The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital inputs. This ensures proper device operation and prevents latch-up.
To ensure accurate voltage output, it is essential to use a stable and low-noise voltage reference, and to decouple the power supplies (VCC and AVCC) with suitable capacitors. Additionally, the output voltage should be buffered with an op-amp if it needs to drive a load.
The DAC902E/2K5 can handle clock frequencies up to 40 MHz. However, the maximum clock frequency may vary depending on the specific application and the quality of the clock signal.
The digital inputs to the DAC902E/2K5 should be driven by a low-impedance source, and the input signals should be properly terminated to prevent signal reflections. Additionally, the digital inputs should be synchronized with the clock signal to ensure proper data transfer.
The thermal impedance of the DAC902E/2K5 package is typically around 30°C/W. This value can be used to estimate the junction temperature of the device based on the power dissipation and ambient temperature.
DAC902E/2K5 datasheet
by Texas Instruments
