Department of Electrical and Computer Engineering, NSU EEE311L Analog Electronics II Lab 1 E xperiment No: 1 BJT Differential Amplifier Objectives: 1. A differential amplifier is designed to give the difference between two input signals. Department of Electrical and Computer Engineering. This op amp design includes an output stage to lower the output impedance Laboratory Experiment - Differential Amplifier 1. LEAVE THIS CIRCUIT ON YOUR BREADBOARD AS YOU NEED TO USE IT IN NEXT WEEK’S LAB EXPERIMENT. Introduction. ECGR 3156 Electromagnetic and Electronic Devices Laboratory EXPERIMENT 1 – BJT DIFFERENTIAL PAIR AMPLIFIER WITH BJT CURRENT MIRROR 1 UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE. 4. An inverting-amplifier circuit is built by grounding the positive input of the operational amplifier and connecting resistors R1 and R2, called the feedback networks, between the inverting input and the signal source and amplifier output node. It has this name because this circuit amplifies the difference between two input voltages. Introduction In the previous lab, we looked at two different current sources (sinks) and compared their performance. The BJTs that form this differential amplifier require bias currents through their bases. Differential amplifier. In this lab, we will build the differential amplifier and determine Common Mode Rejection Ratio (CMRR) for two types of configurations: one with passive load and the other with an active load. An ideal differential amplifier ignores all common-mode voltage, which is whatever level of voltage common to both inputs. It is basic building in operational amplifiers. Differential Amplifier using Transistor; Differential Amplifier using Op-amp; The circuit diagrams and detailed equations are provided along with the article. INTRODUCTIONTOMICROELECTRONICCIRCUITS! Multistage amplifier- cascade and cascode connection. Compare your calculated and measured results. 3. Bipolar Differential Amplifier ... Assemble the circuit shown on page 1 of this lab experiment. ELG 3136 Lab Experiment #2 Differential Amplifiers . ECG is a bodily electrical signal with typical amplitude of 500 µV and a frequency range of 0.01 to 250 Hz. 650-659 INTRODUCTION In this lab, you will build and analyze a differential amplifier, or "differential pair". Lab Report . The output voltage of the amplifier Bout is given by the following formula: Bout = A (VT – V-) Where A is the open loop voltages gain of the amplifier, which typically is … Experiment 14 - Frequency Response of Differential Amplifiers . Figure 4 +6V -6V 4.7k 4.7k Differential Amplifier is the basic input stage of every op-amp. Lab 7: Differential Amplifiers Objective The goal of this lab is to design and measure the performance characteristics of an emitter coupled differential amplifier. Before p erforming this lab experiment, it is important t o l earn foll owi n g concept s: An opamp is a h igh-g ain different ial amplifier with very hig h This lab is designed to demonstrate the properties of a BJT differential amplifier. Davis Physics 116A Reference: Bobrow, pp. To do so, the three circuits below were built and measured using a custom source-measure unit and then also simulated in LTspice XVII. Instrumentation Lab. Measure the DC voltages on all the nodes and calculate from them all currents in the circuit. LAB 3: BIOPOTENTIALS (ECG, EMG) In this lab, we will “upgrade” the instrumentation amplifier into an ECG amplifier. 5. amplifier is taken single-ended from only one collector) and common mode gains for the new differential amplifier. The circuit is shown below. The lab will cover the following experiments: 1. HO: Large Signal Operation of the BJT Differential Pair The differential pair is a differential amplifier—we express its performance in terms of differential and common-mode gains. EE 3305 Lab I Revised July 18, 2003 Operational Amplifiers Operational amplifiers are high-gain amplifiers with a similar general description typified by the most famous example, the LM741. Frequency response of BJT. The collector and emitter resistors will be It is used to amplify the difference between two signals. 1.0 Objective. This document is a continuation of a previous lab experiment whereby a differential amplifier was designed, built, and characterized. Be sure to limit the amplitude applied at the input to avoid overdriving the differential stage or saturating its output signal CIRCUITS LABORATORY EXPERIMENT 9 Operational Amplifiers 9.1 INTRODUCTION An operational amplifier ("op amp") is a direct-coupled, differential-input, high- gain voltage amplifier, usually packaged in the form of a small integrated circuit. The current is quite small in the 741; the worst-case input bias current in the 741 is 500nA. One way of increasing the input and output impedance of a bipolar differential pair is to degenerate the emitter of Q 1 and Q 2. The dc bias schematic of a BJT differential amplifier is shown below. The 741 contains a differential amplifier input stage. E. XPERIMENT 1 – BJT DIFFERENTIAL PAIR AMPLIFIER WITH BJT CURRENT MIRROR O BJECTIVES In this experiment the students will be … The differential amplifier configuration is very much popular and it is used in variety of analog circuits. On Lab Chip 6 there is a differential pair provided (BJTDPDE) which will allow you to investigate some of the properties of emitter degenerated differential pairs. Experiment 1. R.A. Cortina and R.T. Howe. Lab 8: Differential Amplifier U.C. Lab$4:Instrumentation$ Amplifier$!!! It is primarily a sigh gain differential amplifier which amplifies the difference tot voltages been two inputs. 1. Operational amplifier- part 2. Differential amplifiers are used whenever a desired signal is the difference between two signals, particularly when this difference is masked by common mode noise. Operational amplifier- part 1. Experiment 6 - Operational Amplifier Frequency Response. The student will be introduced to dominant poles analysis of differential pairs. Figure 1 shows the symbol and pin designations of the 741 Op amp. lab 9: differential and instrumentation amplifiers In this lab we will experiment with differential amplifiers and use a so-called `instrumentation amplifier' to measure your heartbeat. The goal of the lab was to characterize and study the differences between three different versions of the differential difference amplifier (DDA). Experiment No 1.3 NON- INVERTING AMPLIFIER Aim: To design and setup a non-inverting amplifier circuit with OPAMP IC 741C for a gain of 11, plot the waveform, observe the phase reversal, measure the gain. Experiment 5 - Differential Amplifier with R E and Current Mirror Biasing. Thus the desired output from our ECG amplifier is a 5V maximum amplitude signal, with a frequency range of 0.5 to 100 Hz. LAB!4:!Instrumentation!Amplifier! Please go through them. Assemble the full circuit ... generator (just as were used the first two lab experiments). AC analysis of JFET. Below figure shows the ideal differential amplifier. Jordan University of Science and Technology Faculty of Engineering Department of Mechanical Engineering Instrumentation and Dynamic Systems Lab Experiment #4 Op-amp: Integrator, Differentiator, and Follower 2. School of Engineering Department of Electrical and Electronic Engineering Analog Electronics Lab Report Student Name: Sanzhar Askaruly Name of Lecturer: Alexander Ruderman Personal Tutor Nazim Mir-Nasiri Astana, 2014 Introduction Operational Amplifier (Op Amp) is a three terminal electronic device which has two inputs of high impedance. UC Berkeley EE 105. Multistage amplifier- current mirror and Darlington. Objectives: After completion of this experiment, student will be able to design and setup a non-inverting amplifier using OP AMP. Use 1% tolerance resistors and make sure that they are as well-matched as you can make them (use your digital ohmmeter if necessary). “classic” BJT amplifier stage is the differential pair. 2. Videos Tutorial . 6. Experiment #4 Report: Op-Amps: Integrator, Differentiator, and Follower 1. A major benefit of using a differential amplifier is to get rid of noise or interference signal present in the input signal. To study the basics of Differential Amplifiers. First Name : Student 1 Student 2 ... For the differential amplifier shown in Figure 2, find g. m, r. ENGR 2420 Lab 9 April 17, 2020 A Current-Mirror Differential Amplifier 9.1 Objectives Inthislab,youwillexaminethevoltagetransfercharacteristics, theoutput-voltageswing, Group Members. The LM741 is used for many amplifier varieties such as Inverting, Non-inverting, differential, voltage follower and summing amplifier. Pre Student ID # -Lab Mark (outof 30) Lab Demo and performance (out of 70) Total Lab Surname ; Mark . 8. ELECTRICAL!ENGINEERING!43/100! The Power and differential amplifier experiment circuit board and lab apparatus training kit is a basic product comprising of numerous transistorized amplifiers like Class A, Class B, Class C and Differential amplifier. The amplifier which amplifies the difference between two input signals is called as Differential amplifier. The front end of every op amp, for example, consists of a differential amplifier. This set up help to find out differential … 2. The standard Differential Amplifier circuit now becomes a differential voltage comparator by “Comparing” one input voltage to the other. In this video, how to use the op-amp as the differential amplifier (Difference amplifier) or as subtractor has been discussed with solved examples. Student Name . Differential Amplifier using Transistor. Lab Procedure, Part B Implement your differential amplifier designed. This two-transistor configuration is at the 4.1.1 DC Measurements. Differential amplifiers are one of the most common building blocks in analog circuit design. This lab will introduce the student to frequency response of differential pairs. Instrumentation!Amplifier! The instrumentation amplifier is a high-gain high-input-impedance high-CMRR differential amplifier. Frequency response of JFET. Create a table to display all the DC 7. For this lab, the same differential amplifier design was utilized as a frontend to a “mini op amp”. Different current sources ( sinks ) and compared their performance poles analysis differential... Circuit on YOUR BREADBOARD as you NEED to USE it in NEXT WEEK ’ S lab experiment whereby a amplifier! Emitter resistors will be able to design and setup a non-inverting amplifier using Op-amp ; worst-case. Them all currents in the input signal be able to design and setup a non-inverting amplifier Transistor. 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