Electrocardiogram (ECG) Measurement Solutions

The AD5940 and AD5941 are high precision, low power analog front ends (AFEs) designed for portable applications that require high precision, electrochemical-based measurement techniques, such as amperometric, voltammetric, or impedance measurements. The AD5940/AD5941 is designed for skin impedance and body impedance measurements, and works with the AD8233 AFE in a complete bioelectric or biopotential measurement system. The AD5940/AD5941 is designed for electrochemical toxic gas sensing.

The AD5940/AD5941 consist of two high precision excitation loops and one common measurement channel, which enables a wide capability of measurements of the sensor under test. The first excitation loop consists of an ultra low power, dual-output string, digital-to-analog converter (DAC), and a low power, low noise potentiostat. One output of the DAC controls the noninverting input of the potentiostat, and the other output controls the noninverting input of the transimpedance amplifier (TIA). This low power excitation loop is capable of generating signals from dc to 200 Hz.

The second excitation loop consists of a 12-bit DAC, referred to as the high speed DAC. This DAC is capable of generating high frequency excitation signals up to 200 kHz.

The AD5940/AD5941 measurement channel features a 16-bit, 800 kSPS, multichannel successive approximation register (SAR) analog-to-digital converter (ADC) with input buffers, a built in antialias filter, and a programmable gain amplifier (PGA). An input multiplexer (mux) in front of the ADC allows the user to select an input channel for measurement. These input channels include multiple external current inputs, external voltage inputs, and internal channels. The internal channels allow diagnostic measurements of the internal supply voltages, die temperature, and reference voltages.

The current inputs include two TIAs with programmable gain and load resistors for measuring different sensor types. The first TIA, referred to as the low power TIA, measures low bandwidth signals. The second TIA, referred to as the high speed TIA, measures high bandwidth signals up to 200 kHz.

An ultra low leakage, programmable switch matrix connects the sensor to the internal analog excitation and measurement blocks. This matrix provides an interface for connecting external transimpedance amplifier resistors (R_TIAs) and calibration resistors. The matrix can also be used to multiplex multiple electronic measurement devices to the same wearable electrodes.

A precision 1.82 V and 2.5 V on-chip reference source is available. The internal ADC and DAC circuits use this on-chip reference source to ensure low drift performance for the 1.82 V and 2.5 V peripherals.

The AD5940/AD5941 measurement blocks can be controlled via direct register writes through the serial peripheral interface (SPI) interface, or, alternatively, by using a preprogrammable sequencer, which provides autonomous control of the AFE chip. 6 kB of static random access memory (SRAM) is partitioned for a deep data first in, first out (FIFO) and command FIFO. Measurement commands are stored in the command FIFO and measurement results are stored in the data FIFO. A number of FIFO related interrupts are available to indicate when the FIFO is full.

A number of general-purpose inputs/outputs (GPIOs) are available and controlled using the AFE sequencer. The AFE sequencer allows cycle accurate control of multiple external sensor devices.

The AD5940/AD5941 operate from a 2.8 V to 3.6 V supply and are specified over a temperature range of −40°C to +85°C. The AD5940 is packaged in a 56-lead, 3.6 mm × 4.2 mm WLCSP. The AD5941 is packaged in a 48-lead LFCSP.

APPLICATIONS

• Electrochemical measurements
• Electrochemical gas sensors
• Potentiostat/amperometric/voltammetry/cyclic voltammetry
• Bioimpedance applications
  
  • Skin impedance
  • Body impedance
• Continuous glucose monitoring
• Battery impedance

The ADPD4100/ADPD4101 operate as a complete multimodal sensor front end, stimulating up to eight light emitting diodes (LEDs) and measuring the return signal on up to eight separate current inputs. Twelve time slots are available, enabling 12 separate measurements per sampling period.

The data output and functional configuration utilize an I²C interface on the ADPD4101 or a serial port interface (SPI) on the ADPD4100. The control circuitry includes flexible LED signaling and synchronous detection. The devices use a 1.8 V analog core and 1.8 V/3.3 V compatible digital input/output (I/O).

The analog front end (AFE) rejects signal offsets and corruption from asynchronous modulated interference, typically from ambient light, eliminating the need for optical filters or externally controlled dc cancellation circuitry. Multiple operating modes are provided, enabling the ADPD4100/ADPD4101 to be a sensor hub for synchronous measurements of photodiodes, biopotential electrodes, resistance, capacitance, and temperature sensors. The multiple operation modes accommodate various sensor measurements, including, but not limited to, photoplethysmography (PPG), electrocardiography (ECG), electrodermal activity (EDA), impedance, capacitance, temperature, gas detection, smoke detection, and aerosol detection for various healthcare, industrial, and consumer applications.

The ADPD4100/ADPD4101 are available in a 3.11 mm × 2.14 mm, 0.4 mm pitch, 33-ball WLCSP and 35-ball WLCSP

Applications

• Wearable health and fitness monitors: heart rate monitors (HRMs), heart rate variability (HRV), stress, blood pressure estimation, SpO2, hydration, body composition
• Industrial monitoring: CO, CO2, smoke, and aerosol detection
• Home patient monitoring

The ADPD4100/ADPD4101 operate as a complete multimodal sensor front end, stimulating up to eight light emitting diodes (LEDs) and measuring the return signal on up to eight separate current inputs. Twelve time slots are available, enabling 12 separate measurements per sampling period.

The data output and functional configuration utilize an I²C interface on the ADPD4101 or a serial port interface (SPI) on the ADPD4100. The control circuitry includes flexible LED signaling and synchronous detection. The devices use a 1.8 V analog core and 1.8 V/3.3 V compatible digital input/output (I/O).

The analog front end (AFE) rejects signal offsets and corruption from asynchronous modulated interference, typically from ambient light, eliminating the need for optical filters or externally controlled dc cancellation circuitry. Multiple operating modes are provided, enabling the ADPD4100/ADPD4101 to be a sensor hub for synchronous measurements of photodiodes, biopotential electrodes, resistance, capacitance, and temperature sensors. The multiple operation modes accommodate various sensor measurements, including, but not limited to, photoplethysmography (PPG), electrocardiography (ECG), electrodermal activity (EDA), impedance, capacitance, temperature, gas detection, smoke detection, and aerosol detection for various healthcare, industrial, and consumer applications.

The ADPD4100/ADPD4101 are available in a 3.11 mm × 2.14 mm, 0.4 mm pitch, 33-ball WLCSP and 35-ball WLCSP

Applications

• Wearable health and fitness monitors: heart rate monitors (HRMs), heart rate variability (HRV), stress, blood pressure estimation, SpO2, hydration, body composition
• Industrial monitoring: CO, CO2, smoke, and aerosol detection
• Home patient monitoring

The MAX30001 is a complete, biopotential and bioimpedance (BioZ), analog front-end (AFE) solution for wearable applications. It offers high performance for clinical and fitness applications, with ultra-low power for long battery life. The MAX30001 is a single biopotential channel providing electrocardiogram (ECG) waveforms, heart rate and pacemaker edge detection, and a single bioimpedance channel capable of measuring respiration.

The biopotential and bioimpedance channels have ESD protection, EMI filtering, internal lead biasing, DC leads-off detection, ultra-low-power, leads-on detection during standby mode, and extensive calibration voltages for built-in self-test. Soft power-up sequencing ensures no large transients are injected into the electrodes. Both channels also have high input impedance, low noise, high CMRR, programmable gain, various low-pass and high-pass filter options, and a high resolution analog-to-digital converter. The biopotential channel is DC coupled, can handle large electrode voltage offsets, and has a fast recovery mode to quickly recover from overdrive conditions, such as defibrillation and electro-surgery. The bioimpedance channel includes integrated programmable current drive, works with common electrodes, and has the flexibility for 2 or 4 electrode measurements. The bioimpedance channel also has AC lead off detection.

The MAX30001 is available in a 30-bump wafer-level package (WLP), operating over the 0°C to +70°C commercial temperature range.

Applications

• Bio Authentication and ECG-On-Demand Applications
• Chest Band Heart Rate Monitors for Fitness Applications
• Impedance Based Heart Rate Detection
• Respiration and Hydration Monitors
• Single-Lead Event Monitors for Arrhythmia Detection
• Single-Lead Wireless Patches for In-Patient/Out-Patient Monitoring

The MAX86176 is a complete photoplethysmogram (PPG) and electrocardiogram (ECG) analog front-end (AFE) solution for wearable applications. The MAX30005 is a complete AFE solution for ECG only. Both AFEs offer high performance for fitness and clinical applications with ultra-low power for long battery life.

Both MAX86176 and MAX30005 feature an ECG channel, EMI filtering, internal-lead biasing, AC and DC lead-off detection, right-leg drive, ultra-low power DC lead-on detection during standby mode, and extensive calibration voltages for built in self-test. In addition, the MAX86176 has a PPG data acquisition system supporting up to 6 LEDs and 4 photodiode inputs, which is fully synchronized with the ECG signal path. The MAX86176/MAX30005 can operate with either internal or external clock. The MAX86176/MAX30005 are designed to meet IEC 60601-2-47 Ambulatory ECG Systems monitoring compliance for even the most challenging dry electrode applications.

The MAX86176/MAX30005 are available in a 6x6 36-bump wafer-level packages (WLP), operating over the -40ºC to +85ºC temperature range.

Applications

• PPG (MAX86176): Wearable Devices for Fitness, Wellness and Medical Applications with Clinical Accuracy
• PPG (MAX86176): Suitable for Wrist, Finger, Ear and Other Locations
• PPG (MAX86176): Optimized Performance to Detect Heart Rate, Oxygen Saturation (SpO₂), Muscle and Tissue Oxygen Saturation(SmO₂ and StO₂), and Body Hydration
• ECG (MAX86176/MAX30005): Single-Lead Event Monitors for Atrial Fibrillation (AFib) and other Arrhythmia Detection
• ECG (MAX86176/MAX30005): Single-Lead Wireless Patches for At-Home/In-Hospital Monitoring
• ECG (MAX86176/MAX30005): Chest-Band Heart-Rate Monitors for Fitness Applications
• ECG (MAX86176/MAX30005): Biometric Authentication and ECG-on-Demand Applications
• PPG-ECG SYNC (MAX86176): Fully Synchronized PPG and ECG Signal Path for PTT Measurements

The MAX86176 is a complete photoplethysmogram (PPG) and electrocardiogram (ECG) analog front-end (AFE) solution for wearable applications. The MAX30005 is a complete AFE solution for ECG only. Both AFEs offer high performance for fitness and clinical applications with ultra-low power for long battery life.

Both MAX86176 and MAX30005 feature an ECG channel, EMI filtering, internal-lead biasing, AC and DC lead-off detection, right-leg drive, ultra-low power DC lead-on detection during standby mode, and extensive calibration voltages for built in self-test. In addition, the MAX86176 has a PPG data acquisition system supporting up to 6 LEDs and 4 photodiode inputs, which is fully synchronized with the ECG signal path. The MAX86176/MAX30005 can operate with either internal or external clock. The MAX86176/MAX30005 are designed to meet IEC 60601-2-47 Ambulatory ECG Systems monitoring compliance for even the most challenging dry electrode applications.

The MAX86176/MAX30005 are available in a 6x6 36-bump wafer-level packages (WLP), operating over the -40ºC to +85ºC temperature range.

Applications

• PPG (MAX86176): Wearable Devices for Fitness, Wellness and Medical Applications with Clinical Accuracy
• PPG (MAX86176): Suitable for Wrist, Finger, Ear and Other Locations
• PPG (MAX86176): Optimized Performance to Detect Heart Rate, Oxygen Saturation (SpO₂), Muscle and Tissue Oxygen Saturation(SmO₂ and StO₂), and Body Hydration
• ECG (MAX86176/MAX30005): Single-Lead Event Monitors for Atrial Fibrillation (AFib) and other Arrhythmia Detection
• ECG (MAX86176/MAX30005): Single-Lead Wireless Patches for At-Home/In-Hospital Monitoring
• ECG (MAX86176/MAX30005): Chest-Band Heart-Rate Monitors for Fitness Applications
• ECG (MAX86176/MAX30005): Biometric Authentication and ECG-on-Demand Applications
• PPG-ECG SYNC (MAX86176): Fully Synchronized PPG and ECG Signal Path for PTT Measurements

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

The ADAS1000 measures electro cardiac (ECG) signals, thoracic impedance, pacing artifacts, and lead-on/lead-off status and output this information in the form of a data frame supplying either lead/vector or electrode data at programmable data rates. Its low power and small size make it suitable for portable, battery-powered applications. The high performance also makes it suitable for higher end diagnostic machines.

The ADAS1000 is a full-featured, 5-channel ECG including respiration and pace detection, while the ADAS1000-1 offers only ECG channels with no respiration or pace features. Similarly, the ADAS1000-2 is a subset of the main device and is configured for gang purposes with only the ECG channels enabled (no respiration, pace, or right leg drive). The ADAS1000/ADAS1000-1/ADAS1000-2 are designed to simplify the task of acquiring and ensuring quality ECG signals. They provide a low power, small data acquisition system for biopotential applications. Auxiliary features that aid in better quality ECG signal acquisition include multichannel averaged driven lead, selectable reference drive, fast overload recovery, flexible respiration circuitry returning magnitude and phase information, internal pace detection algorithm operating on three leads, and the option of ac or dc lead-off detection. Several digital output options ensure flexibility when monitoring and analyzing signals. Value-added cardiac post processing is executed externally on a DSP, microprocessor, or FPGA.

Because ECG systems span different applications, the ADAS1000/ADAS1000-1/ADAS1000-2 feature a power/noise scaling architecture where the noise can be reduced at the expense of increasing power consumption. Signal acquisition channels can be shut down to save power. Data rates can be reduced to save power.

To ease manufacturing tests and development as well as offer holistic power-up testing, the ADAS1000/ADAS1000-1/ADAS1000-2 offer a suite of features, such as dc and ac test excitation via the calibration DAC and cyclic redundancy check (CRC) redundancy testing, in addition to readback of all relevant register address space.

The input structure is a differential amplifier input, thereby allowing users a variety of configuration options to best suit their application.

The ADAS1000/ADAS1000-1/ADAS1000-2 are available in two package options, a 56-lead LFCSP package and a 64-lead LQFP package. Both packages are specified over a −40°C to +85°C temperature range.

Applications

• Bedside Patient Monitoring
• Portable Telemetry
• Holter
• AED
• Cardiac Defibrillators
• Ambulatory Monitors
• Pace Maker Programmer
• Patient Transport
• Stress testing

The ADAS1021 is a highly integrated, analog front end (AFE) designed for measurement of patient biopotential information. The primary measurement performed is electrocardiogram (ECG) activity, where the ADAS1021 employs dedicated Σ-Δ analog-to-digital converters (ADCs) per channel to acquire and digitize on a lead basis. The signal acquisition is architected to support low noise, diagnostic level measurement in the presence of a variety of interferers.

The ADAS1021 also includes three dedicated successive approximation register (SAR) ADCs to digitize the high frequency pacemaker content that is analyzed by the on-chip pacemaker detection algorithm.

A dedicated and flexible impedance measurement block captures impedance variation during patient respiration and is available on multiple leads.

The ADAS1021 has a number of complementary features supporting ECG measurement: driven reference for common-mode rejection and lead-off detection that identifies if an electrode connection is degrading or has fallen off. The product also includes a shield drive amplifier to bias the shield of the cable.

Applications

• Portable and line powered ECG monitor and diagnostic measurement
• Battery powered ECG equipment

The ADPD6000 is a highly integrated analog front end (AFE) designed for measuring various vital signals.

The optical channel is designed as an optical transceiver, stimulating up to four light emitting diodes (LEDs) and measuring the return signal on up to four separate current inputs. The signal chain rejects signal offsets and corruption from asynchronous modulated interference, typically from ambient light, eliminating the need for optical filters or externally controlled dc cancellation circuitry.

The electrocardiography (ECG) signal acquisition is designed to support low noise, diagnostic level measurement in the presence of a variety of interferers. The ECG signal chain has a number of complementary features supporting ECG measurement, such as driven reference for common-mode rejection and lead off detection to identify a fallen electrode.

The body impedance analysis (BIA) signal chain is designed for body impedance measurement with a configurable excitation path and measurement path. A 12-bit digital-to-analog (DAC) is used in the excitation path to generate the sinusoid wave and high precision measurement, with configurable filters used to measure the body response of the stimulus.

The data output and functional configuration use a serial port interface (SPI) on the ADPD6000. The control circuitry includes flexible LED signaling and synchronous detection, digital filters, digital wave generators, and configurable filters.

The ADPD6000 is available in a 2.6 mm × 2.6 mm, 0.4 mm pitch, 36-ball wafer level chip scale package (WLCSP).

APPLICATIONS

• Wearable health and fitness monitors: heart rate, heart rate variability, SpO2, body impedance analysis, hydration, cuffless noninvasive blood pressure
• Home patient monitoring
• Industrial monitoring: particle and aerosol, gas, and conductivity detection

The AD5940 is specifically designed for bio-impedance applications including Body Impedance Analysis (BIA) and Electrodermal Activity (EDA). This evaluation kit includes the EVAL-ADICUP3029 Arm^® Cortex^™-M3 microcontrollerbased Arduino Uno form factor board, the EVAL-AD5940BIOZ which contains the AD5940 for bio-impedance and the AD8233 for ECG measurements and also custom micro USB - ECG snap connectors.

The EVAL-ADPD4100Z-PPG evaluation board provides users with a simple means of evaluating the ADPD4100/ADPD4101 photometric front end.

The EVAL-ADPD4100Z-PPG evaluation board implements a simple discrete optical design for vital signs monitoring applications, specifically wrist-based photoplethysmography (PPG).

The EVAL-ADPD4100Z-PPG has three green light emitting diodes (LEDs), one infrared (IR), and one red LED, all separately driven. A single 7 mm² photodiode (PD) is populated on the board. The PD has no optical filter coating. However, a pin for pin alternative device with an IR block filter is available.

The full evaluation system includes the Wavetool Evaluation Software graphical user interface (GUI) that provides users with low level register access and high level system configurability. Raw data streamed to this tool can be displayed in real time with limited latency. Views are provided for both frequency and time domain analysis.

A user datagram protocol (UDP) transfer capability from the Wavetool Evaluation Software (available for download on the EVAL-ADPD4100Z-PPG product page) allows data stream connections and register configurability to external analysis programs, such as LabVIEW^® or MATLAB^®, in real time.

The EVAL-ADPD4100Z-PPG board is powered by the EVAL-ADPDUCZ microcontroller board (obtained from the EVAL-ADPD4100Z-PPG product page). In addition to the power requirements, serial port interface (SPI) (default) or I2 C data streams are received from the ADPD4100 by the microcontroller. A ribbon cable connects the two boards. The microcontroller repackages the data, sending it to a virtual serial port over the USB to the PC, displayed on the Wavetool Evaluation Software. The EVAL-ADPD4100Z-PPG can also be connected directly to the microcontroller development system of the user, using the SPI for the ADPD4100 (or I²C for the ADPD4101).

The ADPD4100/ADPD4101 data sheet, available at www.analog.com, provides full specifications for the ADPD4100/ADPD4101. Consult the ADPD4100/ADPD4101 data sheet in conjunction with this user guide when using the EVAL-ADPD4100Z-PPG.

The MAX30001 evaluation system (EV system) provides a single platform to evaluate the functionality and features of the MAX30001 with Biopotential (ECG, R-to-R, and Pace Detection) and Bioimpedance (BioZ) measurement capabilities. The EV system includes a MAX30001 evaluation kit (EV kit) and a MAX32630FTHR Cortex-M4F microcontroller for wearables. The MAX32630FTHR provides power to the MAX30001 EV kit and contains the firmware necessary to use the EV kit GUI program. The EV kit ships with jumpers installed and supply voltages set to typical operating values. Optional connections exist which can be shunted to make use of different functionalities.

This EV system is not a medical device.

Applications

• Bio Authentication and ECG-On-Demand Applications
• Chest Band Heart Rate Monitors for Fitness Applications
• Impedance Based Heart Rate Detection
• Respiration and Hydration Monitors
• Single-Lead Event Monitors for Arrhythmia Detection
• Single-Lead Wireless Patches for In-Patient/Out-Patient Monitoring

The MAX30005 evaluation kit (EV kit) provides a platform to evaluate the functionality and features of the MAX30005 electrocardiogram (ECG) measurement capabilities. The EV kit contains flexible hardware and software configurations to help the user quickly learn how to configure and optimize the MAX30005 for their own applications. The MAX30005 is a complete ECG analog front-end solution that features a single-lead ECG channel equipped with EMI filtering, internal lead biasing, AC and DC leadsoff detection, ultra-low power lead-on detection, calibration voltages, and right leg drive.

The MAX30005 EV kit consists of two boards; MAXSENSORBLE_EVKIT_B is the microcontroller (MCU) board while MAX30005_EVKIT_B is the sensor board containing the MAX30005. The EV kit can be powered through USB connection to PC using a USB-C to USB-A cable or a Li-Po Battery. The EV kit communicates with MAX86176_MAX30005 GUI (should be installed in the user system) via Bluetooth^® (WIN BLE). The EV kit contains the latest firmware but comes with the programming circuit board MAXDAP-TYPE-C in case a firmware change is needed.

The MAX30005 EVK PCB is designed to provide maximum flexibility for the demonstration of the MAX30005. Because of this flexibility, the MAX30005 might not achieve all of the data sheet performance specifications when operating on this PCB.

Applications

• PPG (MAX86176): Wearable Devices for Fitness, Wellness and Medical Applications with Clinical Accuracy
• PPG (MAX86176): Suitable for Wrist, Finger, Ear and Other Locations
• PPG (MAX86176): Optimized Performance to Detect Heart Rate, Oxygen Saturation (SpO₂), Muscle and Tissue Oxygen Saturation(SmO₂ and StO₂), and Body Hydration
• ECG (MAX86176/MAX30005): Single-Lead Event Monitors for Atrial Fibrillation (AFib) and other Arrhythmia Detection
• ECG (MAX86176/MAX30005): Single-Lead Wireless Patches for At-Home/In-Hospital Monitoring
• ECG (MAX86176/MAX30005): Chest-Band Heart-Rate Monitors for Fitness Applications
• ECG (MAX86176/MAX30005): Biometric Authentication and ECG-on-Demand Applications
• PPG-ECG SYNC (MAX86176): Fully Synchronized PPG and ECG Signal Path for PTT Measurements

The MAX86176 evaluation kit (EV kit) provides a platform to evaluate the functionality and features of the MAX86176 with photoplethysmogram (PPG) and electrocardiogram (ECG) measurement capabilities. The EV kit allows for flexible hardware and software configurations to help the user quickly learn how to configure and optimize the MAX86176 for their own applications.

The MAX86176 is a complete PPG and ECG analog front-end solution that consists of two optical readout channels and one single-lead ECG channel that can operate simultaneously. The optical readout channels support up to 6 LEDs and 4 photodiode inputs.

The MAX86176 EV kit consists of two boards. MAXSENSORBLE_HEADER_EVKIT_A is the microcontroller (MCU) board while MAX86176_EVKIT_A is the sensor board containing the MAX86176. To enable PPG and ECG measurement capabilities, the sensor board also contains 3 LEDs (red, green, and IR), 3 discrete photodiodes (Vishay VEMD8080), a 3 LED, 1 photodiode module (Osram SFH7050), and component configurations on the ECG channel. The EV kit can be powered through USB connection to PC using a USB-C to USB-A cable or a LiPo Battery. The EV kit relays data using Bluetooth through the Cypress USB Bluetooth LE dongle. The EV kit contains with the latest firmware but comes with the programming circuit board MAXREFDES100HDK in case a firmware change is needed.

Applications

• ECG (MAX86176/MAX30005): Biometric Authentication and ECG-on-Demand Applications
• ECG (MAX86176/MAX30005): Chest-Band Heart-Rate Monitors for Fitness Applications
• ECG (MAX86176/MAX30005): Single-Lead Event Monitors for Atrial Fibrillation (AFib) and other Arrhythmia Detection
• ECG (MAX86176/MAX30005): Single-Lead Wireless Patches for At-Home/In-Hospital Monitoring
• PPG (MAX86176): Optimized Performance to Detect Heart Rate, Oxygen Saturation (SpO2), Muscle and Tissue Oxygen Saturation(SmO2 and StO2), and Body Hydration
• PPG (MAX86176): Suitable for Wrist, Finger, Ear and Other Locations
• PPG (MAX86176): Wearable Devices for Fitness, Wellness and Medical Applications with Clinical Accuracy
• PPG-ECG SYNC (MAX86176): Fully Synchronized PPG and ECG Signal Path for PTT Measurements

The EVAL-ADAS1000SDZ is a fully featured evaluation kit for the ADAS1000. The evaluation kit consists of an evaluation board kitted with 2 ADAS1000 devices capable of demonstrating ECG capture up to 12 leads. Included in the kit is a medical grade +5V wall adaptor with interchangeable worldwide wall plugs and a CD with user software for data capture and display. The software allows control of all ADAS1000 registers, ability to capture and display ECG data, respiration data, pace pulse detection and store data for offline processing. This evaluation board is provided for silicon evaluation purposes and is not designed to be connected directly to animal or human. This board operates in conjunction with the System Development Platform (SDP) or alternatively may be interfaced to directly via a dedicated serial interface connector (J4). The SDP controller board connects to the PC via USB 2.0. The evaluation board connects to the SDP controller board. The ADAS1000 evaluation board cannot be connected directly to the PC. The evaluation software running on the PC will communicate with the evaluation board through the SDP Controller board. The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.

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 photodi-odes (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 communicates with the MAX86178GUI (should be installed in user’s system) through Bluetooth (WINBLE). 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

This user guide describes the operation of the EVAL-ADPD6000Z demonstration kit, which is an evaluation module for the ADPD6000.

The ADPD6000 is a fully integrated analog front end (AFE) for wearable vital signal monitoring (VSM) devices. The key functions of the ADPD6000 include photoplethysmography (PPG), electrocardiography (ECG), and body impedance analysis (BIA).

The demonstration kit includes both software and hardware. The EVAL-ADPD6000Z can evaluate the AFE feature and verify the system design based on the AFE. According to the requirements of the application, the user can use a cable connection or Bluetooth connection to establish communication between the PC and the EVAL-ADPD6000Z.

This user guide also describes the example configuration of the different functions of the ADPD6000.

For full details on the ADPD6000, see the ADPD6000 data sheet, which must be consulted in conjunction with the user guide when using the EVAL-ADPD6000Z.

The AD5940 is specifically designed for high precision analysis of electrochemical cells. This evaluation kit is designed to easily configure the AD5940 to perform electrochemical measurements on a typical electrochemical cell. The evaluation kit includes the EVAL-ADICUP3029 Arm^® Cortex^™-M3 microcontrollerbased Arduino Uno form factor board, the EVAL-AD5940ELCZ daughter board and custom micro USB to crocodile cables to connect the hardware to various chemistry setups.

This reference design provides information about preparing and operating the MAXREFDES282: Health Patch Platform. This platform uses high-sensitivity Photoplethysmogram (PPG), Electrocardiogram (ECG), Bio Impedance (BioZ) and temperature biosensors, and two power-management IC (PMIC) from Maxim Integrated^®, now part of Analog Devices^®, in a chest-patch design to capture biometric signals important for healthcare. The platform integrates algorithms to calculate those vital signs including heart rate (HR), respiration rate (RR), and blood oxygenation (SpO₂) based on the biosensors measurement data. The vital signs data can be displayed on a Windows^® GUI in real-time and logged to a local file for further study. This is a demonstration only reference design. The schematic, layout, and manufacturing files are not available.

Wearable and supporting documentation are available under NDA only.*

The MAXREFDES104# is a unique evaluation and development platform in a wearable form factor that demonstrates the functions of a wide range of Maxim’s products for health-sensing applications. This third-generation health sensor platform (an advancement of the MAXREFDES101# Health Sensor Platform 2.0) integrates a two-in-one PPG + ECG analog-front-end (AFE) sensor (MAX86176), a human body temperature sensor (MAX30208), a microcontroller (MAX32666), a power-management IC (MAX20360), and a 3-axis accelerometer. The complete platform includes a 3D-printed enclosure and a biometric algorithm hub with an embedded heart-rate, oxygen saturation and ECG algorithms (MAX32674). Algorithm output and raw data can be streamed through Bluetooth™ to a PC GUI for demonstration, evaluation, and customized development.