The recommended power-on sequence is to apply VCC first, followed by VREF, and then the analog input signal. This sequence helps prevent unwanted voltage transients and ensures proper device operation.
To ensure accurate VREF, use a high-precision voltage reference source, such as the TLV431 or REF3020, and decouple the VREF pin with a 0.1-μF capacitor to reduce noise and ensure stability.
The maximum clock frequency for the TLC5628CDW is 40 MHz. Exceeding this frequency may result in reduced performance, increased power consumption, or even device damage.
The TLC5628CDW outputs data in a 2's complement format. To handle this, use a microcontroller or FPGA to receive and process the data, taking into account the 2's complement representation of negative numbers.
To minimize noise and ensure proper operation, use a multi-layer PCB with a solid ground plane, keep analog and digital signals separate, and use short, direct traces for the analog input and VREF connections.
TLC5628CDW datasheet
by Texas Instruments
