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AD8250 - AD8253 spice model LTspice results

ovvi
on Jan 25, 2016

Hello,

I would like to simulate with LT Spice IV the simple AD8250 (and related AD8253) amplifier.

I use VS+=15V, VS-=-15V, A0=A1=DGND=ground, WR=VS- (=-15V) and I apply an input positive signal In+=+5V. Negative Input IN-=ground. Output reference REF=ground.

The output is tied to -10V.

For any input signal I tried, seems that there is on the output an offset of -15V. In fact if I put REF=+15V then the circuit works fine (for a limited range of input compared what it is written in datasheet).

Please anybody went already through this issue and can answer to this question, or can anybody do a quick verification to help me anyway?

Thank you very much in advance.

Regards

Andrea

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    •  Analog Employees 
    on Aug 2, 2018 3:21 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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    •  Analog Employees 
    on Aug 2, 2018 3:21 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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