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 capacitor (e.g., 10nF) between the analog input pins and the analog ground pin.
Use a clock source with a stable frequency (e.g., 10MHz) and a low jitter (<100ps). Ensure the clock signal has a clean, square waveform with a 50% duty cycle. Use a series resistor (e.g., 22Ω) to terminate the clock signal and reduce reflections.
Power up the analog supply (AVDD) first, followed by the digital supply (DVDD). Ensure the analog supply is stable before applying the digital supply. Also, ensure the clock input (CLKIN) is stable before applying the analog input signal.
Use the ADC's built-in power-down mode (PD pin) to reduce power consumption when not converting. Also, consider using a lower clock frequency, reducing the analog input signal bandwidth, and optimizing the analog input signal amplitude to minimize power consumption.
Use a common clock source for all ADCs and ensure the clock signal is distributed equally to each device. Use the ADC's SYNC pin to synchronize the conversion process across multiple devices. Ensure the analog input signals are properly synchronized and aligned across all channels.
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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.
