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How to use reference voltage from the PTAT output to reset the opamp output?

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lhlbluesky

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i generated a reference voltage Vcm (0.9V) from the output of PTAT,but how to use it to reset the opamp output vout+ and vout- in reset phase of sc-opamp?
i tried many times,but it doesn't work well.
how to drive a resistive laod(such as output of opamp)?
Vcm is generated by resistor divider and opamp (through feedback),the value is exact
in some extent(change little with Vdd and temp).
pls help me.
 

Re: about reset problem

try to use a pass element : a PMOS for exemple
 

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