SBASB19
March 2024
AFE4510
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Device and Documentation Support
4.1
Abbreviations Used in this data sheet
4.2
Receiving Notification of Documentation Updates
4.3
Support Resources
4.4
Trademarks
4.5
Electrostatic Discharge Caution
4.6
Glossary
5
Revision History
6
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
YBG|42
MXBG429
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbasb19_oa
sbasb19_pm
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 SpO
2
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