decrease current consumption in BJT Op Amp

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lucky8

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I know that to reduce input current in for CMOS Op Amp, the designer can increase the resistor value or/and increase the output transistors multipliers.

But, how about reducing the current consumption in BJT Op Amp?
 

Do you worry about current consumption or input current.
For CMOS OP amp input current should be 0.
For bipolar input current has some value. But you can reduce this input current by some circuitry. I met some input current cancelling circuit in Burn-Brown devices.
But what is your question: input current or current consumption?
 

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    lucky8

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sorry, i mean the current consumption.
 

the only way is reduce the mirror's current.using high gain stage .
 

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    lucky8

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