SBASB19 March   2024 AFE4510

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Device and Documentation Support
    1. 4.1 Abbreviations Used in this data sheet
    2. 4.2 Receiving Notification of Documentation Updates
    3. 4.3 Support Resources
    4. 4.4 Trademarks
    5. 4.5 Electrostatic Discharge Caution
    6. 4.6 Glossary
  6. 5Revision History
  7. 6Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Integrated signal chains for Bio-Z, EDA, ECG, PPG
  • Synchronized ECG, PPG enables PTT-based BP
  • Bio-Z signal acquisition:
    • Multi-frequency Body impedance Analysis with frequency programmable up to 250kHz
    • Low frequency excitation mode for EDA/GSR
    • Complex (I, Q). Tetrapolar impedance measurement
    • Sine-wave excitation with a 7-bit DAC
    • Calibration scheme to compensate for electrode impedance and achieve accurate BioZ
  • ECG signal acquisition:
    • 1-lead ECG signal acquisition up to 4kHz
    • Mode to configure as 2-channel ECG
    • INA gain programmable from 1.27 - 12.23
    • RLD output to set body bias through the third electrode
    • Input noise (0.5-150Hz): 0.5µVrms at gain of 12.23
    • >1GΩ input impedance, CMRR>100dB
    • Integrated 370 Hz anti-aliasing low pass filter
    • AC, DC lead-off detect: 1.6nA to 1µA
  • PPG signal acquisition:
    • Acquisition of 24 PPG signal sets (LED, AMB)
    • Supports PPG sensors at different data rates
    • Peak system SNR of 115 dB in 0.5-10Hz band enables high-accuracy SpO2 measurement
    • Low Current for Continuous Operation with a Typical Value: 19μA for the Receiver
  • PPG Transmitter:
    • 8-Bit Programmable LED Current with a range adjustable from 50mA to 300mA
    • LED Short Detection
    • Support of 16 LEDs in Common Anode configuration for SpO2, OHRM, Spectroscopy
  • PPG Receiver:
    • Supports 5 PDs, 4 parallel receive paths
    • Noise filtering with programmable bandwidth
    • Trans-impedance Gain: 3.7kΩ to 1MΩ
    • 8-bit Ambient Offset Subtraction DAC up to 256µA
    • 9-bit LED Offset Subtraction DAC up to 64µA
    • Digital Ambient Subtraction at ADC Output
  • EDA Signal Acquisition:
    • Low-power continuous EDA and PPG acquisition using the ECG receiver
    • Independent data rates for EDA and PPG acquisition with optimized power cycling
    • High-accuracy EDA signal chain for spot-check EDA using the BIA signal chain
  • Supports external clock and internal oscillator
  • Option to operate 2 AFEs in parallel
  • Option to configure the 5th PD input as a general purpose voltage measurement channel
  • FIFO with 384-sample Depth, SPI™
  • Supplies: RX,:1.7-1.9V, I/O: 1.15-1.9V, TX:3-5.5V