Texas Instruments provides a recommended layout and routing guide in the DAC71408RHAR datasheet, but it's essential to follow good analog design practices, such as separating analog and digital grounds, using a solid ground plane, and minimizing noise coupling. Additionally, TI recommends using a 4-layer PCB with a dedicated analog layer and a dedicated power layer.
To ensure accurate voltage reference, use a high-precision voltage reference, such as the REF5025 or REF5030, and follow the recommended layout and routing guidelines. Also, consider using a voltage reference with a low temperature coefficient to minimize drift over temperature.
The maximum output current of the DAC71408RHAR is 5 mA per channel. However, it's essential to consider the output impedance and the load impedance to ensure that the output voltage remains accurate and stable.
To synchronize multiple DAC71408RHAR devices, use the SYNC pin to synchronize the conversion clock. You can also use an external clock source to drive the SYNC pin. Additionally, ensure that the devices are properly configured and that the data is loaded correctly to achieve synchronized output.
The recommended power-up sequence for the DAC71408RHAR is to power up the analog supply (AVDD) first, followed by the digital supply (DVDD). This ensures that the analog circuitry is properly biased before the digital circuitry is enabled.
DAC71408RHAR datasheet
by Texas Instruments
