[General] Fastest inbuilt ADC available in controllers

[ChansAlive]

Hi,
Can anybody suggest me which is fastest controller inbuilt adc available in market?

 

[doraemon]

Hello!

This is the wrong question.
If you are starting a project, you should have specs. Therefore you should know your sampling
speed requirements. Then the question would become: can anybody point me to a processor
with an internal SDC sampling at least at xxx ksps or msps?

Dora.

 

[ChansAlive]

Hi doraemon,
Thanks for the reply.
Actualy,my specs are pretty clear. I want to use a controller which has maximum sampling rate available in market...
I hope you got me...
I want the name of the controller which has maximum Adc speed prferrably> 10Msps) available in market
Thanking you....

 

[horace1]

have a look at TI's products
https://www.ti.com/lsds/ti/microcontrollers_16-bit_32-bit/overview.page

in particular DSPs
https://www.ti.com/lsds/ti/dsp/overview.page

 

[aProgrammer]

some examples :

MC10319 25MSPS
TDA8708 (video)
CA3318 15MSPS
AD9002 125MSPS
AD9012 75MSPS
...
and many others

the fastest I know is the AD9002 (125MSPS)

 

[horace1]

Innovative Integration
**broken link removed**

make some very fast data acquisition boards
**broken link removed**

 

[ChansAlive]

Hi horace Thanks for the reply..
@ aPrgrammer: I want to know the controller name with in built high speed ADC. NOt just standalone ADC module

 

[horace1]

Microchip's PIC24FJ128GC010 has 10Mbps ADC
**broken link removed**

or this NXP device with 80Mbps ADC
http://www.nxp.com/news/press-relea...high-speed-data-acquisition-applications.html
http://www.lpcware.com/content/project/Mixed-Signal-Logic-Analyzer-Oscilloscope-Lab-Tool-Solution

 

[bigdogguru]

Actualy,my specs are pretty clear.

As clear as mud.

The sample rate of an ADC is one of only many specifications required to make an intelligent choice of an ADC module, not to mention the many specification required to choose its associated microcontroller.

It's a bit like asking for the fastest vehicle to take you from point A to point B without any indications of what type of road exists between those two points. If the road is relatively level, well maintained asphalt paved, a Ferrari maybe a reasonable choice. However if it is off road Baja, Mexico, with its sand dunes, rocks and cactus patches, the Ferrari would probably not make it farther than a few meters from the starting point A.

For example, you have failed to mention the required resolution of the ADC. Is a sampling rate of 50MSPS at 6-bits preferable for your application, over a sampling rate of 25MSPS at 12-bits?

What level of offset, gain, and integral non-linearity errors are acceptable?

There are a myriad of other specs which need to be considered, not just for the ADC module, but for the associated microcontroller as well.

I'm in agreement with Dora, without more specifics, we are all just shooting in the dark.

Please elaborate on the specifics of your intended application.

Otherwise your query appears to have little to no relevant substance.


BigDog

 

[ChansAlive]

Hi BigDog,
Thanks for the reply...
I understood your concerns.
I will elaborate on the topic.
I want a micro-controller(Any controller), with a rather fast data acquisition capability. 12bit ADC is preferred. else 8 bit will do the work.
My primary aim to have a high data acquisition capabilty.
I was searching for such controller in the recent times and I want to check out if I missed any thing. If the NXP 80Msps is not worthy, I have to find somw way to interface separate ADC module to existing microcontroller to work with.
I hope you got my primary intention.
Thanking everyone...
Regards
ChanceAlive

 

[doraemon]

Hello!

If the NXP 80Msps is not worthy,

So 80 Msps is not enough?
I guess we are back to what we first said: what are the specs? You were talking about the fastest
possible internal ADC and you are now talking about an external sampler, so I guess you do have
specs. What is the least sampling rate you want to achieve?

Dora.

 

[ChansAlive]

Hi doraemon,
As I mentioned in the last post that my primary intention is data acqusition by using controller preferrably. If it is not possible to sample( may be more than 200MSPS) I will have to use standalone ADC module. But before that I want to know much I can achieve with the controller with inbuilt ADC available in the market...
I hope it's clear...
ChansAlive

 

[FvM]

To shine a light on another aspect of the "Ferrari in the desert" problem:
It would be reasonable to spend a few minutes thinking about the intended data path and data processing features. 80 MS/s of the said LPC4370 ADC can be transferred per DMA to internal SRAM and processed later, this (burst) speed can be probably not achieved to external memory. 200 MS/s practically excludes most processor solutions.

 

[nilses]

To shine a light on another aspect of the "Ferrari in the desert" problem:
It would be reasonable to spend a few minutes thinking about the intended data path and data processing features. 80 MS/s of the said LPC4370 ADC can be transferred per DMA to internal SRAM and processed later, this (burst) speed can be probably not achieved to external memory. 200 MS/s practically excludes most processor solutions.

Hello,

One of the best answers I have seen.

Is he going to sample Hip Hop Music or real time Radar data ?

BR

Nils

 

[horace1]

Hello,

One of the best answers I have seen.

Is he going to sample Hip Hop Music or real time Radar data ?

BR

Nils

I agree! what do you do with so much data?
I had an application about 10years ago using two ADCs sampling data at 65Mbps -
two 1K blocks of data were sampled, processed using a TI C6000 DSP then send over 100baseT to a PC where Matlab did further processing, etc etc.

 

[ChansAlive]

Hi every one. Thanks for the replies. FvM it helped very much. Thanks for the insight.
I know that I will be facing some bottle necks in the processing of data, still I want that much sample for my data acquisition system. I want to make sure that I'm not missing any controller better than LPC. And for the information I will be dealing with signals of frequencies above 50MHz.
Thanking you all...
ChansAlive