AFE4420EVM

AFE4420 integrated AFE with FIFO for wearable optical heart-rate monitoring evaluation module

AFE4420EVM

Order now

Overview

The AFE4420 evaluation module (EVM) is a platform for evaluating the AFE4420 device, which is an analog front end (AFE) for optical biosensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2). AFE4420 supports four switching light-emitting diodes (LEDs) and four photodiodes. The current from the photodiode is converted into voltage by the transimpedance amplifier (TIA) and digitized using an analog-to-digital converter (ADC). ADC code can be stored in a 128-sample FIFO with programmable depth. The FIFO depth can be partitioned to accommodate the phases that need to be stored. The FIFO can be read out using either an I2C interface or serial peripheral interface (SPI).

AFE4420 also has a fully-integrated LED driver with an 8-bit current control. The device can be clocked by an external clock or internal oscillator. The device communicates to an external host processor using an I2C interface.

The purpose of the AFE4420EVM is to expedite evaluation and system development activities related to the AFE4420 device.

  • Acquire data at up to 1000 SPS in evaluation mode
  • USB-based power and PC application connectivity
  • Access to all AFE4420 registers
  • USB-based firmware upgrade option

  • AFE4420 evaluation module (EVM)
  • AFE4420 sensor board
  • 10-pin sensor cable (1)
  • Micro USB cable (1)

Biosensing AFEs
AFE4420 Ultra-small integrated AFE with FIFO for multisensor wearable optical heart-rate monitoring
Download
Important note

AFE4420EVM User's Guide is available. Request now

Get started


  1. Request access to the AFE4420EVM secure folder

  2. Order the AFE4420EVM

  3. Download the AFE4420 GUI

  4. Download the AFE4420EVM User's Guide

Order & start development

Evaluation board

AFE4420EVM – AFE4420 integrated AFE with FIFO for wearable optical heart-rate monitoring evaluation module

TI's Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
More literature AFE4420EVM EU Declaration of Conformity (DoC) Jan. 02, 2019

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​

Videos