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Operational Transconductance Amplifier

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r@m$

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can any one help me with a OTA circit to achieve the following specifications...


Process 180nm CMOS
Supply 1.8V
DC gain 80 dB
UGB 500MHz
Phase Margin 50 degree
Current consumption <4mA
Settling time 12.5 nS
Output swing 600m-1.2 V
Input referred noise <10nV/√Hz
 

Please also specify capacitance loading.
 

load capacitor 5pF
 

Pls try fold-cascode structure.
 
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    r@m$

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