ADS1120IRVAR datasheet by Texas Instruments

ADS1120IRVAR Frequently Asked Questions (FAQs)

• What is the recommended layout and placement for the ADS1120IRVAR?
  The ADS1120IRVAR requires careful PCB layout and placement to minimize noise and ensure accurate conversions. TI recommends placing the device close to the analog signal sources, using a solid ground plane, and keeping analog and digital traces separate.
• How do I optimize the ADC's performance for my specific application?
  To optimize the ADS1120IRVAR's performance, consider the input signal's frequency, amplitude, and impedance. Adjust the gain, offset, and sampling rate accordingly. Additionally, use the device's built-in calibration features and consider using an external reference voltage.
• What is the best way to handle the ADS1120IRVAR's digital output data?
  The ADS1120IRVAR outputs 24-bit data. To handle this data, use a microcontroller or FPGA with a 24-bit or 32-bit data bus. Consider using a SPI or I2C interface to communicate with the ADC. Ensure proper synchronization and data alignment to avoid errors.
• How do I ensure the ADS1120IRVAR's accuracy and linearity over temperature and time?
  To ensure accuracy and linearity, calibrate the ADS1120IRVAR regularly, especially during temperature changes. Use the device's built-in calibration features and consider using an external reference voltage. Additionally, ensure proper thermal management and minimize thermal gradients.
• What are the key considerations for powering the ADS1120IRVAR?
  The ADS1120IRVAR requires a clean, low-noise power supply. Use a high-quality voltage regulator and decoupling capacitors to minimize noise and ripple. Ensure the power supply can provide the required current, and consider using a separate analog and digital power supply.