Texas Instruments recommends following a star-grounding topology, keeping analog and digital grounds separate, and using a solid ground plane to minimize noise. Additionally, keep the input and output traces short and away from each other to prevent crosstalk.
Use a high-quality, low-ESR capacitor (e.g., 10uF ceramic) between VCC and GND, and place it as close to the device as possible. Additionally, use a separate power supply for the analog and digital sections, and ensure the power supply is clean and well-regulated.
While the datasheet specifies a maximum clock frequency of 20MHz, the actual maximum frequency depends on the specific application and layout. As a general rule, it's recommended to keep the clock frequency below 10MHz to ensure reliable operation and minimize noise.
The TLC5615CDGK has a limited output current of 30mA per channel. To handle this limitation, use an external buffer or amplifier to increase the output current, or use a lower-impedance load to reduce the current required.
Use a 3-wire serial interface (SCL, SDA, and CS) to program the internal registers. Ensure the CS pin is properly toggled to enter and exit programming mode, and use a reliable communication protocol to prevent data corruption.
TLC5615CDGK datasheet
by Texas Instruments
