cmos_ajay
Full Member level 2
The attached picture shows a folded cascode amplifier with class AB o/p stage.
* How should I select the W/L of the mosfets MP7, MN5, MP8 and MN6 ?
* Suppose this amplifier architecture has a fully differential o/p.
Assume that only the tail current PMOS source Ib1 , input diff pair devices MP1, MP2 are 5 volt.
The remaining transistors are of 1.8V devices.
Can someone suggest a common mode feedback circuit for such a circuit with 5V and 1.8V devices ? A schematic diagram will be helpful .
* How should I select the W/L of the mosfets MP7, MN5, MP8 and MN6 ?
* Suppose this amplifier architecture has a fully differential o/p.
Assume that only the tail current PMOS source Ib1 , input diff pair devices MP1, MP2 are 5 volt.
The remaining transistors are of 1.8V devices.
Can someone suggest a common mode feedback circuit for such a circuit with 5V and 1.8V devices ? A schematic diagram will be helpful .