A 4-layer PCB with a solid ground plane, separate analog and digital power planes, and a star-configuration for the analog and digital grounds is recommended. Additionally, keep the analog and digital signal traces separate and avoid crossing them over each other.
Use a 100-ohm differential termination resistor (RT) between the positive and negative analog input pins, and a 50-ohm series resistor (RS) at the input of each differential pair to match the impedance of the source.
Use a single-ended clock input (CLKIN) with a 50-ohm series resistor and AC-couple it to the clock input pin. Ensure proper clock synchronization by using a clock buffer or a clock generator with a low jitter and a stable frequency.
Use the internal PGA (Programmable Gain Amplifier) to adjust the gain of the analog input signal. The PGA gain can be set to 1, 2, 4, or 8 using the SPI interface. Additionally, use the internal voltage reference (VREF) to set the analog input range.
Power up the device in the following sequence: AVDD, DVDD, and then CLKIN. Power down the device in the reverse sequence: CLKIN, DVDD, and then AVDD. Ensure that the power supplies are stable and within the recommended voltage range before applying the clock signal.
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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.
