EVAL-ADPD4101-ARDZ

EVAL-ADPD4101-ARDZ FEATURES

Multimodal analog front end8 input channels with multiple operation modes for varioussensor measurementsDual-channel processing with simultaneous sampling12 programmable time slots for synchronized sensormeasurementsFlexible input multiplexing to support differential andsingle-ended sensor measurements8 LED drivers, 4 of which can be driven simultaneouslyFlexible sampling rate from 0.004 Hz to 9 kHz using internaloscillatorsOn-chip digital filteringSNR of transmit and receive signal chain: 100 dBAC ambient light rejection: 60 dB up to 1 kHz400 mA total LED peak drive currentTotal system power dissipation: 30 µW (combined LED andAFE power), continuous PPG measurement at 75 dB SNR,25 Hz ODR, 100 nA/mA CTRSPI and I2C communications supported512-byte FIFO size

EVAL-ADPD4101-ARDZ GENERAL DESCRIPTION

The ADPD4100/ADPD4101 operate as a complete multimodalsensor front end, stimulating up to eight light emitting diodes(LEDs) and measuring the return signal on up to eight separatecurrent inputs. Twelve time slots are available, enabling 12 separatemeasurements per sampling period.The data output and functional configuration utilize an I2Cinterface on the ADPD4101 or a serial port interface (SPI) onthe ADPD4100. The control circuitry includes flexible LEDsignaling and synchronous detection. The devices use a 1.8 Vanalog core and 1.8 V/3.3 V compatible digital input/output (I/O).The analog front end (AFE) rejects signal offsets and corruptionfrom asynchronous modulated interference, typically fromambient light, eliminating the need for optical filters or externallycontrolled dc cancellation circuitry. Multiple operating modesare provided, enabling the ADPD4100/ADPD4101 to be a sensorhub for synchronous measurements of photodiodes, biopotentialelectrodes, resistance, capacitance, and temperature sensors. Themultiple operation modes accommodate various sensor measure-ments, including, but not limited to, photoplethysmography(PPG), electrocardiography (ECG), electrodermal activity(EDA), impedance, capacitance, temperature, gas detection,smoke detection, and aerosol detection for various healthcare,industrial, and consumer applications.The ADPD4100/ADPD4101 are available in a 3.11 mm ×2.14 mm, 0.4 mm pitch, 33-ball WLCSP and 35-ball WLCSP.

EVAL-ADPD4101-ARDZ APPLICATIONS

Wearable health and fitness monitors: heart rate monitors(HRMs), heart rate variability (HRV), stress, blood pressureestimation, SpO2, hydration, body compositionIndustrial monitoring: CO, CO2, smoke, and aerosol detectionHome patient monitoring