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3.3 v decap using 1.8 volt tolerant mos decaps without using MOM (Read 2220 times)
radioelectra
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3.3 v decap using 1.8 volt tolerant mos decaps without using MOM
May 09th, 2016, 5:53am
 
Hi all,

In order to increase the capacitance density instead of using MOM, can we build decap with 1.8 volt tolerant MOS transistor?

The structure will be  pmos transistor three terminals (source, drain, bulk) tied vcco and gate tied to vcco/2 where vcco/2 derived from resistive divider circuit.

What are the issues with above topology
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raja.cedt
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Re: 3.3 v decap using 1.8 volt tolerant mos decaps without using MOM
Reply #1 - May 10th, 2016, 12:31am
 
Yes you can, that's very common as long as leakage doesn't hit your spurs. Didn't get you about why do you need potential divider. generally one side connected to vco and another side go's to Charge pump.


Best Regards,
Raj.
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