The ADS801U requires careful layout and routing to achieve optimal performance. TI recommends using a 4-layer PCB with a solid ground plane, and keeping the analog and digital signals separate. The analog input traces should be short and direct, and the digital output traces should be routed away from the analog inputs.
To optimize the ADS801U's performance, consider the following: choose the correct gain setting, adjust the sampling rate, and optimize the analog input filtering. Additionally, ensure the power supply is clean and well-regulated, and consider using a dedicated analog power supply if necessary.
The ADS801U's digital output data should be handled carefully to avoid data corruption. Use a FIFO or a dedicated buffer to handle the data, and consider using a DMA controller to offload the data transfer from the CPU. Ensure the data is clocked out of the ADC at the correct rate to avoid data loss or corruption.
The ADS801U requires calibration to ensure accurate conversions. Follow the calibration procedure outlined in the datasheet, and consider using an external calibration signal source. Ensure the calibration is performed at the correct temperature and voltage conditions.
Common pitfalls to avoid when using the ADS801U include: incorrect pin connections, inadequate power supply decoupling, and insufficient analog input filtering. Additionally, ensure the ADC is not operated outside its specified temperature range, and avoid using the ADC in a noisy or radiated environment.
ADS801U datasheet
by Texas Instruments
