Part Name
EVAL-ADPDUCZ
Description
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93 Pages
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Analog Devices
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EVAL-ADPDUCZ(Rev0) Datasheet - Analog Devices
Analog Devices
GENERAL DESCRIPTION
The ADPD4200 operates as a complete multimodal sensor front end, stimulating up to four light emitting diodes (LEDs) and measuring the return signal on up to four separate current inputs. Twelve time slots are available, enabling 12 separate measurements per sampling period.
FEATURES
► Multimodal analog front end
► 4 input channels with multiple operation modes to accommodate
the following measurements: PPG, ECG, EDA, impedance, and
temperature
► Dual-channel processing with simultaneous sampling
► 12 programmable time slots for synchronized sensor measurements
► Flexible input multiplexing to support differential and
single-ended sensor measurements
► 4 LED drivers, which can be driven simultaneously
► Flexible sampling rate from 0.004 Hz to 9 kHz using internal
oscillators
► On-chip digital filtering
► SNR: 105 dB (100 kΩ TIA gain, 100 Hz ODR, 80 pulses, CPD =
70 pF, 0.5 Hz to 10 Hz bandwidth)
► AC ambient light rejection: 60 dB up to 1 kHz
► 400 mA total LED peak drive current
► Total system power dissipation: 30 µW (combined LED and AFE
power), continuous PPG measurement at 75 dB SNR, 25 Hz
ODR, 100 nA/mA CTR
► SPI communications supported
► 512-byte FIFO size
APPLICATIONS
► Wearable health and fitness monitors: heart rate monitors
(HRMs), heart rate variability (HRV), stress, blood pressure
estimation, SpO2, hydration, and body composition
► Industrial monitoring: CO, CO2, smoke, and aerosol detection
► Home patient monitoring
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