The recommended power-up sequence is to apply VCC first, followed by VREF, and then the digital inputs. This ensures proper device operation and prevents potential latch-up conditions.
The DAC8574 has an output voltage range of 0 to VREF. To ensure accurate output voltages, it's recommended to use an external voltage reference (VREF) that is within the specified range of 2.7V to 5.5V. Additionally, the output voltage should be buffered with an op-amp if it needs to drive a load.
The settling time of the DAC8574 is typically around 10μs to 15μs, depending on the output voltage range and the load capacitance. This is the time it takes for the output voltage to settle within 1 LSB of the final value after a code change.
Yes, the DAC8574 can be used in a ratiometric configuration, where the output voltage is proportional to the reference voltage (VREF). This can be useful in applications where the output voltage needs to track changes in the reference voltage.
The digital input signals to the DAC8574 should be driven with a CMOS-compatible logic level, with a maximum frequency of 50MHz. It's recommended to use a series resistor (around 1kΩ) to limit the input current and prevent damage to the device.
DAC8574IPWG4 datasheet
by Texas Instruments
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