I-NUCLEO-CN0216

概要

Developers use the Precision Weigh Scale solution from Analog Devices(I-NUCLEO-CN0216) to test, develop and prototype on the STM32F411 MCU using the NUCLEO-F411.

I-NUCLEO-CN0216 is a system for precision weigh scale signal conditioning that can be used in conjunction with a STM32F411, to create a complete precision weigh scale. The signal conditioning system uses the AD7791, a low-power buffered 24-bit sigma-delta ADC along with two external ADA4528-1 zero-drift amplifiers.

This solution provides a high DC gain with a single supply. Ultra-low noise, low-offset voltage, and low-drift amplifiers are used to amplify the low-level signal from the load cell. The circuit yields 15.3-bit, noise-free code resolution for a load cell with a full-scale output of 10 mV.

This solution allows a great flexibility in designing a custom low-level signal conditioning analog front end. It gives the user the ability to easily optimize the overall transfer function of the combined sensor-amplifier-converter circuit. The AD7791 maintains a good performance over the complete output data range (from 9.5Hz to 120Hz), which allows it to be used for weigh-scale applications operating at various low speeds.

This product is supplied by a third party not affiliated to STMicroelectronics. For the latest information on the specification and the package of the purchased parts, refer to the third party’s website at www.analog.com/EVAL-CN0216-ARDZ.