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AFE4300 - Integrated Analog Front-End

General Description

The AFE4300 is a low-cost analog front-end incorporating two separate signal chains: one chain for weight-scale (WS) measurement and the other for body composition measurement (BCM) analysis.

A 16-bit, 860-SPS analog-to-digital converter (ADC) is multiplexed between both chains.

Key Features

  • 1 Weight-scale front-end:.
  • Supports up to four load cell inputs.
  • On-chip load cell 1.7-V excitation voltage for ratiometric measurement.
  • 68-nVrms Input-Referred noise (0.1 Hz to 2 Hz).
  • Best-fit linearity: 0.01% of full-scale.
  • Weight-scale measurement : 540 µA.
  • Body composition front-end:.
  • Supports up to three tetra-polar complex impedance measurements.
  • 6-Bit, 1-MSPS sine-wave generation digital-toanalog converter (D.

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Full PDF Text Transcription for AFE4300 (Reference)

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Product Folder Order Now Technical Documents Tools & Software Support & Community AFE4300 Low-Cost, Integrated Analog Front-End for Weight-Scale and Body Composition Meas...

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Integrated Analog Front-End for Weight-Scale and Body Composition Measurement AFE4300 SBAS506 – AUGUST 2019 1 Features •1 Weight-scale front-end: – Supports up to four load cell inputs – On-chip load cell 1.7-V excitation voltage for ratiometric measurement – 68-nVrms Input-Referred noise (0.1 Hz to 2 Hz) – Best-fit linearity: 0.01% of full-scale – Weight-scale measurement : 540 µA • Body composition front-end: – Supports up to three tetra-polar complex impedance measurements – 6-Bit, 1-MSPS sine-wave generation digital-toanalog converter (DAC) – 247.5-µArms, ±20% Excitation source – 0.

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