barjaktar
Junior Member level 1
Hello.
I am interested in power consumption of two circuits:
- NAND and
- AND functions.
For the first one (NAND) I measured power consumption by simulating the circuit for 100 cycles and then found avg(abs(i(Vdd))). This average current I multiplied with Vdd and divided the product by 100 to get power consumption per cycle. Basicly, this integral of absolute current over the given time is mean value of current used during 100 cycles. I thought it is obvious to take into account only the current of Vdd.
But, when it comes to the secon circuit, AND - I am not sure what to consider power consumption. Since there is no Vdd, am I to calculate the power drained from Va and Vb? But these voltage points (Va and Vb) are probably outputs of the same kind of circuit from the previous stage, so It confuses me. If it is the case, that power consumption of this circuit is avg(abs(Va + Vb)), should I take this into account in the first circuit, NAND? Should it be overthere avg(abs(Vdd + Va + Vb))?
Or am I totally wrong?
Thank you.
I am interested in power consumption of two circuits:
- NAND and
- AND functions.
For the first one (NAND) I measured power consumption by simulating the circuit for 100 cycles and then found avg(abs(i(Vdd))). This average current I multiplied with Vdd and divided the product by 100 to get power consumption per cycle. Basicly, this integral of absolute current over the given time is mean value of current used during 100 cycles. I thought it is obvious to take into account only the current of Vdd.
But, when it comes to the secon circuit, AND - I am not sure what to consider power consumption. Since there is no Vdd, am I to calculate the power drained from Va and Vb? But these voltage points (Va and Vb) are probably outputs of the same kind of circuit from the previous stage, so It confuses me. If it is the case, that power consumption of this circuit is avg(abs(Va + Vb)), should I take this into account in the first circuit, NAND? Should it be overthere avg(abs(Vdd + Va + Vb))?
Or am I totally wrong?
Thank you.