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VOCM in LT1994 LTspice model is not working

Pin VOCM in LT1994 is not works, it is totally work in wrong way. please correct it. :'(((((((((( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'(

There is no way, it's time to dying alone. :'(



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[edited by: mohammadsdtmnd at 4:28 PM (GMT 0) on 17 Dec 2018]
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  • Hi Mohammad:  I just ran the LT1994 jig while moving the Vocm pin from V- to V+.   The outputs Vcm tracked the voltage on the Vocm pin, except when the Vocm voltage approximately exceeded the limits of 1.1V from the bottom and 0.8V from the top.  (The actual limits I found in the sim were about 0.6V from the top and 0.8V from the bottom.)

    Maybe in your sim you are violating the input range on the Vocm pin?

    Glen.

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  • Hi Mohammad:  I just ran the LT1994 jig while moving the Vocm pin from V- to V+.   The outputs Vcm tracked the voltage on the Vocm pin, except when the Vocm voltage approximately exceeded the limits of 1.1V from the bottom and 0.8V from the top.  (The actual limits I found in the sim were about 0.6V from the top and 0.8V from the bottom.)

    Maybe in your sim you are violating the input range on the Vocm pin?

    Glen.

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