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.
Can I use ISO122 with +Vs = 15V and -Vs = 0V/GND, for both sides input and Output. And if we can then is it possible to have Input voltage range upto 12.5V with these supplies?
A negative power supply is required on both input and output to handle input/output signals down to 0V. For signals ranging from 0V to 12.5V, I recommend a power supply of -5V and +18V on both input and output sides.
Without negative supplies on input and output the lower end of the signal range would be approximately 3V.
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 Bruce Trump:
Thank you. What is the level of isolation voltage(min. to max.) that we can have if we use ISO122 IC with
+Vs1=5V, -Vs1=GND1=0V and +Vs2=5V, -Vs2=GND2=0V.
In reply to nilesh khupase1:
The power supply voltage does not affect the isolation voltage capability of the ISO122. The isolation voltage rating is determined by the integrity of the insulating materials used between the input and output sections.
The power supply voltages you propose will not allow the ISO122 to pass a signal. The minimum rated supply is +/-4.5V (or 9V, single supply). Signal swing capability with this minimum supply would be very limited.
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.