ADX514 adopts the classic Delta-Sigma architecture,which enables it to maintain 24-bit no-missing-codes performance at the data output rate of 20kHz,with an effective resolution as high as 19 bits and corresponding root mean square noise as low as 2ppm.For vibration analysis,audio testing,high-precision weighing and other scenes that need to give consideration to speed and accuracy,this ADC chip can provide a wide enough dynamic range without sacrificing signal-to-noise ratio.
 

 

　　ADX514,an ADC chip,separates the digital interface power supply,supports 1.8V to 5V wide voltage logic level,and can be directly connected to low-voltage FPGA or MCU without additional level conversion circuit.The two-wire synchronous serial interface of ADC chip not only saves pin resources,but also facilitates low-cost isolation through optocoupler,which meets the rigid requirements of anti-interference and electrical isolation in industrial process control.
 

 

　　ADX514 has four differential input channels.Compared with single-channel ADC chip,it can greatly reduce the amount of peripheral analog switches in multi-sensor data acquisition system.The differential input structure itself has a strong ability to suppress common-mode noise,and with the synchronous sampling mode inside the chip,the phase deviation between multiple signals can be significantly reduced.The SSOP-20 package of ADC chip is a compact surface mount package with moderate pin spacing,which not only meets the requirements of high-density board layout,but also does not pose too high a challenge to the reflow soldering process.
 

 

　　For customers who are still purchasing ADS1254E,ADX514 model of ADC chip provides almost seamless software and hardware alternatives.Both of them adoptΔ-σarchitecture,the package and pin arrangement are basically the same,and the key electrical parameters such as data rate,reference voltage range and power consumption level are highly compatible.In the actual test,ADX514,an ADC chip,shows even better data in terms of low-frequency noise and long-term stability.More importantly,the domestic supply chain ensures the controllability of delivery and cost,and is a reliable backup option for orders affected by international material shortage.