"Request for Replacement: Alternative to AD9713B Converter

Hi Dieg0p 

We will check your concern and provide update.  Please help to share your application and/or schematic diagrams, to better assess what alternative that suit your need.

Thanks and kind regards,

Alex

Thank you very much for your help, Alex.

I can send you a snapshot of the schematic where we use 4 units of the AD9713 that we need to replace:

Two are for FWD channels and two for AFT channels. As I mentioned in my previous post, our client requires us to maintain the same functionality. They want to use a new DAC that does not need an input clock signal (in my opinion, this is due to concerns about potential noise that could be introduced by this clock signal in a DAC incorporating such a signal), and that at least meets the specifications of this AD9713.

Best regards, and thank you in advance.

Diego

Hello,

You may want to consider the DAC08 if one is only interested in changing the DAC itself while noting that the AD9713B in above circuit is only used as an 8-bit DAC with 4 LSB's grounded.   The DAC08 can also be operated without a clock (transparent mode) such that any change in data inputs will result in change in output.   Not aware of any other DACs that operate in this mode (i.e. without use of clock latching signal ).......hence the DAC08 was selected.


Note that this application shows that the AD9713B is ONLY used to change a DC value at output of the op amp with no consideration for generating a spectral clean "AC" waveform (which would be case if clock was supplied to the AD9713B).   Since DAC08 only produces 2 mA full-scale current ( 1/10th of AD9713B).............the resistors used to interface to op amp and set gain of op amp can be increased.  One may also want to update the AD811 to a new amplifier also.

Thank you for your detailed explanation. I sincerely appreciate the insights you have provided regarding the DAC08, particularly its ability to operate in transparent mode. This aspect was not something I had considered before, and I will certainly take it into account moving forward. Additionally, your clarification on the AD9713B’s role in adjusting DC values rather than generating a clean AC waveform is very helpful. I also find your point about resistor selection and potential amplifier updates quite valuable. Thanks again for your guidance and technical expertise.