ADS7816EC/250G4

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Data acquisition technology is an important part of current electronics and automation industry, it is the process of measuring and collecting information from the physical world in order to convert it into a form that can be understood by computers. Analog to digital converters (ADC) are one of the key components of any data acquisition system, as they are responsible for converting analog signals into a digital form that can be processed by computers. The ADS7816EC/250G4 is an 8-channel, 16-bit SAR (Successive Approximation Register) ADC that is designed to bridge the gap between the analog and digital components of a data acquisition system.

What is the ADS7816EC/250G4?

The ADS7816EC/250G4 is a 16-bit successive-approximation register (SAR) analog-to-digital converter (ADC) integrated circuit (IC) manufactured by Texas Instruments. The device has 8 single-ended input channels and is powered by two 4.75V to 5V supplies. It is housed in an MSOP-10 package and has a maximum operating temperature range of -40°C to +125°C.

Application Field

The ADS7816EC/250G4 is used in a variety of applications, including industrial monitoring and data acquisition, process control, scientific and medical instrumentation, and automotive sensing. The device offers excellent input linearity for accurate sampling and is capable of converting and sampling input signals of up to ±200mV. The 8 analog input channels can be used to sample a range of different signals, including thermocouples, transducers, and resistive temperature detectors. The device also features a high speed 16-bit conversion rate of 8µs. All this makes the ADS7816EC/250G4 an ideal choice for high accuracy, reliable low-end data acquisition systems.

Working Principle

At the heart of the ADS7816EC/250G4 is a successive-approximation register (SAR) analog-to-digital converter (ADC). The SAR ADC is based on a “flash” architecture, where multiple bits of the digital output are tested, in parallel, against the analog input using multiple capacitors. Each capacitor holds a portion of the analog voltage and the SAR tests the value of each capacitor by comparing it to a preset reference voltage. By shifting in each bit of the digital output one-by-one and testing them against the analog input, the SAR can convert an analog signal into a digital one with an impressive 16-bit resolution.

Conclusion

The ADS7816EC/250G4 is a powerful and reliable 16-bit SAR ADC that is designed to bridge the gap between the analog and digital components of a data acquisition system. The device offers excellent input linearity for accurate sampling and is capable of converting and sampling input signals of up to ±200mV. With its 8 analog input channels and internal SAR ADC, the device is an ideal choice for low-end data acquisition systems.

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