The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital supply (DVCC). This ensures that the analog and digital sections of the device are powered up correctly.
To ensure accurate output voltage levels, it is essential to use a high-quality voltage reference (VREF) and to decouple the VREF pin with a capacitor to reduce noise. Additionally, the output voltage should be buffered with an op-amp to prevent loading effects.
The DAC5662IPFBR can sink or source up to 10 mA of output current. However, it is recommended to limit the output current to 5 mA or less to ensure accurate output voltage levels and to prevent overheating.
To implement a bipolar output voltage range, you can use an external op-amp to amplify the output voltage of the DAC. The op-amp can be configured to provide a gain of -1, which will invert the output voltage and allow for a bipolar output range.
The DAC5662IPFBR's performance is affected by temperature, with the output voltage accuracy and linearity degrading as the temperature increases. It is essential to consider the temperature range of the application and to use temperature compensation techniques to ensure accurate output voltage levels.
DAC5662IPFBR datasheet
by Texas Instruments
