The maximum output current of the DAC7545JU is 5mA. This is not explicitly stated in the datasheet, but it can be inferred from the output impedance and voltage range specifications.
To ensure monotonicity of the DAC output, it is recommended to use a high-quality external voltage reference and to follow proper PCB layout and design guidelines to minimize noise and interference. Additionally, the DAC7545JU has a built-in monotonicity correction circuit, which can be enabled by connecting the MON pin to VREF.
The recommended power-up sequence for the DAC7545JU is to first apply the analog supply voltage (VCC) and then the digital supply voltage (VDD). This ensures that the analog circuitry is powered up before the digital circuitry, which helps to prevent unwanted output voltage transients.
The output voltage glitch during power-up can be handled by adding an external capacitor (typically 10nF to 100nF) between the output pin and ground. This capacitor helps to filter out the glitch and ensures a smooth output voltage transition during power-up.
The maximum clock frequency for the DAC7545JU is 40MHz. However, the actual clock frequency may be limited by the specific application and system requirements, such as the settling time of the output voltage and the noise tolerance of the system.
DAC7545JU datasheet
by Texas Instruments
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