samiran_dam
Full Member level 2
Dear All,
I need to design an output stage (third stage) for a two-stage compensated opamp. I have gone through some related papers and text. After reading them, I have built-up some interpretations:
1. The main design specifications whilst designing the o/p stage are a) output swing, b) power dissipation (or efficiency), c) linearity (or THD). Please let me know are there anything else I need to consider.
2. My 2stage diff-amp works with 1.8 V - 0 V supply rail. So, the output stage also need to be designed among those. Which topology should I go for?
3. After inserting the third stage is it required to again compensate the whole circuit? And any other design metric dependent upon both the driver stage and output stage needs to be considered?
4. Any simple design guideline is very much appreciated.
Please help me.
Thanks & regards
Samiran
I need to design an output stage (third stage) for a two-stage compensated opamp. I have gone through some related papers and text. After reading them, I have built-up some interpretations:
1. The main design specifications whilst designing the o/p stage are a) output swing, b) power dissipation (or efficiency), c) linearity (or THD). Please let me know are there anything else I need to consider.
2. My 2stage diff-amp works with 1.8 V - 0 V supply rail. So, the output stage also need to be designed among those. Which topology should I go for?
3. After inserting the third stage is it required to again compensate the whole circuit? And any other design metric dependent upon both the driver stage and output stage needs to be considered?
4. Any simple design guideline is very much appreciated.
Please help me.
Thanks & regards
Samiran