Texas Instruments provides a layout guide in the datasheet, but it's recommended to follow a star-grounding approach, keep analog and digital grounds separate, and use a solid ground plane. Additionally, keep the analog input traces short and away from digital signals, and use a low-impedance source for the reference voltage.
Use a low-jitter clock source, such as a crystal oscillator or a high-quality clock generator. Route the clock signal as a differential pair, and use a clock buffer or repeater if the clock signal needs to be driven over a long distance. Also, ensure the clock signal is properly terminated to minimize reflections.
Use a low-pass filter with a cutoff frequency below the Nyquist frequency (half the sampling rate) to remove high-frequency noise and aliasing. A 2nd- or 3rd-order Butterworth or Bessel filter is recommended. The filter should be placed as close to the ADC input as possible to minimize signal degradation.
Follow the calibration procedure outlined in the datasheet, which involves applying a known input voltage and adjusting the offset and gain trim bits to achieve the desired accuracy. It's also recommended to perform calibration at multiple temperatures and supply voltages to ensure optimal performance over the entire operating range.
Power up the device in the following sequence: VCC, VREF, and then CLKIN. Power down in the reverse sequence. Ensure that the power supplies are stable and within the recommended operating range before applying the clock signal. Also, avoid applying an input signal before the device is fully powered up and stable.
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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.
