ACMP as Differential Receiver

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colin17814
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ACMP as Differential Receiver

Can the analog comparators be configured to act as a receiver for a differential signal (+/-5V), with the two pairs on the plus and minus of the ACMP. The spec has the max negative voltage as 1.2V, does this not allow for a 5V signal?

 

Thanks

 

Colin Stanley

Device: 
Device Number: 
SLG46535V
pavloZ
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Last seen: 2 years 6 months ago
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Joined: 2018-01-31 12:50
Hi Collin,

Hi Collin,

no, any of GPAK pins not allowed to apply a negative voltage.

Regards,

Pavlo.

colin17814
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Thanks for the response, but

Thanks for the response, but I'm sorry, my question may not have been clear.

I want to apply a +5V signal to the negative side of a ACMP, but the datasheet suggests a maximum of 1.2V.

With a differential input; the two states are A= 0V, B = 5V, or A = 5V, B = 0V. I want to put A & B as the positive and negative imput to the ACMP

pavloZ
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Last seen: 2 years 6 months ago
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Joined: 2018-01-31 12:50
Hi Collin,

Hi Collin,

sorry for the misunderstanding,

the datasheet suggests a maximum of 1.2V working range because the reference could be up to 1200mV. Using differential pair you can drive them VDD to GND, please refer Absolute Maximum Conditions table, and ACMP offset values. Please also note you can set input gain for in+ up to x0.25 and for in- x0.5.

Please let me know if you have any questions.

Thanks and regards,

Pavlo