Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general analog IC layout guidelines, such as separating analog and digital grounds, using a solid ground plane, and minimizing noise coupling.
Use a high-quality, low-ESR capacitor (e.g., 10uF ceramic) as close as possible to the VCC pin, and a smaller capacitor (e.g., 100nF) near the AVCC pin. Ensure the power supply is clean and well-regulated, and consider adding a ferrite bead or inductor in series with the power supply to reduce noise.
The TLV2543CDBRG4 has a maximum sampling rate of 400 kSPS, but this can be limited by the system's clock frequency, analog input bandwidth, and digital output data rate. Consult the datasheet and application notes for specific guidance on achieving high-speed sampling.
The TLV2543CDBRG4 outputs 12-bit digital data in a serial format. You'll need to use a microcontroller or FPGA to receive and process the data. Ensure the receiving device is properly synchronized with the ADC's clock and data output, and consider using a FIFO or buffer to handle data bursts.
The TLV2543CDBRG4 has a typical power consumption of 15 mW at 3V and 400 kSPS. However, this can vary depending on the specific operating conditions, such as sampling rate, input voltage range, and output data rate. Consult the datasheet for detailed power consumption information.