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…

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.

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…

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…

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…

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…

DAC architecture section of AD568x datasheets describes their internal structure as "string DAC followed by an output amplifier". According to description resistor string is fixed and buffer amplifier gain may be set to 1 or 2. But in this case it is…

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…