calculate power consumption using the information in the datasheeet

[samsoun]

Hello,

Can any one help me houw can I Find the total power consumption of an electronic circuit.
I used 4 D-flipflop, 4 Gates XNOR, and 1 clock.
I have the Datasheet of each component and I dont know how to calculate it?
Also, I would like to know if I turned off my cicuit, the bits information in the shift register will be memorized or not.

Thanks

 

[treez]

no it will not memorize.
Why not just measure the current flowing to it via a sense resistor and calculate the power like that?...rc filter the signal reading if its not "flat"

 

[samsoun]

Many thanks, but I dont have the components, just I simulate it in circuit maker and I need to know the total power consumption of the circuit.

 

[treez]

look in datasheet where it says the operating current levels

 

[Audioguru]

The Family of logic parts (Cmos, TTL or other) determines its power consumption when it is sitting doing nothing or is switching slowly.
I doubt that a datasheet or a simulation program will tell you the power consumption when it is switching at a high frequency.

 

[ahsan_i_h]

I guess your ics are CMOS. Use CPD (power dissipation capacitance) parameter from datasheet to calculate dynamic power. See AN-90 (74C family characteristics) page 3 section titled POWER CONSUMPTION. Here is the link https://www.fairchildsemi.com/an/AN/AN-90.pdf