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All Products > Semiconductors > Data Converter ICs > Analog Front End - AFE

Texas Instruments AFE4300 Analog Front End

Texas Instruments AFE4300 Analog Front End incorporates two separate signal chains: one chain for weight-scale measurement and the other for body composition measurement analysis. A 16-bit, 860-SPS analog-to-digital converter is multiplexed between both chains. The weight measurement chain of the TI AFE includes an instrumentation amplifier with the gain set by an external resistor, followed by a 6-bit digital-to-analog converter for offset correction, and a circuit to drive the external bridge/load cell with a fixed 1.7V for ratiometric measurements. AFE4300 can also measure body composition by applying a sinusoidal current into the body. The sinusoidal current is generated with an internal pattern generator and a 6-bit, 1-MSPS DAC. A voltage-to-current converter applies this sinusoidal current into the body, between two terminals. The voltage created across these two terminals as a result of the impedance of the body is measured back with a differential amplifier, rectified, and its amplitude is extracted and measured by the 16-bit ADC.
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Category   Semiconductors >  Data Converter ICs >  Analog Front End - AFE

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Texas Instruments AFE4300PNR

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Texas Instruments Analog Front End - AFE Weigh Scale/Body Comp AFE
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Texas Instruments AFE4300PN
Texas Instruments Analog Front End - AFE Weigh Scale/Body Comp AFE
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