What is HX711?
This is 24-Bit Analog-to-Digital Converter. An analog-to-digital converter (ADC) is an electronic device that converts continuous analog signals into discrete digital signals. Analog signals are continuous signals that vary smoothly over time, while digital signals are discrete signals that are represented by a sequence of discrete values. |
[PDF] Complete Technical Details can be found in the
HX711 datasheet
provided at this page.Summary in PDF FileHX711 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 Clock input is flexible It can be from an external clock source a crystal or the on chip oscillator that does not require any external component On chip poweron reset circuitry simplifies digital interface initialization There is no programming needed for the internal registers All controls to the HX711 are through the pins VAVDD 10uF Load cell AVDD INA INAInput MUX PGA Gain 32 64 128 Internal Oscillator 24 bit ADC Digital Interface Analog Supply Regulator FEAT |
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Here are several types of ADCs, including: Successive approximation ADCs - these are the most common type of ADC and use a binary search algorithm to determine the digital value of the input signal. Flash ADCs - these are the fastest type of ADC, but also the most expensive, as they use a large number of comparators to simultaneously convert the input signal. Delta-sigma ADCs - these are high-resolution ADCs that use oversampling and noise-shaping techniques to achieve high accuracy. Manufacturers : Avia semiconductor |
AVIA HX711 CONVERTER 24-Bit Analog-to-Digital Converter More Search |
Datasheet HX711.PDF DownLoad ( AVIA ) |
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