Hello All!
In My Analog IC design class, we are learning about active loads with current mirrors. I want to simulate some of these in Ltspice.
I am first working on a common emitter amplifier. I am having trouble setting the Vbe voltage to 0.7 volts. I read somewhere that you can still use the 4 resistor biasing network to set a base voltage, but the collector resistor can be an active load/current source. This still has 2 resistors tho (if the emitter resistor is a short).
I know that in IC design, it is hard to build resistors onto a chip because they take up space, so I'm wondering if anyone knows any ways that involve an active load to set a base voltage/operating point for a common emitter amplifier? Or is this a case in IC design where you just have to use resistors?
any .asc files would be appreciated!
Thanks