Murata recommends a 4-layer PCB with a solid ground plane on the bottom layer, and a split power plane on the top layer. The DAC output should be routed away from the power plane to minimize noise coupling.
To ensure accurate voltage regulation, it is essential to decouple the input voltage with a 10uF ceramic capacitor and a 1uF ceramic capacitor in parallel, placed as close to the VIN pin as possible.
The NMV0515DAC can deliver up to 1.5A of output current, but it is recommended to limit the output current to 1A or less to ensure reliable operation and minimize thermal stress.
The DAC output voltage can be programmed using the I2C interface. The output voltage is set by writing a 16-bit code to the DAC register, where each LSB represents 1.22mV.
The NMV0515DAC has a power-on reset feature that initializes the DAC output to 0V during power-up. The output voltage will remain at 0V until a valid I2C command is received.
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