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Evaluation Boards - Analog to Digital Converters (ADCs)

Texas Instruments offers a number of different analog to digital converter evaluation boards, the most popular being the ADS1274EVM. The board features a 16-bit, low-power, high-speed, Sigma-Delta A/D converter.

ADS1274EVM Application Field & Working Principle

The ADS1274EVM (Evaluation Module) is an evaluation board developed by Texas Instruments for engineers to evaluate the performance of a wide range of high-accuracy data-acquisition devices including TI’s ADS1274 and ADS1278 Sigma Delta Analog to Digital Converters (ADC). The device presents 16-bit resolution with up to 87 dB signal-to-noise-ratio (SNR) in die-level form.

The ADS1274EVM is used as a bridge to connect between digital electronics systems such as a microcontrollers and analog sensors or transducers. It is effective in supplying serial data to analog signal sources, while still giving engineers control over the gain and conversion values. In addition to providing access to the SPI interface, it also offers a no-voltage stand-by source to enable the connection input sensing, as well as integrated temperature sensing and power regulation.

The ADS1274EVM operates on a single 3.3V power supply rail and provides 16-bit resolution at up to 80K samples per second. It has a conversion time of 34.5 μs (at a 12-bit sampling rate) as well as an integrated PGA (Programmable Gain Amplifier) that can be configured for gains of 2, 4, 8 or 16. The integrated 35 dB signal-to-noise ratio makes the device ideal for use in high-precision, low-noise applications such as medical imaging, data acquisition and smart grid applications.

The ADS1274EVM is supplied with an on-board oscilloscope, allowing the user to measure and monitor the accuracy of the signal conversion. There is also an integrated ADC data logger that captures and stores data from the ADC in a log file. This can be used to examine the performance of the device and make adjustments to the gain and conversion values accordingly.

The ADS1274EVM is portable and lightweight, making it easy to use and transport from site to site. It is available in various form factors, allowing it to be used in different configurations and different environmental requirements. In addition, the EVM is fully RoHS compliant, making it safe for use in shared working environments and a safe choice for laboratories.

Overall, the ADS1274EVM provides engineers with a powerful, low-power, high-accuracy analog-to- digital converter evaluation board that can be used in a wide range of applications. With its integrated features and functions, it enables users to quickly and easily evaluate the performance of a wide range of data-acquisition devices.

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