How to use 1 channel achieve multi-channel DAQ?

[Alfanso]

I am designing a system which need to have 20 analog input channels. Each channel need to have 1Msps. I noticed that I can not find right product in NI. To use multi DAQ card will cost us a lot.
So, I am think to use one channel in NI's DAQ card to take care of several analog input in my case. I am wondering that if anyone has done this before? Is it possible?
Thank you very much.

[RIO-Todd]

Alfanso,

If you use just one channel on a DAQ device, you will still need to multiplex your 20 channels onto the one channel of the device. Doing this will still reduce the sampling rate per channel by a factor of 20.

Our fastest multifunction DAQ devices are the simultaneous sampling series. The PCI-6110 (linked below) has 4 input channels that can each sample at a maximum 5 MS/sec. With 5 PCI-6110 devices, you would have the capability of sampling 20 channels at 5 MS/sec each. This would be an excellent solution for your application. I hope this helps.

NI PCI-6110
http://sine.ni.com/apps/we/nioc.vp?cid=11888〈=US

Regards,

Todd D
NI Applications Engineer