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ADA4870 Powr-Up sequence.

Question asked by Keiichi.Okuji Employee on Oct 12, 2017
Latest reply on Oct 17, 2017 by yyang2

Hi,

 

I have question about ADA4870 Power-Up sequence.  Data sheet describes the initial power up sequence as below.

 

ON, INITIAL POWER-UP, AND SHORT-CIRCUIT
After initial power-up, the ON pin must be pulled low to ensure
that the amplifier is turned on. Subsequently, floating the ON
pin enables the short-circuit protection feature while the
amplifier remains on. While ON is held low, the short-circuit
protection feature is disabled.

 

However, I'm bit confusing how handle the ON pin in initial power up. Does ON pin need to keep low from turn on to before short circuit protection enable or it allows put ON pin to low once after power up to start up the amplifier?

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