سنسور و مبدل سنسور تخصصی

Product Attributes

Introduction

The MAX86176 is a complete photoplethysmography (PPG) and electrocardiogram (ECG) analog front-end (AFE) solution for wearable applications. The MAX30005 is a complete AFE solution for ECG only. Both AFEs deliver high performance for fitness and clinical applications while offering ultra-low power consumption to extend battery life. The MAX86176 and MAX30005 both feature ECG channels, EMI filtering, internal lead biasing, AC and DC lead-off detection, right-leg drive, ultra-low power DC lead connection detection in standby mode, and extensive calibration voltages for built-in self-test. In addition, the MAX86176 includes a PPG data acquisition system supporting up to 6 LEDs and 4 photodiode inputs, fully synchronized with the ECG signal path. The MAX86176/MAX30005 can operate using either an internal or external clock. The MAX86176/MAX30005 are designed to comply with IEC 60601-2-47 ambulatory ECG monitoring standards and are suitable for challenging dry-electrode applications. The MAX86176/MAX30005 are available in a 6x6 36-bump wafer-level package (WLP) and operate over a -40°C to +85°C temperature range.

Features

• PPG (MAX86176):
  • Complete dual-channel optical data acquisition system
  • Ultra-low power operation for wearable devices
  • Optical readout channel typical current < 11μA at 25fps
  • ADC integration time: 14.6μs to 117.1μs
  • Low shutdown current typical value < 1μA
  • SNR up to 110dB in Avg mode with off-chip filtering
  • Frame rate support: 1fps to 2kfps
  • High-resolution 20-bit charge integration ADC
  • Low dark current noise < 50pA (RMS)
  • Excellent ambient light range and rejection: ambient light photodiode current > 100μA, ambient light rejection > 90dB at 120Hz (Avg > 2)
• ECG (MAX86176/MAX30005):
  • Clinical-grade ECG AFE with high-resolution ADC: 15.6 ENOB, 0.6μV (RMS) noise over 0.05Hz to 40Hz
  • Ultra-low input bias current (−40°C to +85°C)
  • Input current noise: 233fA (RMS) (0.05Hz to 40Hz, TA = +25°C)
  • Fully differential input architecture with CMRR > 110dB at power line frequency
  • High input impedance > 1GΩ for minimal common-mode to differential-mode conversion
  • High DC offset range ±1300mV (typical 1.8V), compatible with various electrode types
  • High AC dynamic range > 90mV (P-P) to prevent saturation during motion
  • ECG biopotential channel applicable to select EEG applications
  • Higher gain range available (480V/V, 960V/V)
  • Low input-referred voltage and current noise, compatible with small dry electrodes
• System:
  • Shutdown current typical value: 0.5μA
  • 256-word FIFO for ECG and PPG
  • True synchronous ECG and PPG data from dedicated signal paths
  • Two fully configurable interrupts
  • High-speed SPI or I²C interface
  • Compact 2.728mm × 2.708mm WLP package

Applications

• Wearable devices for fitness, wellness, and medical applications with clinical-grade accuracy
• Suitable for wrist, finger, ear, and other body locations
• Single-lead event monitors for atrial fibrillation (A-Fib) and other arrhythmia detection
• Single-lead wireless patches for home/in-hospital monitoring
• Chest strap heart rate monitors for fitness applications