This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
I had ordered a sample of ADS7813 and tried to get work with an Arduino board. And my problem is i cant get out a better resolution than two decimal place. The first 10 bit seems ok, from MSB, but the last 6 bit is bouncing pell-mell. Here are some conversion results:
The first column values is in voltage the second columns values is the conversion result.
I bulid the circuit in a bread-board i used the same capacitors as in the datasheet i tried another input values and i got the same results.
here is my code in Arduino (same as C):
Could you possibly post a schematic showing your connections to the ADS7813? The 'C' code is really not going to impact the last 6 LSBs toggling, that would be caused by you power, reference and/or the actual analog input circuitry.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Tom Hendrick:
Here is the wiring diagram:
I used the USB power i dont use any adapter. I tried a battery in place of the potentiometer and i got a same result.
So no one can help me?
In reply to Robert Katona:
Take a look over these articles:
Designing SAR ADC drive circuitry, Part I: A detailed look at SAR ADC operation. Analog Zone. Download at: http://www.analogzone.com/acqt0221.pdf
Designing SAR ADC drive circuitry, Part II: Input behavior of SAR ADCs. Analog Zone. Download at: http://www.analogzone.com/acqt1003.pdf
Designing SAR ADC drive circuitry, Part III: Designing the optimal input drive circuit for SAR ADCs. Analog Zone. Download at: http://www.analogzone.com/acqt0312.pdf
Hi Robert, can you please help me about using ADS7813 with arduino?
I try to use these codes but it dont work, i need immediately help.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.