______________ ____
| |____|Iout|
| Iout = I1-I2 | |____|
|______________|
I1 | | I2
VIN _| |_
___|' `|_
_|_ |`-> <-'| |
/_ \ |_________| _|_
|/ \_/| _|_ ///
\___/ / _ \
_|_ \/ \/ IBIAS1
\\\ /\_/\
\___/
_|_
///
Gnd