Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep analog and digital signals separate. Use short, direct traces for the analog output, and avoid routing digital signals near the analog output. Additionally, use a low-ESR capacitor for the VREF pin and a 0.1uF capacitor for the AVDD pin.
The DAC8718SRGZT has an internal calibration circuit that is enabled by default. However, if calibration is required, it can be done using the CAL pin. The calibration procedure involves applying a voltage to the CAL pin, then reading the resulting output voltage to determine the gain and offset errors. The calibration data can then be stored in an external EEPROM or flash memory.
The recommended power-up sequence is to apply the analog power supply (AVDD) first, followed by the digital power supply (DVDD). The digital power supply should be applied after the analog power supply has reached its nominal voltage. Additionally, the DAC8718SRGZT should be in a reset state during power-up, and the reset pin should be released after the power supplies have stabilized.
The DAC8718SRGZT has a maximum junction temperature of 150°C. To ensure reliable operation, the device should be mounted on a PCB with a thermal pad connected to a solid ground plane. In high-temperature environments, consider using a heat sink or a thermal interface material to reduce the thermal resistance. Additionally, ensure good airflow around the device to prevent overheating.
The DAC8718SRGZT has built-in ESD protection, but it is still important to handle the device with care. Use an anti-static wrist strap or mat when handling the device, and avoid touching the pins or exposed metal parts. Store the device in an anti-static bag or container when not in use. Additionally, use a soldering iron with an anti-static tip to prevent damage during soldering.
DAC8718SRGZT datasheet
by Texas Instruments
