AFE4300EVM-PDK
ActiveEVALUATION MODULE FOR AFE4300
Deep-Dive with AI
Search across all available documentation for this part.
AFE4300EVM-PDK
ActiveEVALUATION MODULE FOR AFE4300
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | AFE4300EVM-PDK |
|---|---|
| Function | Weight Scale |
| Secondary Attributes | Graphical User Interface (GUI), SPI/USB Interface(s) |
| Supplied Contents | Cable(s), Board(s) |
| Type | Reference Design |
| Utilized IC / Part | AFE4300 |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Box | 1 | $ 238.80 | |
Description
General part information
AFE4300 Series
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. The weight measurement chain includes an instrumentation amplifier (INA) with the gain set by an external resistor, followed by a 6-bit digital-to-analog converter (DAC) for offset correction, and a circuit to drive the external bridge/load cell with a fixed 1.7 V for ratiometric measurements.
The 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 the amplitude is extracted and measured by the 16-bit ADC.
The AFE4300 operates from 2 V to 3.6 V, is specified from 0°C to +70°C, and is available in a LQFP-80 package.
Documents
Technical documentation and resources
