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Применения > > Precision Weigh Scale Design Using the AD7190 24-Bit Sigma-Delta ADC with Internal PGA

Precision Weigh Scale Design Using the AD7190 24-Bit Sigma-Delta ADC with Internal PGA (CN0102)

This circuit is a weigh scale system, which uses the AD7190, an ultralow noise, low drift, 24-bit Σ-Δ ADC with internal PGA. The AD7190 simplifies the weigh scale design because most of the system building blocks are included on the chip.


The AD7190 maintains good performance over the complete output data rate range, from 4.7 Hz to 4.8 kHz, which allows it 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 AD7190 (Simplified Schematic: All Connections Not Shown)

Возможности

  • 24-Bit ADC, handles fast data rates up to 4.8 kHz
  • Integrated PGA allows for wide array of sensors
  • High precision pressure applications

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Precision Weigh Scale Design Using the AD7190 24-Bit Sigma-Delta ADC with Internal PGA  CN0102

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