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AFE4405 - Integrated Analog Front-End

General Description

The AFE4405 is an analog front-end (AFE) for optical bio-sensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2).

The device supports three switching light-emitting diodes (LEDs) and up to two photodiodes.

Key Features

  • 1 Transmitter:.
  • Supports Common Anode LED Configuration.
  • Dynamic Range: 100 dB.
  • 8-Bit Programmable LED Current to 50 mA (Extendable to 100 mA).
  • Programmable LED On-Time.
  • Simultaneous Support of 3 LEDs for Optimized SpO2, HRM, or Multi-Wavelength HRM.
  • Receiver:.
  • Supports 2 Time-Multiplexed Photodiode Inputs.
  • 24-Bit Representation of the Current Input from the Photodiode in Twos Complement Format.
  • Individual.

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Full PDF Text Transcription for AFE4405 (Reference)

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Product Folder Order Now Technical Documents Tools & Software Support & Community AFE4405 SBAS768C – APRIL 2016 – REVISED JULY 2019 AFE4405 Ultra-Small, Integrated AFE wi...

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APRIL 2016 – REVISED JULY 2019 AFE4405 Ultra-Small, Integrated AFE with FIFO for Wearable, Optical Heart-Rate Monitoring and Bio-Sensing 1 Features •1 Transmitter: – Supports Common Anode LED Configuration – Dynamic Range: 100 dB – 8-Bit Programmable LED Current to 50 mA (Extendable to 100 mA) – Programmable LED On-Time – Simultaneous Support of 3 LEDs for Optimized SpO2, HRM, or Multi-Wavelength HRM • Receiver: – Supports 2 Time-Multiplexed Photodiode Inputs – 24-Bit Representation of the Current Input from the Photodiode in Twos Complement Format – Individual DC Offset Subtraction DAC (±15.

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