AFE4500EVM

AFE4500 integrated AFE for bioimpedance analysis and biosensing evaluation module

AFE4500EVM

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Overview

The AFE4500 evaluation module (EVM) is designed to expedite evaluation and system-development activities related to the AFE4500. AFE4500 supports synchronized signal acquisition for photoplethysmogram (PPG), electrocardiogram (ECG), and body impedance analysis (BIA).

The analog-to-digital converter (ADC) output of all three signal chains is stored in a 256-sample, first-in first-out (FIFO) block that can be read out using a serial peripheral interface (SPI) or I2C interface. The chip has separate signal chains for PPG, ECG, and Bio-Z testing that share the same ADC. Separate signal acquisition windows can be defined to acquire the PPG, ECG, and/or Bio-Z signals. The acquisition rate of each signal can be independently set. Simultaneous acquisition of up to 24 PPG signals involving up to 8 LEDs and up to 4 PDs are supported, thereby enabling applications like optical heart-rate monitoring (OHRM) and pulse oximetry.

The analog front end (AFE) supports multiple-signal acquisition modes, including a PPG-only mode and two mixed acquisition modes, each of which allows any combination of signals to be acquired.

Features
  • Acquire data at up to 1000 SPS in evaluation mode
  • USB-based power and PC application connectivity
  • Access to all AFE4500 registers
  • USB-based firmware upgrade option

  • AFE4500 evaluation module
  • Micro-USB cable
  • HRM sensor cable
  • ECG sensor cable
  • Connector board
  • Sensor board
  • Impedance jig closed board
  • Impedance jig open board

Biosensing AFEs
AFE4500 Integrated analog front end (AFE) for bioimpedance analysis and electrical and optical biosensing
Important note

AFE4500EVM user's guide is available. Request now

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Evaluation board

AFE4500EVM – AFE4500 integrated AFE for bioimpedance analysis and biosensing evaluation module

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

Technical documentation

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Type Title Date
* User guide AFE4500 EVM User's Guide Feb. 15, 2021
Certificate AFE4500EVM EU Declaration of Conformity Mar. 31, 2021

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