The recommended power-up sequence is to apply the analog power supply (AVDD) first, followed by the digital power supply (DVDD), and then the clock signal. This ensures proper initialization of the device.
To optimize the analog input impedance, use a source impedance of 50 ohms or less, and ensure that the input signal is properly terminated. Additionally, consider using a buffer amplifier or an analog front-end (AFE) to match the input impedance to the ADC.
The ADS5237IPAG supports clock frequencies up to 65 MHz. However, the maximum clock frequency may vary depending on the specific application and system requirements.
To handle metastability issues, ensure that the clock signal is clean and stable, and that the ADC is properly synchronized with the clock signal. Additionally, consider using a metastability resolver or a synchronizer circuit to resolve any metastability issues.
To ensure optimal performance, follow good PCB layout and routing practices, such as separating analog and digital signals, using ground planes, and minimizing signal trace lengths. Additionally, consider using a 4-layer PCB with a dedicated analog ground plane.
ADS5237IPAG datasheet
by Texas Instruments
