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DRA821A: Restrictions on continuous use

Part Number: DRA821A

Hi

DRA821A4TGALMQ1 could support from -40 to125℃.

According to the following Datasheet at the chapter 8.4 Power-On-Hours (POH)

  https://www.tij.co.jp/jp/lit/ds/symlink/dra821a.pdf

"Automotive profile is defined as 20000 power on hours with a junction temperature as follows: 5%@-40°C, 65%@70°C, 20%@110°C, and 10%@125°C"

Question:

1) How about POH to 100%@125℃ ?

2) Is there any restriction to run the device all the time while keeping Tj =125℃ 

3) Is there any restriction to run the device all the time while keeping  its core's frequency = Max (e.g. 2GHz)

4)  At above table, POH for 1st line is 20000. Does it mean, the device can be used at the condition of "5%@-40℃,

65%@70℃、20%@110℃、10%@125℃) for 20000 hours (= 20000÷24 = 833days = 2years)??

Thanks and Best regards,

HaTa