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Ultra-Low-Power, Single-Channel Integrated Bioimpedance (BioZ) AFE

Ultra-Low Power, Small Package, Single Channel Integrated Bioimpedance (BioZ) AFE for Fitness and Medical Applications.

Product Details

Key Features

Parametric specs for Bio-Sensors
ISUPPLY (µA) (typ) 150
Shutdown Mode Supply Current (µA) (typ) 0
VSUPPLY (V) (min) 1.1
VSUPPLY (V) (max) 2
Resolution (bits) (ADC) 20
Oper. Temp. (°C) 0 to +70
Package/Pins WLP/30
Budgetary
Price (See Notes)
4.39
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Simplified Block Diagram

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Parameters

Parametric specs for Bio-Sensors
ISUPPLY (µA) (typ) 150
Shutdown Mode Supply Current (µA) (typ) 0
VSUPPLY (V) (min) 1.1
VSUPPLY (V) (max) 2
Resolution (bits) (ADC) 20
Oper. Temp. (°C) 0 to +70
Package/Pins WLP/30
Budgetary
Price (See Notes)
4.39

Key Features

  • BioZ AFE with High Resolution Data Converter
    • 17 Bits ENOB with 1.1µVP-P Noise for BioZ
  • High AC Dynamic Range of 90mVP-P Will Help Prevent Saturation in the Presence of Motion/Direct Electrode Hits
  • Longer Battery Life Compared to Competing Solutions
    • 158µW at 1.1V Supply Voltage
  • Leads-On Interrupt Feature Allows to Keep µC in Deep Sleep Mode Until Valid Lead Condition is Detected
    • Lead-On Detect Current: 0.63µA (typ)
  • High Accuracy Allows for More Physiological Data Extractions
  • 8-Word FIFO Allows the MCU to Stay Powered Down for 256ms with Full Data Acquisition
  • High-Speed SPI Interface
  • Shutdown Current of 0.58µA (typ)

Applications/Uses

  • Impedance Based Heart Rate Detection
  • Respiration and Hydration Monitors
  • Single-Lead Wireless Patches for In-Patient/Out-Patient Monitoring

Description

The MAX30002 is a complete 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 MAX30002 is a single bioimpedance channel capable of measuring respiration.

The bioimpedance channel has ESD protection, EMI filtering, internal lead biasing, DC leads-off detection, ultra-low-power leads-on detection during standby mode, and a programmable resistive load for built-in self-test. Soft power-up sequencing ensures no large transients are injected into the electrodes. The channel also has 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 bioimpedance channel includes integrated programmable current drive, works with common electrodes, and has the flexibility for 2 or 4 electrode measurements. It also has AC lead off detection.

The MAX30002 is available in a 28-pin TQFN and 30-bump wafer-level package (WLP), operating over the 0°C to +70°C commercial temperature range.

Simplified Block Diagram

MAX30002: Typical Application Circuit MAX30002: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .