Looking to rent a data generator. Advice needed...

[MM]

Hi all,

I need to find a digital data generator available for rent (i.e. I need
something standard) that I could use to generate two 16-bit phase shifted
sine waves. It should support sampling rates up to 70 MHz and have an
external clock option. So far, the best I could find is Agilent pattern
generator modules for their modular logic analyzer, which I would have to
rent as well... Can anyone recommend a cheaper solution?


Thanks,
/Mikhail

 

[Tim Shoppa]

(i.e. I need
something standard) that I
could use to generate two 16
bit phase shifted sine waves.

The AD9954 DDS evaluation board is available off-the-shelf (circa $250)
and comes with PC software to drive it. It's certainly capable of your
desired programmable phase shift, the gotcha is that it's only 14 bits.

Tim.

 

[MM]

"Tim Shoppa" <shoppa@trailing-edge.com> wrote in message
news:1109081230.103160.308140@z14g2000cwz.googlegroups.com...

The AD9954 DDS evaluation board is available off-the-shelf (circa $250)
and comes with PC software to drive it. It's certainly capable of your
desired programmable phase shift, the gotcha is that it's only 14 bits.

I actually have this board The problem is that I need a digital source to
drive a DAC board.

/Mikhail

 

[Rob Gaddi]

I interfaced a pair of AD9852 eval boards with a National Instruments
PCI-6534, then spinning a quick level translator board to move the
signal levels down to 3.3V. After experiencing great grief along the
way, let me mark that down as NOT a recommended solution.

Let's go back to the specs. If you've already got DDS chips handling
the RF output then why on earth do you need to run the control lines up
at 70 MHz?

MM wrote:

"Tim Shoppa" <shoppa@trailing-edge.com> wrote in message
news:1109081230.103160.308140@z14g2000cwz.googlegroups.com...

The AD9954 DDS evaluation board is available off-the-shelf (circa $250)
and comes with PC software to drive it. It's certainly capable of your
desired programmable phase shift, the gotcha is that it's only 14 bits.



I actually have this board The problem is that I need a digital source to
drive a DAC board.

/Mikhail

 

[MM]

"Rob Gaddi" <rgaddi@bcm.YUMMYSPAMtmc.edu> wrote in message
news:cvfqnk$5mi@gazette.corp.bcm.tmc.edu...

Let's go back to the specs. If you've already got DDS chips handling
the RF output then why on earth do you need to run the control lines up
at 70 MHz?

The DDS has nothing to do with my original question. I need to test a DAC
(AD9786) board and it will only accept a digital signal.

/Mikhail