Part Number: ISO1410
Hello,My customer made a prototype with ISO1410 and measured PWD parameter in the receiver side of the ISO1410. Then they found it was 62nsec while the datasheet specifies this value as 12.5nsec MAX.
Then they have two questions.
1.This 12.5nsec max in the datasheet is just max value if C_L is 15pF case. There is no issue for ISO1410 deivce itself.If their system can accept this longer PWD, it's OK. Is this understanding correct?2.Does longer PWD mean that this board has bigger C_L than 15pF?
Thanks for reaching out. Could you please confirm that customer has followed the test setup shown in Figure 42 of ISO1410 datasheet for testing for receiver PWD? I am particularly referring to including 50Ω/54Ω resistance across the supply as shown in test setup.
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.
While unspecified in the datasheet for the PWD setup and parameters, the rise and fall time of VI should be 1ns to 2ns in order to obtain the same results as from the datasheet. Also please make sure your test setup also has CL = 15pF.
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.