Healthcare IoT


With the healthcare technologies being researched and developed today, remote patient monitoring and diagnostics could replace some doctor’s office visits tomorrow. Wearable devices as small as patches could be used to measure vital signs and, perhaps, administer treatments. Making this possible are an array of sensors, low-power microprocessors and, to protect all of the sensitive data being collected and transmitted, embedded security technologies.



Applications


Sensing

Sensing solutions are enhancing quality of life by monitoring a variety of health parameters, such as heart rate, blood-oxygen levels, and blood pressure. Human body sensors output magnitude signals in the millivolt and microvolt ranges. Our integrated devices for wearable health applications combine sensors with amplification and conversion circuits within a single die or package. These small, high-accuracy solutions provide higher magnitude analog outputs or serialized digital outputs.

MAX30101 High-Sensitivity Pulse Oximeter and Heart-Rate Sensor
MAX30205 Human Body Temperature Sensor

Processing

Power usage and processing capabilities are important selection criteria for micro-processing applications. To determine which system functions are best integrated into the microcontroller and which can be handled externally, it’s most effective to use a system partitioning strategy. Since wearable health devices read human body signals, the capabilities of any on-chip analog circuitry must also be considered to ensure they can accurately process low-level signals.

MAX30003 Ultra-Low-Power, Single Channel Integrated Biopotential and Bioimpedance

Power

Given the small form factor of health-monitoring systems—such as medical patches and other wearables—low power consumption and long battery life are essential. The power system in these devices must be able to regulate voltage from a battery—a voltage source with a declining voltage output. The regulators must be efficient enough to maximize charge usage, and must also supply all of the power rails required by the design. The usable voltage range of a rechargeable Li+ battery ranges from 4.2V to approximately 3.2V. Most wearable products use main power rails that are below the minimum charge of a single-cell Li+ battery, so the main rails are typically sourced by a step-down regulator. Some functions within a wearable product may require a higher voltage level than that provided by a single-cell battery. Thus, the power management function must contain at least one step-up regulator. The number of rails required depends on the device, but for optimum efficiency it is best to minimize the total number of rails.

Power Management ICs for Wearable Health Applications 

Security

Sensitive personal data collected and transmitted by wearable and mobile medical systems needs to be protected from the security breaches that are becoming all too common. Our embedded security technologies protect against tampering, cloning, counterfeiting, and other malicious attacks.

DS28E15 DeepCover Secure Authenticator
DS28E22 DeepCover Secure Authenticator
DS28E25 DeepCover Secure Authenticator
DS28C22 DeepCover Secure Memory
DS28E35 DeepCover Cryptographic Controller


Featured Products


Ultra-Low-Power, Single-Channel Integrated Biopotential AFE

MAX30003

Secure authenticator features factory-programmed, unique 64-bit ROM identification number.

MAX30205 Evaluation System

MAX30205EVKIT

System to evaluate the MAX30205 human body temperature sensor. Includes a USB-to-I2C controller and GUI.

Learn more ›

Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM

DS28E15

Secure authenticator features factory-programmed, unique 64-bit ROM identification number.

High-Sensitivity Pulse Oximeter and Heart-Rate Sensor

MAX30101

Sensor includes internal LEDs, photodetectors, optical elements, and low-noise electronics with ambient light rejection.

Human Body Temperature Sensor

MAX30205

Sensor accurately measures temperature and provides overtemperature alarm/interrupts/shutdown output.

Secure Memory with I2C SHA-256 and 3Kb User EEPROM

DS28C22

Secure memory features crypto-strong, bidirectional, secure challenge-and-response authentication.


Solutions


Learn more about our Healthcare Solutions, including relevant applications, featured products, and technical resources.

Resources



Body Temperature Measurement: Send and Receive With Wearable NFC
2:00 min
November 2014



Pulse Oximetry Measurement: Wearable Oxygen Monitor for Active Lifestyles
2:06 min
November 2014



Wellness Watch: A Wearable Wellness Platform Example
2:25 min
November 2014



Fit Two Shirt: A Wearable Wellness Platform Example
2:08 min
November 2014



Heart Rate Monitor Demo
25:30 min
August 2016



Make High-Accuracy Biopotential and BioZ Measurements with MAX30001
3:52 min
November 2017



Wristband Health Monitoring Demo with MAX86141
4:55 min
November 2017