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HX711 - 24-Bit Analog-to-Digital Converter

Datasheet Summary

Description

Based on Avia Semiconductor’s patented technology, HX711 is a precision 24-bit analogto-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor.

Features

  • Two selectable differential input channels.
  • On-chip active low noise PGA with selectable gain of 32, 64 and 128.
  • On-chip power supply regulator for load-cell and ADC analog power supply.
  • On-chip oscillator requiring no external component with optional external crystal.
  • On-chip power-on-reset.
  • Simple digital control and serial interface: pin-driven controls, no programming needed.
  • Selectable 10SPS or 80SPS output data rate.

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Datasheet preview – HX711

Datasheet Details

Part number HX711
Manufacturer Avia semiconductor
File Size 156.71 KB
Description 24-Bit Analog-to-Digital Converter
Datasheet download datasheet HX711 Datasheet
Additional preview pages of the HX711 datasheet.

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Full PDF Text Transcription

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HX711 24-Bit Analog-to-Digital Converter (ADC) for Weigh Scales DESCRIPTION Based on Avia Semiconductor’s patented technology, HX711 is a precision 24-bit analogto-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. The input multiplexer selects either Channel A or B differential input to the low-noise programmable gain amplifier (PGA). Channel A can be programmed with a gain of 128 or 64, corresponding to a full-scale differential input voltage of ±20mV or ±40mV respectively, when a 5V supply is connected to AVDD analog power supply pin. Channel B has a fixed gain of 32. Onchip power supply regulator eliminates the need for an external supply regulator to provide analog power for the ADC and the sensor.
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