Patent ID: 7061308

Claim:
A method of dividing a power source voltage comprising the steps of: providing a voltage divider circuit having a first transistor including a first transistor gate electrode having a first transistor gate electrode area and a second transistor including a second transistor gate electrode having a second transistor gate electrode area; applying the power source voltage to said voltage divider circuit; and dividing the power source voltage according to the ratio of said first transistor gate electrode area to said second transistor gate electrode area, wherein said ratio is calculated using the following non-linear function solved by numerical iteration [6.1434×Log( V 2)]+[2.6286×{Log( V 2)} 2 ]+[1.3483×{Log( V 2)} 3 ]+[0.37073×{Log( V 2)} 4 ]+[0.036284×{Log( V 2)} 5 ]+{Log R}−[ 6.1434×Log( V 1)]−[2.6286×{Log( V 1)} 2 ]−[1.3483×{Log( V 1)} 3 ]−[0.37073×{Log( V 1)} 4 ]−[0.036284×{Log( V 1)} 5 ]=0, where V 1 =desired voltage across said first transistor=VDD×VR/(VR+1) V 2 =desired voltage across said second transistor=VDD/(VR+1) VR=V 1 /V 2 VDD=applied power source voltage R=said ratio of said second transistor gate electrode area to said first transistor gate electrode area.