The recommended power-up sequence is to apply VDD first, followed by VREF, and then the digital interface signals. This ensures proper device operation and prevents potential latch-up conditions.
The DAC7678 has a rail-to-rail output stage, but the output voltage range is limited to VREF - 0.1V to VREF + 0.1V. To ensure accurate output voltages, it's recommended to use an external amplifier or buffer if the output needs to swing closer to the supply rails.
Clock jitter can affect the DAC7678's performance by introducing noise and distortion in the output signal. It's recommended to use a low-jitter clock source and to keep the clock signal path as short as possible to minimize jitter effects.
To implement a bipolar output voltage range, you can use an external amplifier or inverter to invert the output signal. Alternatively, you can use a voltage offset circuit to shift the output voltage range to the desired bipolar range.
It's recommended to keep the digital interface signals (e.g., SCLK, SDIN, and SYNC) as short as possible and away from noisy signals. Use a solid ground plane and avoid crossing digital signals over analog signals to minimize noise coupling.
DAC7678SRGER datasheet
by Texas Instruments
