Yes, you may use the internal reference voltage of AD5689R as an external reference voltage for AD5689.
AD5689R can drive up to 10mA load and the AD5689's reference current is only 90uA (using gain =1).hope that answers your question!
I made a board with a little routing mistake. I routed /RESET to GND. I don't know if my workaround was successful because i get no voltage at the DACs output.
Do I get back no data from the MISO by default?
Can it be that the module…
Can you share your schematic?
Can you also share SPI waveforms?
Is the AD5689 gain select pin classed as a logic pin?
The datasheet says to tie it to VLOGIC or GND, but can I drive it externally as long as I obey the thresholds as shown in Table 2?
The relevant part from Table 2:
Thanks for the help.
I understand your position but as for me I prefer that structure would be described as it is in reality. Some differences between two discussed structures may be observed in noise performance, modulation bandwidth code related effects, stability…
AD5689_WriteUpdate_DACREG(DAC_A,1000); // output
HAL_Delay(10); // delay 10ms
AD5689_WriteUpdate_DACREG(DAC_A,50000); // output
The AD5689 output spectral noise should be 100nV/rtHz, not 300nV/rtHz. This is an edit that we are currently working on as part of an update to the data sheet for that product.
In the AD5689R, figure 12, the vertical scale on the plot should…
Q1. What is new?
A1. The nanoDAC+(TM) family offers improved analog performance in terms of INL and glitch energy specifications.. Some members of the family, those with a part number ending in 'R', for example AD5686R, include a low drift…