MAX86178
PRODUCTIONUltra-Low-Power, Clinical-Grade Vital-Sign AFE
Clinical Grade AFE Enables Smallest Wearable Remote Patient Monitor to Measure 4 Body Vital Signs
- Part Models
- 2
- 1ku List Price
- Starting From $5.83
Part Details
- 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
- 15.3 ENOB with 0.72μVRMS (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 ±1000mV (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
- 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
- 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
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
Documentation
Data Sheet 1
Technical Articles 2
Request an NDA
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
Request an NDAVideo 1
Analog Dialogue 1
Webcast 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX86178ENJ+ | 49-WLCSP-N/A | ||
| MAX86178ENJ+T | 49-WLCSP-N/A |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Internal Power Switch Buck-Boost Regulators 1 | ||
| MAX20343 | RECOMMENDED FOR NEW DESIGNS | Ultra-Low Quiescent Current, Low Noise 3.5W Buck-Boost Regulator |
| Optical AFEs 1 | ||
| MAX86176 | PRODUCTION | Ultra-Low-Power, Optical PPG and Single-Lead ECG AFE |
| PMIC (DC/DC, PowerPath, and Battery Charger) 1 | ||
| MAX20360 | RECOMMENDED FOR NEW DESIGNS | PMIC with Ultra-Low IQ Regulators, Charger, Fuel Gauge, and Haptic Driver for Small Li+ System |
Evaluation Kits
Evaluation Kit for the MAX86178
Resources
Reference Designs
Health Patch Platform: Chest-Based SpO2, ECG, Heart Rate, Respiration Rate, and Temperature Measurement
Part Used
Health Sensor Platform 4.0
Part Used
Design & Integration Tools
Videos
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Body Vitals on Wearables: Your Body, Talking to You
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Unboxing MAXREFDES106
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ADI´s Health Sensor Platform 4.0
