ACMP SLG46855-AP

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Jack_J
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Last seen: 2 years 6 months ago
Joined: 2020-03-06 22:55
ACMP SLG46855-AP

Hello,

I have start create project on SLG46855-AP.

I used ACMP with external vref and 32 mV hysteresis but it seems like this ACMP haven't 32 mV hysteresis.

What does purpose ACMP buffered PIN9 and 100uA pullup on input?

 

Thanks so much!

Jack

 

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SLG46855-AP
olehs
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Last seen: 1 year 7 months ago
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Joined: 2018-02-07 11:40
Hi Jack_J, 

Hi Jack_J, 

Thank you for your questions, 

Hysteresis option is available when using an internal Vref only, otherwise it doesn't work. 

Regarding buffered PIN9,  Each High Speed ACMP (ACMP0H and ACMP1H) has an optional Rail-to-Rail Input Buffer, which can be used along with the Gain divider to increase ACMP input resistance. However, Input buffer will increase an input offset voltage. Input Buffer eliminates the influence of external circuit on internal gain resistors

Regarding 100uA on input PIN, this is basically 100uA constant current source, which can be usefull to build the external circuits and to supply the sensors 

Best regards, 

Oleh Sapiha

Jack_J
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Last seen: 2 years 6 months ago
Joined: 2020-03-06 22:55
Thanks

Thanks