Texas Instruments recommends a 4-layer PCB with a solid ground plane, and placing the ADS1213P close to the analog signal sources to minimize noise. Additionally, it's recommended to use a separate analog ground plane and to keep digital signals away from the analog signals.
To optimize the ADC's performance, it's essential to understand the noise floor and the signal-to-noise ratio (SNR) requirements of your application. Adjust the gain, filter settings, and sampling rate according to your specific needs. Additionally, consider using the ADS1213P's built-in features such as the programmable gain amplifier (PGA) and the digital filter to improve performance.
The ADS1213P outputs 24-bit data, which can be handled in various ways depending on the microcontroller or digital signal processor (DSP) used. It's recommended to use a FIFO or a buffer to handle the data, and to consider using a DMA (Direct Memory Access) controller to reduce the load on the processor.
To ensure accuracy and linearity over temperature, it's essential to calibrate the ADS1213P during production and to consider using external components such as precision voltage references and resistors. Additionally, the ADS1213P has a built-in temperature sensor that can be used to compensate for temperature-related errors.
The ADS1213P requires a single 5V power supply, and it's recommended to use a low-noise, low-dropout regulator (LDO) to power the device. Additionally, it's essential to decouple the power supply lines with capacitors to reduce noise and ensure proper operation.
ADS1213P datasheet
by Texas Instruments
