Analog Devices Inc./Maxim Integrated MAX30102EFD+T

Overview

MAX30102EFD+T from Maxim Integrated is a fully integrated, optical pulse oximetry and heart-rate sensor module featuring dual-wavelength (660nm red / 880nm IR) LEDs, photodiode, ambient light cancellation circuitry, 18-bit sigma-delta ADC, and on-chip temperature sensor - all in a single 5.6mm × 3.3mm × 1.55mm 14-pin OESIP package. It delivers clinical-grade SpO₂ and HR measurements for wearable health monitors with ultra-low power consumption (1.2mA typical in SpO₂/HR mode, 0.7µA shutdown).

For engineers reviewing the MAX30102EFD+T datasheet, MAX30102EFD+T pinout, MAX30102EFD+T application, or MAX30102EFD+T equivalent, this page provides verified technical context, I²C register-mapped functionality, motion-resilient optical architecture, FIFO-based data streaming, and real-world design constraints including dual-supply operation (1.8V analog + 3.3V LED), ambient light rejection up to 200µA, and -40°C to +85°C industrial temperature range.

Technical Context

The MAX30102EFD+T implements a continuous-time sigma-delta ADC with 18-bit resolution and 10.24MHz clock, programmable sample rates from 50sps to 3200sps, and configurable LED pulse widths (69–411µs) to optimize signal-to-noise ratio and power trade-offs. Its ambient light cancellation uses a dedicated track-and-hold circuit capable of rejecting up to 200µA of ambient photocurrent.

Internally, it integrates two independent LED drivers (0–50mA programmable per channel), a 32-deep FIFO with left-justified 3-byte-per-channel data structure, and hardware interrupt logic (PPG_RDY, ALC_OVF, DIE_TEMP_RDY) tied to registers 0x00–0x03. The die temperature sensor provides 0.0625°C inherent resolution and supports SpO₂ algorithm calibration across temperature.

Key Specifications

Pinout & Package

MAX30102EFD+T is housed in a 14-pin Optical Enhanced Small Outline Package (OESIP), measuring 5.6mm × 3.3mm × 1.55mm with integrated cover glass. The package features exposed thermal pad (PGND-connected) and optimized optical cavity alignment for consistent skin coupling in wrist-worn form factors.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar optical pulse oximetry and heart-rate sensor applications.

Compared with MAX30101EFD+T, the MAX30102EFD+T adds IR LED, SpO₂-specific ambient cancellation, and dual-channel FIFO support - essential for regulatory-compliant saturation measurement. Versus AFE4404IRGZT, it trades design flexibility for turnkey integration, reducing time-to-market by eliminating LED driver tuning and optical alignment validation.

Availability

MAX30102EFD+T is available at Aetrix Electronics and suitable for wearable health monitors, fitness assistant devices, and remote patient monitoring systems requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.

Supply support for MAX30102EFD+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and high-reliability ICs for industrial, healthcare, and communications markets.

The MAX30102EFD+T belongs to Maxim's optical biosensor product line, designed specifically for compact, battery-powered wearable health devices requiring clinical-grade PPG signal fidelity and ultra-low power operation.

FAQ

What is the absolute maximum VLED+ voltage rating for MAX30102EFD+T?

The MAX30102EFD+T specifies an absolute maximum VLED+ to PGND rating of +6.0V. Operation above 5.0V is not recommended, as LED forward voltage is typically 1.4V (IR) and 2.1V (red) at 20mA, and exceeding 5.0V risks overdriving the internal LED drivers or violating thermal limits. Sustained operation at 6.0V may cause permanent damage.

Does MAX30102EFD+T support direct connection to a 3.3V microcontroller I²C bus?

Yes, MAX30102EFD+T supports direct connection to a 3.3V microcontroller I²C bus - but only if the microcontroller's I²C pins are 1.8V-tolerant or configured for open-drain with external pull-ups to VDD (1.8V). The MAX30102EFD+T's SDA and SCL inputs accept VIH ≥ 0.7×VDD (≥1.26V) and VIL ≤ 0.3×VDD (≤0.54V); connecting pull-ups to 3.3V violates this and risks latch-up or excessive leakage.

How does the MAX30102EFD+T handle motion artifacts during heart-rate measurement?

The MAX30102EFD+T combats motion artifacts through three integrated mechanisms: (1) high-SNR photodiode and 18-bit ADC to preserve signal fidelity, (2) proprietary discrete-time digital filter in the SpO₂ subsystem that suppresses low-frequency motion noise, and (3) ratiometric red/IR signal processing that cancels common-mode interference. These features enable reliable HR detection even during moderate arm movement.

Can the FIFO in MAX30102EFD+T store only red-channel data, or is dual-channel storage mandatory?

The MAX30102EFD+T FIFO stores data based on active LED configuration: in HR-only mode (single LED), it stores 3 bytes per sample; in SpO₂ mode (dual LED), it stores 6 bytes per sample (3 for red, 3 for IR). The FIFO depth remains fixed at 32 entries, so usable sample count depends on channel count - e.g., 32 samples in HR mode vs. 16 full red+IR pairs in SpO₂ mode.

Is the cover glass on MAX30102EFD+T hydrolytically resistant, and what standard certifies it?

Yes, the integrated cover glass on MAX30102EFD+T meets Hydrolytic Resistance Class HGB 1 per DIN ISO 719, indicating excellent resistance to moisture-induced degradation under humid/wet conditions - critical for long-term reliability in skin-contact wearable applications where sweat exposure is routine.