The recommended power-on sequence is to power up the digital supply (VDD) before 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 should be buffered with an op-amp to prevent loading effects.
The DAC5571 can sink or source up to 5mA of output current. However, it is recommended to limit the output current to 2mA or less to ensure accurate output voltages and to prevent overheating.
To implement a voltage output range other than 0-5V, you can use an external amplifier or resistive divider network to scale the output voltage. For example, to get a 0-10V output range, you can use a non-inverting amplifier with a gain of 2.
The DAC5571's performance is affected by temperature, with the output voltage accuracy and linearity degrading at higher temperatures. It is recommended to operate the device within the specified temperature range (-40°C to 125°C) and to use thermal management techniques to keep the device temperature within a stable range.
DAC5571IDBVRG4 datasheet
by Texas Instruments
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