AFE4490 Datasheet PDF – Integrated Analog Front-End

Part Number: AFE4490

Function: Integrated Analog Front-End for Pulse Oximeters

Package: VQFN-40 (6 mm × 6 mm)

Manufacturer: Texas Instruments


AFE4490 datasheet



The AFE4490 is a fully-integrated analog front-end (AFE) that is ideally suited for pulse-oximeter applications. The device consists of a low-noise receiver channel with a 22-bit analog-to-digital converter (ADC), an LED transmit section, and diagnostics for sensor and LED fault detection.

The device is a very configurable timing controller. This flexibility enables the user to have complete control of the device timing characteristics. To ease clocking requirements and provide a low-jitter clock to the device, an oscillator is also integrated that functions from an external crystal.

The device communicates to an external microcontroller or host processor using an SPI interface.



1. Fully-Integrated Analog Front-End for Pulse Oximeter

2. Receive Channel with High Dynamic Range

3. Integrated Fault Diagnostics


1. Medical Pulse Oximeter

2. Industrial Photometry

Other data sheets are available within the file:



AFE4490 Datasheet PDF Download

AFE4490 pdf