The recommended power-up sequence is to apply VCC first, followed by AVCC, and then DVCC. This ensures that the internal voltage regulators are powered up correctly.
To ensure accurate voltage output, it is essential to use a high-quality voltage reference, such as the Texas Instruments REF5025. Additionally, ensure that the output voltage is buffered with an op-amp, such as the OPA2824, to prevent loading effects.
The maximum update rate of the DAC716U is 1 MSPS (million samples per second). However, this rate can be limited by the interface used to communicate with the device, such as SPI or I2C.
To enter power-down mode, set the PD pin low. In this mode, the device consumes minimal power, but the output voltage is not guaranteed. To exit power-down mode, set the PD pin high and wait for the device to wake up and stabilize.
The offset and gain registers allow for fine-tuning of the output voltage range. The offset register adjusts the output voltage by a fixed amount, while the gain register scales the output voltage. These registers can be used to compensate for external circuitry or to customize the output voltage range.
DAC716U datasheet
by Texas Instruments
