The recommended power-up sequence is to power up the digital supply (VDD) first, followed by the analog supply (AVDD). This ensures that the digital circuitry is powered up before the analog circuitry, which helps to prevent any unwanted analog output voltages during power-up.
To ensure accurate output voltages, it is recommended to use a high-precision voltage reference (VREF) and to keep the analog supply (AVDD) and voltage reference (VREF) noise-free. Additionally, the output voltage can be calibrated by adjusting the offset and gain registers.
The maximum output current of the DAC6574 is 10 mA. However, it is recommended to limit the output current to 5 mA or less to ensure accurate output voltages and to prevent overheating of the device.
The DAC6574 can be interfaced with a microcontroller using a serial interface such as SPI or I2C. The microcontroller can send commands and data to the DAC6574 to configure the device and update the output voltage. The DAC6574 also has a built-in FIFO buffer that can store up to 32 data words, allowing for fast and efficient data transfer.
The CLR pin is an active-low clear pin that can be used to reset the DAC6574 to its power-up state. When the CLR pin is pulled low, the device resets and the output voltage returns to its default state. The CLR pin can be used to synchronize multiple DAC6574 devices or to reset the device in case of an error.
DAC6574IDGSG4 datasheet
by Texas Instruments
