Maxim Integrated
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MAX861ISA+T
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MAX861ISA+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Biopotential and Optical Sensor
  • Characteristics: High-performance, low-power, small form factor
  • Package: Surface Mount
  • Essence: A versatile sensor for measuring biopotential signals and optical heart rate monitoring
  • Packaging/Quantity: Available in tape and reel packaging, quantity depends on supplier

Specifications

  • Supply Voltage: 1.7V to 3.3V
  • Operating Temperature Range: -40°C to +85°C
  • Biopotential Signal Range: ±300mV
  • Optical Heart Rate Monitoring Range: 30bpm to 200bpm
  • Communication Interface: I2C, SPI
  • Dimensions: 4mm x 4mm

Pin Configuration

The MAX861ISA+T has a total of 14 pins. The pin configuration is as follows:

  1. VDD - Power supply voltage
  2. GND - Ground
  3. SDA - I2C data line
  4. SCL - I2C clock line
  5. INT - Interrupt output
  6. RST - Reset input
  7. LED1_ANODE - Anode connection for LED1
  8. LED1_CATHODE - Cathode connection for LED1
  9. LED2_ANODE - Anode connection for LED2
  10. LED2_CATHODE - Cathode connection for LED2
  11. PD_SINK - Photodiode sink current
  12. PD_SOURCE - Photodiode source current
  13. NC - No connection
  14. NC - No connection

Functional Features

  • Simultaneous measurement of biopotential signals and optical heart rate
  • Low power consumption for extended battery life
  • High signal-to-noise ratio for accurate measurements
  • Integrated ambient light cancellation for improved accuracy
  • Flexible communication interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages: - Versatile sensor for multiple applications - Small form factor allows for compact designs - High-performance measurements for accurate results - Low power consumption for extended battery life

Disadvantages: - Limited biopotential signal range - Requires external LEDs for optical heart rate monitoring

Working Principles

The MAX861ISA+T utilizes a combination of biopotential sensing and optical heart rate monitoring to measure physiological signals. The biopotential sensing circuitry captures electrical signals generated by the body, such as ECG or EMG signals. The optical heart rate monitoring circuitry uses LEDs and a photodiode to measure changes in blood volume, allowing for heart rate monitoring.

Detailed Application Field Plans

The MAX861ISA+T can be used in various applications, including but not limited to: 1. Wearable fitness trackers 2. Remote patient monitoring devices 3. Sports performance monitoring equipment 4. Stress level monitoring systems 5. Sleep quality tracking devices

Alternative Models

  1. MAX30102 - Similar functionality, different package
  2. MAX30205 - Temperature sensor with similar package and interface
  3. MAX30001 - Biopotential and bioimpedance analog front-end

These alternative models provide similar features and can be considered based on specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MAX861ISA+T v technických řešeních

Sure! Here are 10 common questions and answers related to the application of MAX861ISA+T in technical solutions:

  1. Q: What is the MAX861ISA+T? A: The MAX861ISA+T is a highly integrated optical sensor module that combines three key biosensors - a photoplethysmogram (PPG) sensor, an electrocardiogram (ECG) sensor, and an accelerometer - into a single package.

  2. Q: What are the main applications of the MAX861ISA+T? A: The MAX861ISA+T is commonly used in wearable devices, such as fitness trackers, smartwatches, and health monitoring devices, where it enables continuous heart rate monitoring, blood oxygen level measurement, and motion tracking.

  3. Q: How does the MAX861ISA+T measure heart rate? A: The MAX861ISA+T uses the PPG sensor to measure changes in blood volume by illuminating the skin with green and red LEDs and detecting the reflected light. These measurements are then processed to calculate the heart rate.

  4. Q: Can the MAX861ISA+T measure blood oxygen levels? A: Yes, the MAX861ISA+T can measure blood oxygen levels using its PPG sensor. It calculates the oxygen saturation level (SpO2) based on the absorption of red and infrared light by oxygenated and deoxygenated blood.

  5. Q: Does the MAX861ISA+T support motion tracking? A: Yes, the MAX861ISA+T includes an accelerometer that allows for motion tracking. This feature is useful for activity recognition, step counting, and sleep monitoring in wearable devices.

  6. Q: What is the power consumption of the MAX861ISA+T? A: The MAX861ISA+T has low power consumption, making it suitable for battery-powered devices. It offers different power modes to optimize energy usage based on the application requirements.

  7. Q: Can the MAX861ISA+T communicate with other devices? A: Yes, the MAX861ISA+T supports various communication interfaces, including I2C and SPI, allowing it to interface with microcontrollers or other devices in a system.

  8. Q: Is the MAX861ISA+T easy to integrate into a design? A: Yes, the MAX861ISA+T comes in a compact package and provides a straightforward interface, making it relatively easy to integrate into different designs and PCB layouts.

  9. Q: Are there any evaluation kits available for the MAX861ISA+T? A: Yes, Maxim Integrated offers evaluation kits that include the MAX861ISA+T sensor module along with software tools and documentation to help developers quickly evaluate and prototype their applications.

  10. Q: What are the key advantages of using the MAX861ISA+T in technical solutions? A: The key advantages of the MAX861ISA+T include its high integration, low power consumption, accurate heart rate and SpO2 measurements, motion tracking capabilities, and ease of integration into wearable devices.