Application of domestically produced ADC replaceable ADS1230 chip in weighing system
Time:2023-12-15
Views:1195
Electronic scales are currently commonly used measuring instruments and are widely used in people‘s daily lives. Due to the extremely small signal output by weight sensors, it is very difficult to accurately measure this small signal. When designing a weighing system, there are several main issues that need to be addressed:
(1) How to provide extremely low input reference noise (RTI).
(2) Temperature drift. In practical applications, sensors may have measurement range errors and misalignment errors, and their output voltage will constantly change with temperature changes. As time and temperature change, achieving long-term stability in terms of offset drift and gain in analog circuits is key to improving the overall accuracy of the system.
(3) Pressure bridge sensors will have nonlinear outputs under external forces.
This article analyzes the reasons that affect accuracy in weighing systems. Introduce the low noise, low drift, and high-resolution ADC characteristics of Guoxin Sichen and its hardware circuit design in weighing systems. The domestically produced ADC is fully compatible with ADS1230 in terms of performance, and can also be replaced with 100% compatibility in terms of software and hardware. If there is a demand, Guoxin Sichen can provide full technical support and supply channels.
ADS1230.png
The weighing system mainly uses microcontrollers and resistance strain gauge weighing sensors. The application of Guoxin Sichen ADC system has the characteristics of fast and accurate weighing, stable data, convenient use, and strong anti-interference ability. The characteristics of this ADC are as follows:
1. This is a complete front-end solution for bridge sensor applications, including scales, strain gauges, and pressure sensors, with onboard low noise programmable gain amplifiers, onboard oscillators, and precision 20 bit ADCs.
2. The gain of low-noise PGA is 64 or 128, supporting full scale differential input of ± 39mV or ± 19.5mV, respectively.
3. This ADC has a 20 bit effective resolution and consists of a 3rd order modulator and a 4th order digital filter. Supports two data rates: 10SPS (with both 5Hz and 60Hz suppression) and 80SPS.
4. Effective value noise: 40nV (G=128) at 10SPS; 88nV (G=28) at 80SPS.
5. Power range: 27V to 53V, operating within the temperature range of 40 ℃ to+85 ℃.
(1) How to provide extremely low input reference noise (RTI).
(2) Temperature drift. In practical applications, sensors may have measurement range errors and misalignment errors, and their output voltage will constantly change with temperature changes. As time and temperature change, achieving long-term stability in terms of offset drift and gain in analog circuits is key to improving the overall accuracy of the system.
(3) Pressure bridge sensors will have nonlinear outputs under external forces.
This article analyzes the reasons that affect accuracy in weighing systems. Introduce the low noise, low drift, and high-resolution ADC characteristics of Guoxin Sichen and its hardware circuit design in weighing systems. The domestically produced ADC is fully compatible with ADS1230 in terms of performance, and can also be replaced with 100% compatibility in terms of software and hardware. If there is a demand, Guoxin Sichen can provide full technical support and supply channels.
ADS1230.png
The weighing system mainly uses microcontrollers and resistance strain gauge weighing sensors. The application of Guoxin Sichen ADC system has the characteristics of fast and accurate weighing, stable data, convenient use, and strong anti-interference ability. The characteristics of this ADC are as follows:
1. This is a complete front-end solution for bridge sensor applications, including scales, strain gauges, and pressure sensors, with onboard low noise programmable gain amplifiers, onboard oscillators, and precision 20 bit ADCs.
2. The gain of low-noise PGA is 64 or 128, supporting full scale differential input of ± 39mV or ± 19.5mV, respectively.
3. This ADC has a 20 bit effective resolution and consists of a 3rd order modulator and a 4th order digital filter. Supports two data rates: 10SPS (with both 5Hz and 60Hz suppression) and 80SPS.
4. Effective value noise: 40nV (G=128) at 10SPS; 88nV (G=28) at 80SPS.
5. Power range: 27V to 53V, operating within the temperature range of 40 ℃ to+85 ℃.
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