A couple of questions for AD8336

Dir Sir/Madam,

I have a couple of questions for AD8336 as following.

1)

What is the input-impedance of VGAI pin?

I can see the 1.28kohms on your datasheet page-20.

Does this means the impedamce,correct?

2)

Why is LPF(low pass filter) put at AN-934 page-4?

(closing output pin, 100ohm and 4.7nF)

I think that this means 36kHz cut off frequency.

eg) If I need the 20kHz cut off frequency, can I put the 20kHz LPF there?

3)

If I dont use the internal preamp on AD8336, how can I deal the opened 3 pins INPP, INPN, and PRAO?

In general, connect INPP to GND, and short INPN to PRAO, correct? It is similar as voltage follower circuit.

Thanks, KAOS

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    •  Analog Employees 
    on Aug 2, 2018 2:26 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

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    EZ Admin
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    •  Analog Employees 
    on Aug 2, 2018 2:26 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
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