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2022-09-24 17:43:29
AFE4403YZPR Pulse Oximeter and Heart Rate Monitor Integrated Dual LED Driver
feature
Fully integrated AFE for pulse oximetry and heart rate monitoring applications:
send:
Integrated dual LED drivers
(H bridge or common anode)
Optional third LED supports optimized SPO2, HRM or multi-wavelength HRM
Up to 110dB dynamic range
LED current:
Programmable to 100 mA with 8-Bit Current Resolution
30 μA + average LED current
Programmable LED On Time
Independent LED2 and LED1 Current References
Receive channel with high dynamic range:
Output in 22's complement format
Up to 105dB dynamic range
Low power consumption: <650 μA
Dynamic Power-Down Mode Reduces Current to 300 μA
To accommodate a wide range of signal amplitudes:
Programmable Overall Gain: 10kΩ to 4MΩ
Integrated digital environment estimation and subtraction
Flexible timing via external clock or crystal:
Pulse frequency: 62.5 SPS to 2000 SPS
Flexible pulse sequencing and timing control
Input Clock Range: 4 MHz (min) to 60 MHz (max)
Integrated Troubleshooting:
Photodiode and LED open circuit and
Short circuit detection
Consumables:
Rx = 2.0 V to 3.6 V
Tx = 3.0 V to 5.25 V
Packaging: Compact DSBGA-36
(3.07mm x 3.07mm x 0.5mm)
Specified temperature range: –20°C to 70°C
