AFE4460EVM

AFE4460 evaluation module for high-SNR, ultra-low-power, integrated analog front end (AFE)

AFE4460EVM

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Overview

The AFE4460 evaluation module (EVM) is a platform for evaluating the AFE4460, which is an analog front end (AFE), for optical biosensing applications, such as heart-rate monitoring and peripheral capillary oxygen saturation (SpO2).

AFE4460 supports up to 32 switching light-emitting diodes (LEDs) and up to four photodiodes (PDs). The AFE has two LED drivers each with 8-bit current control. The device has high-dynamic-range transmit-and-receive circuitry that helps with the sensing of very-small signal levels. Up to 16 signal-phase sets can be defined, each phase set comprising a combination of LED and ambient phases. Low-noise offset digital-to-analog converters (DACs) at the receiver inputs can be automatically controlled to cancel DC from ambient and LED light. The current from each of the four PDs in each phase is converted into voltage by transimpedance amplifiers (TIAs), filtered and then digitized using a common analog-to-digital converter (ADC). The ADC code can be stored in a 256-sample first-in first-out (FIFO) block. The FIFO can be read out using a serial peripheral interface (SPI) or inter-integrated circuit (I2C) interface.

Features
  • Acquire data at up to 1000 SPS in evaluation mode
  • USB-based power and PC application connectivity
  • Access to all AFE4460 registers
  • USB-based firmware upgrade option

  • AFE4460 evaluation module
  • Micro-USB cable
  • Heart rate monitor (HRM) sensor cable
  • Sensor board

Biosensing AFEs
AFE4460 High-SNR, ultra-low-power, integrated AFE for wearable optical biosensing with FIFO
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Important note

AFE4460EVM user's guide is available. Request now

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Evaluation board

AFE4460EVM — AFE4460 evaluation module for high-SNR, ultra-low-power, integrated analog front end (AFE)

Driver or library

AFE4462-DESIGN — AFE4462 design resources

Supported products & hardware
TI's Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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Type Title Date
Certificate AFE4460EVM EU RoHS Declaration of Conformity (DoC) 27 Jun 2022

Support & training

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