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It is Normal that in a OTA amplifier in WI the gm plot shows very lows values?

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adamantiumxx

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Hello guys.

i am designing a OTA in weak inversion... and the voltage gain looks good but the gm behavior shows very low values at low frequencies it this normal?
I calcuate that from the ratio of the output current over the voltage input. It this correct?

OTA.png

its only for gathering the idea for weak inversion behavior, but this doubt is killing me...
:roll:
 

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