Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital traces separate. Additionally, it's recommended to use a low-ESR capacitor for the AVCC pin and to keep the input traces as short as possible.
To handle the high input impedance of the TLV2544CD, it's recommended to use a buffer amplifier or an op-amp with a low output impedance to drive the input signal. Additionally, using a low-capacitance cable and keeping the input traces as short as possible can also help to minimize signal attenuation.
The maximum sampling rate of the TLV2544CD is dependent on the clock frequency and the conversion mode. In the fastest mode, the TLV2544CD can achieve a sampling rate of up to 400 kSPS. However, this may require careful layout and routing to minimize noise and ensure accurate readings.
The TLV2544CD has a built-in calibration circuit that can be used to calibrate the device. Additionally, Texas Instruments recommends performing a system-level calibration to account for any errors introduced by the PCB and other components. This can be done by applying a known input signal and adjusting the offset and gain of the ADC to achieve the desired accuracy.
Texas Instruments recommends powering up the AVCC pin first, followed by the DVCC pin, and then the digital inputs. This ensures that the analog and digital circuits are properly powered up and configured before the device begins operation.
TLV2544CD datasheet
by Texas Instruments
