MAX86184
RECOMMENDED FOR NEW DESIGNSSmall Form Factor, Dual-Channel, Optical AFE with Enhanced Power-Saving Features
Small Form Factor PPG AFE
- Part Models
- 2
- 1ku List Price
- price unavailable
Overview
- Dual-Channel, Optical Data Acquisition System
- Up to 10 Fully Configurable Measurements
- Four Photodiode Inputs
- Up to 14 LEDs
- High SNR
- 98dB Nyquist SNR Extendable to 117dB
- Up to 48μA LED-to-PD Crosstalk Removal
- Reduces System Power
- 15μW (16SPS, One Channel, Three MEAS/FR)
- >70dB SNR at IPDm_IN = 1μA (ADM_EN = 1)
- Individualized Sampling Rate per Measurement
- Excellent Ambient Light Cancellation
- 200μA DC Ambient Cancellation
- 80dB at 100Hz Ambient Light Rejection
- Highly Integrated Solution
- 1.81mm × 1.81mm, 25WLP
The MAX86184A is a small form factor yet fully featured optical data acquisition system ideal for various optical applications including photoplethysmography and optical pulse oximetry. It is a low power and high signal-to-noise ratio (SNR) integrated solution designed for the demanding requirements of medical and wearable devices. It is available in a small, 25-bump, 1.81mm × 1.81mm, WLP package, and requires minimal external hardware components that enable the smallest system level solution.
The MAX86184A includes two high-resolution optical-readout signal processing channels that can simultaneously sample any two combinations of its four photodiode inputs. It features robust ambient light cancellation and one high-current LED driver DAC (255mA maximum). The MAX86184A supports up to 14 LEDs.
The MAX86184A implements a range of features to reduce both AFE and system level power such as variable sample rates, sensor synchronization input/output, and deep FIFO.
The MAX86184A is fully configurable through software registers and the digital output data is stored in a 256-word FIFO. The FIFO allows the MAX86184A to be connected to a microcontroller or processor on a shared SPI bus and operate in fully autonomous mode for low-power battery applications. The MAX86184A operates on a switched 1.8V main supply voltage (VDD). Driving the LEDs requires the system to provide an additional 2.5V (ADM_EN = 0) or 3.1V (ADM_EN = 1) to 5.5V power rail (VLED). The voltage levels of the digital input/output pins are referenced to the VDD rail (1.8V typ).
APPLICATIONS
- Wearable Devices for Fitness, Wellness, andMedical Applications
- Battery-Powered Devices
- Space-Constrained Locations Like:
- Smart Rings
- Earbuds, True Wireless, Hearing Aids…
- Watches, Armbands…
- Optimized Performance to Detect:
- Optical Heart Rate
- Heart Rate Variability
- Oxygen Saturation (SpO2)
- Muscle and Tissue Oxygen Saturation (SmO2 and StO2)
- Maximum Oxygen Consumption (VO2 Max)
Documentation
Data Sheet 1
User Guide 1
Request an NDA
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
Request an NDAADI 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 |
|---|---|---|---|
| MAX86184AENA+ | 0.35mmp, 5x5 full array, thin WLP, 30um Scribe | ||
| MAX86184AENA+T | 0.35mmp, 5x5 full array, thin WLP, 30um Scribe |
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