The ADS1258IRTCR requires careful layout and routing to minimize noise and ensure accurate conversions. TI recommends using a 4-layer PCB with a solid ground plane, and keeping analog and digital signals separate. Additionally, use short, direct traces for the analog inputs and avoid crossing digital signals over the analog inputs.
The ADS1258IRTCR has a built-in calibration mechanism, but you may need to optimize the gain and offset calibration for your specific application. TI recommends using the ADS1258's built-in calibration commands and adjusting the gain and offset values based on your specific sensor or signal characteristics.
The ADS1258IRTCR requires a specific power-up sequence to ensure proper operation. TI recommends powering up the analog supply (AVDD) first, followed by the digital supply (DVDD), and then bringing the reset pin (RESET) high. This ensures that the internal analog and digital circuits are properly initialized.
The ADS1258IRTCR's high-speed digital outputs require careful handling to minimize signal degradation and electromagnetic interference (EMI). TI recommends using a low-impedance transmission line, such as a 50-ohm microstrip or stripline, and terminating the outputs with a 50-ohm resistor to match the impedance.
When using multiple ADS1258IRTCR devices, it's essential to synchronize their conversions to ensure coherent sampling. TI recommends using the SYNC pin to synchronize the conversions, and ensuring that the devices are clocked from a common clock source.
ADS1258IRTCR datasheet
by Texas Instruments
