Re: AD9833 waveform generator

On Wed, 26 Feb 2025 15:47:19 +0100, Jeroen Belleman
<jeroen@nospam.please> wrote:

Did anyone successfully use the AD9833 waveform generator
chip? Was there anything dodgy in the serial data interface?
I can't seem to make it behave. Even the reset command
does different things on successive writes.
>
The serial interface signals look fine on the scope, but
the chip refuses to comply. I randomly get low-level
sine-like output, or full 5V swing square waves, or
just a flat 340mV, but nothing like what I'm actually
trying to obtain.
>
Jeroen Belleman

We haven't used that chip, but ADI does totally bizarre digital parts
of otherwise excellent analog ICs.

One chip has an SPI interface where one sends an SPI command to tell
the chip which clock edge that the SPI interface uses.

You could get the eval board and scope it. Good luck asking for actual
support.