By Amir M. Sodagar
The classical method of analog circuit research is a frightening prospect to many scholars, requiring tedious enumeration of contributing components and long calculations. such a lot textbooks practice this bulky method of small-signal amplifiers, which turns into much more tough because the variety of parts raises. research of Bipolar and CMOS Amplifiers bargains scholars another that allows quickly and intuitive research and layout: the analysis-by-inspection method.
This functional and student-friendly textual content demonstrates the way to in achieving approximate effects that fall inside of a suitable diversity of accuracy and are in accordance with sound clinical ideas. operating from the fundamentals of amplifiers and transistors to biasing, unmarried- and multistage amplifiers, present resources and mirrors, and research at midband, low, and excessive frequencies, the writer demonstrates the interrelationship among habit in either the time and frequency domain names and balances the dialogue among bipolar and CMOS circuits. each one bankruptcy closes with a suite of simulation examples in SPICE and MATLAB® that supply scholars hands-on event using the techniques and techniques utilizing industry-standard tools.
Building a pragmatic operating wisdom round a pretty good theoretical framework, research of Bipolar and CMOS Amplifiers prepares your scholars to fulfill the demanding situations of quickly and actual approximations and software-based research waiting for them within the office
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Extra info for Analysis of Bipolar and CMOS Amplifiers
4 Circuit symbols for (a) NMOS and (b) PMOS transistor. voltage-controlled devices because it is the voltage applied to the gate that controls the characteristics of the channel and, consequently, the operation of the transistor. MOS transistors are primarily described for the NMOS case in this section, and then the differences between NMOS and PMOS transistors will be studied in the next section. 5. 1) and that the source and the drain currents are equal: iD = iS. 2) Three basic modes** of operation are deﬁned for an NMOS transistor: cutoff, triode, and saturation modes.
5. 1, add a 1-k resistor between the emitter and the ground and recalculate the operating point of the transistor. Solution: By adding the resistor, RE, and replacing the voltage source, VCC, with its simpliﬁed symbol, the circuit of Figure Ex. 2(a) is resulted.
The circuit is illustrated in Figure Ex. 5(b). Simulate the circuit, determine how much the signal is ampliﬁed by each stage, and ﬁnd the overall voltage gain. 1 0 11 20 0 FIGURE EX. 5(a) RS vS + − + vin Ampliﬁer I − (AV, Ri, Ro) + Ampliﬁer II + vout1 (AV, Ri, Ro) − vout1 − RL FIGURE EX. 5(b) Figure Ex. 5(c) depicts the signals at the input and output of both ampliﬁer stages. Peak-to-peak amplitude of the input source signal (vs) is 550 μV. The voltage at the input of the ﬁrst stage (vin) has a peak-to-peak amplitude of 497 μV, which is 90% of the input source signal, indicating the attenuation at the input.