The ADC128D818 is a 12 bit A/D convertor.The datasheet insists that output of the device is mapped in 16 bit register (two 8 bits registers).Can you let me know how 12bits data are mapped on to 16 bit registerIs the 12 bits data is mapped MSB stuffing or LSB bit stuffing, like “0000b+12 bit data” or “12 bit data + 0000b”?
When 2.5V input is applied to the device, the readout data was 0xF9A0”. The data seemed to be LSB stuffing.
I confirmed that the data are filled from MSB like “12 bit data + 0000b”.
In reply to Kikuo Mita:
This should have been specified in the user guide. We ran into this as well and it threw us off for awhile.
In reply to michael musset:
In reply to Michael Relko:
When you use the Low Power Conversion Mode it will take about 784ms. If you are using the continuous conversion mode or the one shot mode it depends on how many channels are enabled. This is described in sections 184.108.40.206.6 and 220.127.116.11.7 in the datasheet.
It will not cause a problem reading data more than once, you just see the old data that was there.
In reply to Michael Stout:
So, normally in the fast mode, it would take 100 ms approximately to get all values.
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. 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 respect to these materials. 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.