hiSkill_11
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Hi,, Guys,
I can't explaine why there are small ringing(several mv) riding at the outputs of the PGA(class AB opamp with gain resistors) when I simulated step response. Please kindly see the attached. Von is basically bais at half VDD(2.5v), while Vop is the true output of the amplifier, when Vop transition, Von will ring but dampled within milli voltages. What can casue that? nonstable circuit or simulator setting? I used default setting for tran analysis in spectre.
Regards, hiSkill
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