AFE4300 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 position measurement (BCM) analysis. A 16-bit, 860-SPS analog-to-digital converter (ADC) is multiplexed between both chains.
AFE4300 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 position front-end
- Supports up to three tetra-polar plex impedance measurements
- 6-Bit, 1-MSPS sine-wave generation digital-toanalog converter (DAC)
- 247.5-µArms, ±20% Excitation source