Single-power-supply amplifier (a) and laboratory amplifier (b) with = and controlled by DAQ output channels. * Note no resistors or capacitors are present! The power supplies and netlist used in PSpice simulation and numerical calculations are also indicated. From Figure 1(b), the load current is equal to the driver current, i.e.

Lecture13-Small Signal Model-MOSFET 6 Common-Source Amplifiers Small-Signal Equivalent Circuit • Input voltage is applied to the gate terminal • Output signal appears at the drain terminal • Source is common to both input and output signals Thus circuit is termed a Common-Source (C-S) Amplifier.

Note that either end of MOS Common Source Amp Current Source Active Load Common Gate Amp ... Small-signal model for PMOS and for rest of circuit. * This is a common source amplifier. Common-Source Amplifier: •VBIAS, RD and W/L of MOSFET selected to bias transistor in saturation and obtain desired output bias … Q: I don’t understand! 6.012 Spring 2007 Lecture 19 3 2. 46 Unit 5 Common-Source Amplifier Stage Fig. In electronics, a common-source amplifier is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a voltage or transconductance amplifier.The easiest way to tell if a FET is common source, common drain, or common gate is to examine where the signal enters and leaves. * I D stability is not a problem! The common source amplifier circuit is shown in Figure 1(b). 5.1 Basic PMOS common- source amplifiers.

The remaining terminal is what is known as "common". 5/6/2011 The Common Source Amp with current source 1/11 The Common Source Amp with a Current Source Now consider this NMOS amplifier using a current source.

iP = iN The PMOS transistor MP with a constant VGS behaves as a constant current source.