MAX30009
Low-Power, High-Performance Bioimpedance Analog Front-End
Bioimpedance (BIOZ) Analog Front-End Solution to Measure a Range of Physiological Conditions in Wearable Applications.
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Key Features
Applications/Uses
| Integrated LEDs | none |
| ISUPPLY (µA) (typ) | not applicable |
| Shutdown Mode Supply Current (µA) (typ) | 0.6 |
| VSUPPLY (V) (min) | 1.1 |
| VSUPPLY (V) (max) | 3.6 |
| Resolution (bits) (ADC) | 20 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | THIN WLP/25 |
| Budgetary Price (See Notes) | 5.26 |
Simplified Block Diagram
Technical Docs
| Data Sheet | Low-Power, High-Performance Bioimpedance Analog Front-End | Feb 22, 2022 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
| Integrated LEDs | none |
| ISUPPLY (µA) (typ) | not applicable |
| Shutdown Mode Supply Current (µA) (typ) | 0.6 |
| VSUPPLY (V) (min) | 1.1 |
| VSUPPLY (V) (max) | 3.6 |
| Resolution (bits) (ADC) | 20 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | THIN WLP/25 |
| Budgetary Price (See Notes) | 5.26 |
Key Features
- BIOZ
- Complete High-Performance BioZ AFE
- Simultaneous I and Q Measurement Capability
- Four-Electrode (Tetrapolar) and Two-Electrode (Bipolar) Configurations
- Ultra-Low Power Operation
- 250 µW at 1.8V AVDD
- High-Resolution, 20-Bit Sigma Delta Analog-to-Digital Converters (ADCs)
- Wide Range of Sample Rates from 16sps to 4ksps
- Flexible and Programmable Input/Output MUX
- Low-Noise, High-Resolution Receive Channel
- 17 Bits Effective Resolution with 1.1ΩVP-P Noise
- High Input Impedance > 1GΩ for Extremely Low Common to Differential-Mode Conversion
- Programmable Sine-Wave Stimulus
- Low Frequency, Low Current Options for Galvanic Skin Response (GSR)/Electrodermal Activity (EDA) Starting from 16Hz and 16nARMS
- Wide Range of Bioelectrical Impedance Analysis/Spectroscopy (BIA/BIS) Frequencies from 1kHz to 806kHz
- High Currents at High Frequencies for Impedance Cardiography (ICG) Applications (e.g.,1.28mARMS at 100kHz) with Lockout for Lower Frequencies for Conformance with 60601-1
- High Input AC Dynamic Range of >1000mVP-P
- 4-Pin In-Situ Calibration Port (4-Wire Precision Resistor) Enables High-Quality Absolute Impedance Measurements
- DC Leads-Off Detect Capability
- Ultra-Low Power Lead-On Detection with Interrupt for System Wake-Up
- Lead-On Detect Current: 0.7µA (typ)
- SYSTEM
- Shutdown Current of 0.6µA (Typ)
- 256 Word FIFO
- Flexible PLL-Based Timing Subsystem with Internal or External Clock Source
- PLL can be Synchronized with Adjacent Biosensor AFEs (such as the MAX86176 Photoplethsymography (PPG)/Electrocardiography (ECG) AFE)
- Configurable Interrupts Reduce µC Wake-Up Time and Save Power
- High-Speed Serial Peripheral Interface (SPI) and I2C Digital Interface
Applications/Uses
- Wearable Fitness, Wellness, and Medical Devices
- Multifrequency Body Composition Analyzers
- Non-Invasive Hemodynamic Monitors
- Automatic External Defibrillators
- Optimized Performance to Accurately Detect:
- Respiration Rate
- Galvanic Skin Response/Electrodermal Activity
- Bioimpedance Spectroscopy
- Body Composition and Fluid Analysis
- Impedance Cardiography and Plethysmography
Description
The MAX30009 is a complete Bioimpedance (BioZ) Analog Front-End (AFE) solution for wearable applications. It offers high performance for fitness, wellness, and clinical applications, and ultra-low power for long battery life. The BioZ receive channel has Electrostatic Discharge (ESD) protection, Electromagnetic Interference (EMI) filtering, internal lead-biasing, DC leads-off detection, DRVN lead-off detection, and ultra-low power lead-on detection during standby mode. The BioZ receive channel also has high input impedance, low noise, high Common-Mode Rejection Ratio (CMRR), programmable gain, various low-pass and high-pass filter options, and two high resolution analog-to-digital converters for simultaneous I and Q acquisition.
The BioZ transmit channel has a sine-wave current generator to drive AC currents into the body with a wide frequency range of 16Hz to 806kHz and a wide magnitude range of 16nARMS to 1.28mARMS. The transmit channel can also operate in the sine-wave voltage and H-bridge modes. The flexible input/output MUX allows for both bipolar and tetrapolar measurements with multiple sets of electrodes.
For measurements requiring high absolute impedance accuracy such as Bioimpedance Analysis/Spectroscopy (BIA/BIS) and Automated External Defibrillator (AED) body impedance, the MAX30009 offers several calibration options. An external precision resistor can be connected to the four-wire calibration port for the highest accuracy. Internal trimmed resistors also provide high accuracy.
The PLL-based timing subsystem allows for a wide range of fine-tuned stimulus and sampling frequencies, and can be synchronized with other Analog Devices biosensors for simultaneous data collection.
The MAX30009 is available in a 2.03mm x 2.03mm, 25-bump Wafer-Level Package (WLP), operating over the -40°C to +85°C temperature range.
Technical Docs
| Data Sheet | Low-Power, High-Performance Bioimpedance Analog Front-End | Feb 22, 2022 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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