Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep analog and digital signals separate. Use short, direct traces for analog signals, and avoid crossing digital signals over analog signals. Also, use a common mode filter and a ferrite bead to filter out high-frequency noise.
Calibration involves adjusting the offset and gain of the ADC. Use the CAL Shorts pins to short the input channels to the internal reference voltage. Then, use the CAL pin to initiate calibration. The device will adjust its internal offset and gain to match the reference voltage. Refer to the datasheet for specific calibration procedures.
The maximum sampling rate of the ADS1253E/2K5 is 30 kSPS. As the sampling rate increases, power consumption also increases. To minimize power consumption, use the lowest sampling rate required for your application. You can also use the device's power-down modes to reduce power consumption when not in use.
Use external voltage limiting resistors and diodes to protect the device from overvoltage conditions. For undervoltage conditions, use a voltage supervisor or a reset IC to monitor the supply voltage and reset the device if it falls below a certain threshold.
Use a high-quality, low-jitter clock source, such as a crystal oscillator or a high-frequency clock generator. A stable clock source ensures accurate conversions and minimizes jitter-induced errors. Avoid using the internal clock generator, as it may introduce additional noise and jitter.
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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.
