Texas Instruments recommends a 4-layer PCB with a solid ground plane, and placing the ADC close to the analog signal sources. Decoupling capacitors should be placed as close as possible to the VDD and VREF pins. A dedicated analog ground plane is also recommended.
Optimizing the ADC's performance involves selecting the right gain, offset, and sampling rate for your application. You should also consider the input signal's frequency, amplitude, and noise characteristics. TI provides an ADC performance calculator tool to help with this process.
The ADS1100A4IDBVT's performance is affected by temperature, with changes in offset, gain, and noise. TI provides temperature coefficients for these parameters in the datasheet. You should consider temperature compensation or calibration in your design to ensure accurate measurements.
To minimize EMI and ensure EMC, use a shielded enclosure, keep analog and digital signals separate, and use differential signaling. You should also follow good PCB design practices, such as using a solid ground plane, and placing EMI filters or ferrite beads on the power and signal lines.
TI recommends powering up the VDD pin first, followed by the VREF pin. When powering down, the sequence should be reversed. This ensures that the internal voltage regulators and references are properly initialized and shut down.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
