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Применения > > Precision Weigh Scale Design Using the AD7192 24-Bit Sigma-Delta ADC with Internal PGA

Precision Weigh Scale Design Using the AD7192 24-Bit Sigma-Delta ADC with Internal PGA (CN0119)

This circuit is a weigh scale system that uses the AD7192. The AD7192 is an ultralow noise, low drift, 24-bit Σ-Δ converter that includes a PGA. Therefore, the device simplifies the weigh scale design because most of the system building blocks are included on chip. Since the part operates with an output data rate from 4.7 Hz to 4.8 kHz and maintains good performance over the complete output data rate range, this allows the part to be used in weigh scale systems that operate at low speeds along with higher speed weigh scale systems, such as hopper scales.


Figure 1. Weigh Scale System Using the AD7192 (Simplified Schematic: All Connections Not Shown)

Возможности

  • Handles fast data rates up to 4.8 kHz
  • 24-bit pressure application circuit
  • Integrated PGA allows for wide array of sensors

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