Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital signals separate. The analog signals should be routed close to the ADC, and the digital signals should be routed away from the ADC. Additionally, the power supply lines should be decoupled with capacitors and ferrite beads to reduce noise.
The clock signal should be a clean, low-jitter signal with a frequency of 10-50 MHz. A clock signal with a frequency of 40 MHz is recommended for optimal performance. The clock signal should also be decoupled with a capacitor and a ferrite bead to reduce noise.
The recommended power-up sequence is to first apply the analog power supply (AVDD), followed by the digital power supply (DVDD), and then the clock signal. The power-down sequence should be reversed.
The ADS6242IRGZT outputs 16-bit data in a binary two's complement format. The output data is available on the D[15:0] pins, and the data is valid on the rising edge of the clock signal. The output data can be handled using a microcontroller or an FPGA, and it can be processed and analyzed using software or hardware tools.
The ADS6242IRGZT has an internal calibration circuit that can be used to calibrate the ADC. The calibration process involves applying a known input voltage to the ADC and then adjusting the internal calibration registers to achieve the desired level of accuracy. The calibration process should be performed at power-up and after any changes to the operating conditions.
ADS6242IRGZT datasheet
by Texas Instruments
