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DATA SHEET
AFE4960 Two-Channel ECG, Respiration and Pace Pulse Detection Analog Front End (AFE) for Clinical Wearables
1 Features
- Supports ECG and respiration impedance
measurement; configurable as 2-channel ECG or 1-channel ECG + 1-channel
Respiration
- Can be used in IEC 60601-2-47:2012/(R)2016 and IEC
60601-2-27:2011(R)2016 compliant systems
- 222 μA/channel while operating as 2-channel ECG
- Integrated Pace pulse detection on 1 channel
- Supports a 3-lead ECG, extendable to 5 leads or higher by
operating two or more AFEs in parallel
- ECG signal chain:
- Single channel ECG
acquisition up to 2.048 kHz
- 2 channel ECG
acquisition up to 1.36 kHz/channel
- RLD output to set body
bias through third electrode
- Programmable INA gain
from 2~12
- >1 GΩ input
impedance, CMRR > 100 dB
- Input noise (0.5-150
Hz): 13 µVpp at INA gain of 3; 5 μVpp at INA gain of 12
- Integrated 370 Hz
anti-aliasing low pass filter
- Mode for Continuous lead
on/off detection
- Mode for Lead impedance measurement
- Bio-Z signal chain:
- Measurement of
Bio-impedance over excitation frequency from 30 kHz to 100 kHz
- Sine wave or square wave
excitation
- Respiration impedance
measurement: 45 mΩ-pp noise on a baseline impedance of 2 kΩ
- Dual channel ECG channel:
- Bio-Z receiver
configurable as a 2nd ECG channel
- External clock and internal
oscillator modes
- FIFO with 128-sample Depth,
24-bit word
- SPITM, I2C
interfaces: Selectable by pin
- 2.6-mm × 2.6-mm DSBGA, 0.4-mm
Pitch
- Supplies: Rx:1.7-1.9 V,
IO:1.7-1.9 V