Under the background of the rapid development of Industry 4.0 and intelligent manufacturing,the automation system puts forward higher requirements for the accuracy and stability of signal acquisition.As the core bridge between analog signal and digital processing,high-precision ADC determines the performance upper limit of the whole measurement and control system.The Sigma Delta ADC ADX121 introduced by
RANSUM Microelectronics,with its 20-bit resolution and high integration,provides a reliable and high-precision ADC solution for sensor measurement,industrial control system and other scenarios.
1.overview of high-precision ADC analog-to-digital converter ADX121AMSOP10
Sigma Delta ADC ADX121 is a precision ADC with low power consumption and high integration,which is packaged in MSOP-10.The high-precision ADC chip integrates a low drift voltage reference,an oscillator,a programmable gain amplifier(PGA),a power frequency interference filter and a digital comparator,which effectively simplifies the design of peripheral circuits.ADX121 input multiplexer of ADC analog-to-digital converter supports two differential inputs or four single-ended inputs for measurement,and PGA provides a wide input range from±256mV to 6.144 v,which can realize accurate acquisition of both weak signals and large dynamic signals.
2.High-precision ADC analog-to-digital converter ADX121AMSOP10 function
The internal digital filter of this high-precision ADC supports programmable output data rate from 10SPS to 3751SPS,and users can freely balance it according to sampling speed and noise requirements.The anti-power frequency interference filter can be configured to suppress 50Hz and 60Hz alone or simultaneously,which is especially suitable for industrial sites with complex power grid environment.In both continuous conversion mode and single conversion mode,the internal filter is single-cycle stable-after the single conversion,the device automatically enters the power-down state,and the standby power consumption is greatly reduced.
3.Characteristics of high-precision ADC analog-to-digital converter ADX121AMSOP10
ADX121 high-precision ADC supports 2.0V to 5.5V wide power supply voltage,and the current consumption is only 150µA in continuous conversion mode.Sigma Delta ADC with built-in programmable digital comparator can realize overvoltage and undervoltage alarm conveniently.The working temperature of ADC ranges from-40 C to 125°C,and it is packaged in a 3mm×3mm MSOP package,which makes it very suitable for portable sensors,battery tests,intelligent transmitters and other places with limited power and space.I2C interface provides four optional addresses to facilitate multi-node networking.
ADX121 is balanced in integration,power consumption and cost performance for industrial inspection,Internet of Things front-end and automation control technology projects requiring high-precision ADC.Yingshang Microelectronics continues to provide complete technical support and sample service.If necessary,you are welcome to inquire.
Shenzhen Ramsun Microelectronics Co.,Ltd（Ramsun International） is a vendor of the seimicondutor componets and the memory IC’s solution with clear market advantage. We still focus on the promotion for some famous semicondutor brand ,and specially take the RAM(Random Access Memory) as our core products.
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