Hello,

I have a question about the power management of AD5689.

Is it possible to power VDD and VLOGIC independent of each other?

That means I would like to shut down VLOGIC if the device is not in use.

I know that there are Power Down Modes but i…

Hi guys,

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…

DACI have a spicontroller that I  am selecting in 12bit mode but writing to a 24 bit device  AD5689RBRUZ do I have to use Slave Select or will a independant device select be sufficient. I am getting a output but can not get accurate control.  I am asserting…

It is possible to uses an internal voltage reference as exhobited in AD5689R also for another ICs within one project.

How much current it can delivery. I just want two uses two DACs, one with build in Ref Voltage (AD5689R) and one without internal Vref…

Hello.

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.

Hello,

Im using an AD5689 16 bit DAC to create DC bias current source, as indicated in the following picture and I'm detecting a high level of low frequency noise.

I represented L1 as an inductor for simplicity but  it is a filter with an high…

本人用AD5689RARUZ输出模拟量电压，电路参考芯片手册设计，程序已经调通可以正常控制输出电压，现在执行以下代码

  while(1)

  {

        AD5689_WriteUpdate_DACREG(DAC_A,1000); // output

        HAL_Delay(10); // delay 10ms

        AD5689_WriteUpdate_DACREG(DAC_A,50000); // output

        HAL_Delay(10); // delay 10ms

    }

测试实际波形是这样…

There are many mismatches in noise characteristics found in datasheets of nanodac and nanodac+ families.

Let's examine AD5689R one first.

DAC output NSD (DAC code = midscale, 10 kHz; gain = 2) is 300 nV/√Hz and LF noise 6 µV p-p. With gain 2 and…