/V+T sensor, its specifications, functional features, application fields, and alternative models.

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