MAX86178
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MAX86178

Ultra-Low-Power, Clinical-Grade Vital-Sign AFE

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Clinical Grade AFE Enables Smallest Wearable Remote Patient Monitor to Measure 4 Body Vital Signs

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Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $5.83
Features
  • PPG
    • Dual-Channel Optical Data-Acquisition System-
    • 115dB SpO2 System SNR; 112dB SNR at 16µA
    • Excellent Ambient Range and Rejection Capability
      • > 200µA Ambient Photodetector Current
      • > 90dB Ambient Rejection at 120Hz with Averaging
  • ECG
    • Clinical Grade ECG Acquisition System
      • 15.6 ENOB with 0.6μVRMS (0.05Hz to 40Hz)
      • 230fARMS Input-Current Noise (0.05Hz to 40Hz, +25°C)
    • Fully Differential Signal with CMRR > 110dB at 50Hz and 60Hz
    • High Input Impedance > 1GΩ for Extremely Low Common-to-Differential Mode Conversion
    • High DC-Differential Input Range of ±1300mV (typ 1.8V) Allows a Wide Variety of Electrodes to be Used
    • High AC-Dynamic Range of 200mVP-P Prevents Saturation Due to Motion, or Varying Half-Cell Potentials
  • BIOZ
    • High Performance BioZ Data Acquisition System
    • Low-Noise BioZ Receive Channel (17 ENOB, 0.16μVRMS)
    • Sine-Wave, Square-Wave, Current and Voltage Stimulus; 16Hz to 500kHz BIA/BIS Measurement with High Absolute Resistance and Reactance Accuracy
  • SYSTEM
    • Ultra-Low-Power Systems for Wearable Devices
    • DC and AC Lead-Off Detect Capability
    • Shutdown Current of 0.5μA (typ)
    • 256-Word FIFO for ECG, PPG, and BioZ
    • Flexible Interrupt and Multi-AFE Synchronization
    • FIFO Timing Data Allows Synchronized PPg, ECG, and BioZ
Additional Details
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The MAX86178 is a highly integrated, multiple vital-sign monitoring device with a complete photoplethysmogram (PPG), electrocardiogram (ECG) and biopotential (BioZ) analog front end (AFE) for wearable applications. The MAX86178 offers high performance for wellness and clinical applications with low power for long battery life.

The PPG data acquisition system supports up to 6 LEDs and 4 photodiode inputs. The LEDs are programmable from two high-current, 8-bit LED drivers. The receive path has two low-noise, high-resolution readout channels that each include independent 20-bit ADCs and industry-leading ambient light cancellation (ALC) circuits, producing the highest performing integrated optical data acquisition system on the market today.

The ECG channel has EMI filtering, internal lead biasing, right-leg drive, and extensive calibration voltages for built-in self-test. The ECG channel also has high-input impedance, low noise, high CMRR, programmable gain, an anti-aliasing low-pass filter, and a high-resolution ADC. It is designed to meet IEC 60601-2-47 Ambulatory ECG Systems monitoring compliance requirements.

The BioZ receive channel has EMI filtering and extensive calibration features. The BioZ receive channel also has high input impedance, low noise, programmable gain, low-pass and high-pass filter options, and a high-resolution ADC. There are several modes for generating input stimulus: balanced square-wave source/sink current, sine-wave current, and both sine-wave and square-wave voltage stimuli. A wide range of stimulus magnitudes and frequencies is available.

The MAX86178 has DC and AC lead-off detection, a flexible timing system, and a PLL. All three sensor channels are synchronized. The MAX86178 is available in a 7 x 7 49-bump wafer-level package (WLP) with package dimensions of 2.77mm x 2.57mm, and operates over -40°C to +85°C temperature range.

Applications

  • Ambulatory Heart Monitors
  • Impedance Cardiography/Hemodynamic Monitors
  • Pulse Arrival Time (PAT), Pulse Travel Time (PTT), Pulse Wave Velocity (PWV) Assessments
  • Pulse-Oximetry Devices
  • Single- and Multi-Frequency Bioimpedance Analysis
  • Smart-Clothing Applications
  • Wearable Vital-Sign Monitors
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.
Part Models 2
1ku List Price Starting From $5.83

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Documentation

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Product Lifecycle

PCN

Mar 7, 2022

- 2230

DESIGN

MAX86178ENJ+

PRODUCTION

MAX86178ENJ+T

PRODUCTION

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PCN

Mar 7, 2022

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DESIGN

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PRODUCTION

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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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MAX86178EVKIT

Evaluation Kit for the MAX86178

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MAX86178EVKIT

Evaluation Kit for the MAX86178

Evaluation Kit for the MAX86178

Features and Benefits

  • Convenient Platform to Evaluate the MAX86178
  • Many Easy-to-Reach Test Points
  • Real-Time Monitoring and Plotting
  • Data Logging Capabilities
  • Bluetooth® LE
  • Windows®-10-Compatible GUI Software
  • Facilitates IEC 60601-2-47 Compliance Testing

Product Detail

The MAX86178 evaluation kit (EV kit) provides a platform to evaluate the functionality and features of the MAX86178 with photoplethysmogram (PPG), electrocardiogram (ECG), and bioimpedance (BioZ) measurement capabilities. The EV kit allows for flexible hardware and software configurations to help the user quickly learn how to configure and optimize the MAX86178 for their own applications.

The MAX86178 is a complete PPG, ECG, and BioZ analog front-end solution that consists of two optical readout channels, one single-lead ECG channel, and a BioZ channel that supports both tetrapolar and bipolar electrode configurations, all of which can operate simultaneously. The optical readout channels support up to 6 LEDs and 4 photodiode inputs. The BioZ channel supports several modes of stimulation: square-wave sink/ source currents, sine-wave currents, sine-wave voltages, and square-wave voltages with a range of frequencies to support multiple BioZ applications.

The MAX86178 EV kit consists of two boards. MAXSENSORBLE_EVKIT_B is the microcontroller (MCU) board while MAX86178_EVKIT_C is the sensor board containing the MAX86178. To enable PPG and ECG measurement capabilities, the sensor board also contains 3 LEDs (red, green, and IR), 3 discrete photodiodes (Vishay VEMD8080), and component configurations on the ECG and BioZ channels. The EV kit can be powered through a USB connection to a PC using a USB-C to USB-A cable or a LiPo Battery. The EV kit contains the latest firmware and comes with the MAXDAP-TYPE-C programming circuit board in case a firmware change is needed.

Applications

  • Ambulatory Heart Monitors
  • Impedance Cardiography/Hemodynamic Monitors
  • Pulse Arrival Time (PAT), Pulse Travel Time (PTT), Pulse Wave Velocity (PWV) Assessments
  • Pulse-Oximetry Devices
  • Single- and Multi-Frequency Bioimpedance Analysis
  • Smart-Clothing Applications
  • Wearable Vital-Sign Monitors
Reference Designs

Reference Designs 2

MAXREFDES106 Health Sensor Platform 4.0

Health Sensor Platform 4.0

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MAXREFDES106

Health Sensor Platform 4.0

Health Sensor Platform 4.0

Features and Benefits

Features

  • Photoplethysmography (PPG)
  • Biopotential Measurement (ECG)
  • Bioimpedance Measurement (BioZ)
  • Skin and Ambient Temperature
  • Embedded Heart Rate (HR), Respiration Rate (RR), Oxygen Saturation (SpO2), Impedance Cardiography (ICG), and Body Impedance Analysis (BIA) Algorithms
  • Location Finder to Determine the Optimal Placement Location on the Chest
  • Motion and Acceleration
  • Chest-Worn Form Factor

Application

  • Remote Patient Monitoring/Vital Sign Patch
View Detailed Reference Design external link

Design & Integration Tools

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Videos

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ADI´s Health Sensor Platform 4.0

MAXREFDES282# Health Patch Platform: Chest-Based SpO2, ECG, Heart Rate, Respiration Rate, and Temperature Measurement

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