The recommended power-up sequence is to apply the analog supply voltage (AVDD) first, followed by the digital supply voltage (DVDD) and then the clock signal. This ensures proper initialization of the device.
To optimize the analog input impedance, use a low-impedance source, such as a buffer amplifier, and ensure the input signal is properly terminated. Additionally, consider using a differential input configuration to reduce common-mode noise.
The maximum clock frequency for the ADS5463 is 650 MSPS. However, the actual achievable clock frequency may be limited by the specific application, PCB layout, and signal integrity considerations.
The ADS5463 outputs 14-bit data in a binary two's complement format. Ensure that your digital signal processing chain is configured to handle this format correctly, and consider using a FIFO or other buffering mechanism to handle the high-speed data output.
To minimize noise and ensure optimal performance, follow good PCB design 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 power plane and a solid ground plane.
ADS5463MPFPEP datasheet
by Texas Instruments
