A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the analog and digital grounds separate and connect them at a single point. Use a ferrite bead or a 10-ohm resistor in series with the VCC pin to reduce high-frequency noise.
Use a high-quality, low-ESR capacitor (e.g., 10uF ceramic) between VCC and GND, and a 100nF capacitor between AVCC and AGND. Place these capacitors as close to the device as possible. Ensure the power supply is stable and has a low ripple voltage.
A high-quality, low-jitter clock source is recommended. A crystal oscillator or a high-quality clock generator IC can be used. Ensure the clock frequency is within the specified range (10MHz to 40MHz) and has a duty cycle of 40% to 60%.
Use a high-quality, low-noise analog input signal. Ensure the analog input voltage is within the specified range (0 to VREF). Use a capacitor (e.g., 10nF) between the analog input pin and GND to filter out high-frequency noise. Avoid switching noise on the analog input lines.
Use a programming adapter or a development board with a compatible programmer (e.g., XDS100v3). Ensure the programming software is compatible with the device and follows the recommended programming sequence.
DS36C279MX/NOPB datasheet
by Texas Instruments
