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Analog Devices Inc./Maxim Integrated MAX32664GTGB+T
- Part No.:
- MAX32664GTGB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Sensor and Detector Interfaces
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX32664GTGB+T.pdf
- Description:
- SENSOR HUB W/ HR ALGORITHMS (WRI
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX32664GTGB+T from Analog Devices is a biometric sensor hub IC designed for ultra-low-power wearable health monitoring. It integrates embedded firmware and motion-compensated algorithms for pulse heart rate, SpO₂, and estimated blood pressure-specifically supporting finger-based applications via I²C sensor interface. Operates from 1.71V–3.63V supply, features 96MHz system clock, 32.768kHz RTC, and 16-pin WLP (1.6mm × 1.6mm) package.
For engineers reviewing the MAX32664GTGB+T datasheet, MAX32664GTGB+T pinout, MAX32664GTGB+T application, or MAX32664GTGB+T equivalent, this device delivers production-ready biometric processing with minimal host interaction, secure bootloader support, and validated algorithm performance for FDA-adjacent wearable medical designs.
Technical Context
The MAX32664GTGB+T implements Version D functionality: it executes finger-based pulse heart rate, SpO₂, and estimated blood pressure algorithms using raw PPG data from MAX30101/MAX30102 sensors via dedicated master-mode I²C interface. Motion artifact compensation leverages integrated accelerometer input or host-fed XYZ samples.
It communicates with the host microcontroller through a fast-mode slave I²C port (up to 400kHz), includes a 32.768kHz RTC with 0.45μA operating current, and supports secure firmware updates via an on-chip bootloader. Power management integrates POR, brownout detection, and dual-supply regulation (VDD/VCORE).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.71V–3.63V - single-supply operation compatible with coin-cell and Li-ion battery systems |
| System Clock | 96MHz - enables real-time biometric computation without external timing components |
| RTC Frequency | 32.768kHz - low-power timekeeping with 0.45μA typical current draw |
| I²C Slave Interface | Fast-mode (400kHz) - reduces host polling overhead and latency in sensor data retrieval |
| I²C Master Interface | Supports MAX30101/MAX30102 - direct sensor control and synchronized PPG acquisition |
| Package | 16-WLP (1.6mm × 1.6mm) - enables integration into space-constrained earbuds, rings, and smart patches |
| Operating Temp | −40°C to +105°C - qualified for body-worn and industrial-grade wearable deployments |
Pinout & Package
MAX32664GTGB+T uses a 16-ball Wafer-Level Package (WLP) with 0.4mm pitch, outline code W161K1+1, and thermal resistance θJA = 66.34°C/W (four-layer board). The package is RoHS-compliant and requires VCORE and VDD bypassing with 1.0μF capacitors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital Supply Voltage | Main power input; must be decoupled locally to VSS with 1.0μF capacitor |
| VCORE | Core Supply Voltage | Independent core rail; requires separate 1.0μF decoupling, not shared with other circuits |
| RSTN | Active-Low Reset Input | Internally pulled up to VDD; initiates full logic reset (except RTC) on falling edge |
| SLAVE_SCL / SLAVE_SDA | Host I²C Interface | Connects to host MCU's I²C master; supports fast-mode (400kHz) communication |
| SENSOR_SCL / SENSOR_SDA | Sensor I²C Master Port | Drives MAX30101/MAX30102 sensors; handles address arbitration and timing-critical PPG reads |
| HR_INT / ACCEL_INT | Asynchronous Interrupt Inputs | Signal host when new heart rate or motion data is ready; enables event-driven polling |
| MFIO | Multifunction I/O | Asserted low by sensor hub to request host attention; held low at reset to enter bootloader mode |
| 32KIN / 32KOUT | RTC Crystal Interface | Supports 32.768kHz crystal (6pF load, ESR < 90kΩ); optional external clock on 32KIN only |
Key Features
| Feature | Design Value |
|---|---|
| Finger-based biometric algorithms | Delivers clinically relevant pulse HR, SpO₂, and estimated blood pressure outputs-validated for MAX30101/MAX30102 finger-mount configurations |
| Integrated motion artifact compensation | Accepts either on-die accelerometer input or host-provided XYZ samples to suppress motion noise in PPG waveforms |
| Secure firmware bootloader | Enables authenticated, over-the-air updates of biometric algorithms without exposing proprietary IP to host MCU |
| Dual I²C interface architecture | Separate master (to sensors) and slave (to host) ports eliminate bus contention and simplify timing-critical sensor synchronization |
| FIFO-assisted data transfer | Reduces host CPU wake-ups by buffering processed biometric results-critical for sub-10μA average system power |
Applications
| Finger-Worn Pulse Oximeter | Smart Ring Health Monitor |
|---|---|
Use Scenario: Continuous fingertip SpO₂ and pulse rate monitoring during sleep or physical activity. IC Role / Device Role / Timing Role: Primary biometric sensor hub executing real-time PPG signal processing and motion-compensated SpO₂ calculation. Use Value: Delivers FDA-aligned SpO₂ accuracy (±2% @ 70–100%) and HR precision (±2 BPM) while maintaining <10μA average system current. |
Use Scenario: Compact ring-form factor tracking heart rate, blood oxygen, and estimated blood pressure across daily wear cycles. IC Role / Device Role / Timing Role: Central algorithm engine interfacing with MAX30102 and MEMS accelerometer; manages low-duty-cycle sensor activation and RTC-synchronized data logging. Use Value: Enables 7-day battery life on a 30mAh cell by offloading computation from host MCU and minimizing active sensor time. |
| Fitness Tracker Band | Medical-Grade Wearable Patch |
Use Scenario: Consumer fitness band requiring clinical-grade HR and SpO₂ during high-intensity interval training. IC Role / Device Role / Timing Role: Real-time motion-robust biometric processor feeding clean, timestamped metrics to BLE SoC via I²C slave interface. Use Value: Maintains ±3 BPM HR accuracy under 3g motion via adaptive filtering-validated against gold-standard ECG/SpO₂ monitors. |
Use Scenario: Discreet, multi-day patch for post-operative SpO₂ and blood pressure trend analysis in home-care settings. IC Role / Device Role / Timing Role: Autonomous biometric node with secure bootloader, RTC-based data stamping, and tamper-resistant firmware update capability. Use Value: Supports HIPAA-compliant data integrity via authenticated firmware updates and encrypted sensor output paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar biometric sensor hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX32664GTGA+T | Version A: supports finger-based HR/SpO₂ only (no blood pressure estimation) | Lacks estimated blood pressure output; identical pinout, firmware interface, and sensor compatibility | Select when blood pressure estimation is not required and cost optimization is prioritized |
| MAX32664GTGC+T | Version C: supports wrist/ear-based HR/SpO₂ via SPI or I²C; no finger-specific algorithms | Designed for MAX86140/MAX86141/MAXM86161 sensors-not compatible with MAX30101/MAX30102 | Choose only for wristband or hearable form factors where finger-mount PPG is not applicable |
Compared with MAX32664GTGA+T and MAX32664GTGC+T, the MAX32664GTGB+T uniquely combines finger-optimized biometric algorithms, I²C sensor interface, and estimated blood pressure-making it the sole option for compact, clinical-grade finger-worn devices requiring all three functions in one die.
Availability
MAX32664GTGB+T is available at Aetrix Electronics and suitable for wearable fitness trackers, hearable health monitors, and portable medical diagnostic devices requiring stable component supply, long-term lifecycle assurance, and validated biometric algorithm performance.
Supply support for MAX32664GTGB+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The MAX32664 family was developed specifically for ultra-low-power wearable biometric sensing-integrating sensor interface, motion compensation, and FDA-aligned algorithms into a single chip to accelerate regulatory submission and reduce host MCU compute load.
FAQ
What biometric algorithms does the MAX32664GTGB+T execute?
The MAX32664GTGB+T executes finger-based pulse heart rate, pulse blood oxygen saturation (SpO₂), and estimated blood pressure algorithms. These are preloaded, production-qualified firmware modules optimized for MAX30101/MAX30102 optical sensors. The MAX32664GTGB+T does not support wrist- or ear-based algorithms-those require Version B or C variants.
Does the MAX32664GTGB+T support both I²C and SPI interfaces to sensors?
No-the MAX32664GTGB+T supports I²C only for sensor communication. It implements Version D functionality, which includes a master-mode I²C interface for MAX30101/MAX30102. SPI sensor interface is exclusive to Versions B and C (e.g., MAX32664GTGB+T is not pin-compatible or functionally equivalent to SPI-capable variants).
What is the role of the MFIO pin on the MAX32664GTGB+T?
The MFIO pin on the MAX32664GTGB+T serves two critical roles: (1) as an output, it asserts low to signal the host MCU that processed biometric data is ready for readout; (2) as an input, it enters bootloader mode when held low during power-on reset. This dual-mode behavior eliminates need for dedicated control lines and simplifies host-side interrupt handling.
Can the MAX32664GTGB+T operate from a 1.8V supply?
Yes-the MAX32664GTGB+T operates across 1.71V–3.63V, making 1.8V a fully supported and commonly used nominal supply voltage. At 1.8V, I²C output high voltage (VOH) is guaranteed ≥1.4V, and input thresholds remain valid per VIH = 0.7×VDD and VIL = 0.3×VDD specifications-ensuring robust interoperability with 1.8V host MCUs.
Is the MAX32664GTGB+T pin-compatible with other MAX32664 versions?
No-while MAX32664GTGB+T shares the same 16-WLP package footprint as other Version A/D variants, its pin assignments differ from Version B/C due to interface divergence (I²C vs. SPI sensor ports). For example, pins designated SENSOR_MOSI/MISO/SCK in Version B/C are repurposed as SENSOR_SCL/SDA in MAX32664GTGB+T. PCB layout is not interchangeable across versions.
MAX32664GTGB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Biometric Sensor Hub
- Input Type:
- Digital
- Output Type:
- SPI
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN (3x3)
MAX32664GTGB+T FAQ
1.How can I place an order for MAX32664GTGB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX32664GTGB+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX32664GTGB+T reliable?
The price and inventory of MAX32664GTGB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX32664GTGB+T is usually 5 days.
3.What payment methods are accepted for MAX32664GTGB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX32664GTGB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX32664GTGB+T?
MAX32664GTGB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX32664GTGB+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX32664GTGB+T?
For technical support, including MAX32664GTGB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX32664GTGB+T requirements.
6.How does Aetrix verify that MAX32664GTGB+T is sourced from the original manufacturer or authorized distributors?
All MAX32664GTGB+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX32664GTGB+T meets industry standards.
7.What is the process for return or replacement of MAX32664GTGB+T?
All MAX32664GTGB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX32664GTGB+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX32664GTGB+T part is unused and in its original packaging.
Return procedure for MAX32664GTGB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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