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AFE4300 Low-Cost, 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.
...